Women’s Pole Vault Final (Berlin 2009)

Advertisements
Women’s Pole Vault Final (Berlin 2009)

“In The Future, All Women Will Be Amazons” From The Smithsonian

In The Future Women Will Be Amazons

This article written Matt Novak explores an newspaper released published in 1950. The name of it was “How Experts Think We Will Live in the Year 2000 A.D.”  and it makes predictions based on thoughts from the editors. Futurology and future studies became popular in the 20th century due to rapid technological and sociological change. When the Associated Press ran this piece, two World Wars had happened, cars, airplanes were in use and computers were gradually developing into what they are today. Futurism and futurology more specifically attempts to postulate possible outcomes , perspectives  or futures. It these academic fields are more related to the social sciences. What this branch of study seeks to do is understand why the world changes and the probability of change. To the futurologist there is a pattern in past and present. This method however has its limits. The problem with prediction is that it almost becomes the equivalent to a person reading tarot cards. Some cases these prediction about human society can be completely wrong. There was a time in which humanity was excited about the future. There was an idea that technology, progress,  and the elimination of conflict would create societal utopia. Some believed that by the 21st century humanity would have mastered interstellar travel and cured most diseases. This has not happened. While humankind has reached the moon, there are still the some sociological problems plaguing the world. There has been some advancement in terms of human rights, public health, and the availability of education. War, poverty, and racism threaten human advancement. When discussing the state of women there is a fluctuation. Dorothy Roe one of the editors of the article, described what the typical woman would be like in the year 2000. Her prediction about women entering the world of business and government has occurred. Roe states that the average woman will be six feet tall, wear a size 11 shoe, and have muscles like a truck driver.” It is now the year 2017 and the average woman does not have the muscles of truck driver or is above six feet tall. There are obviously stronger and faster women athletes who fit this description. Her futurist prediction was partly off, yet not entirely wrong. Examining this futurist prediction from a sociological, anatomical, biological, and physiological method could have provided a more precise picture.

      Women have been in some instances in a  subordinate role through out human history. This however was not always the case. Before the rise of long lasting human civilization hunter gatherer societies in some respects were more equal. The rise of agriculture, land ownership, and property created the inequality that is present in modern society. Men had access to more property and land. Simultaneously, women were denied education, equal rights, or full employment. This did not mean women simply accepted oppression. Before feminism, there were female leaders, scientists, and mover’s of history. The tragic element was that historians did not think enough of women to include their narratives. Thankfully, women’s history seeks to reverse this mistake. Historical figures such as Hatshetpsut, Nzinga, Queen Elizabeth I, and Joan of Arc are notable women who had risen to prominence in male dominated societies.

The news piece states the amazon of the future “may even be president.” The way in which that though was expressed made it seem as if a female leader was a new concept. The futurist prediction only examines that world through an American perspective. Other countries have female leaders, but at that time it was far less. Now it has increased across the world. Some female leaders have left their mark on history for good or bad, but have shown they have mastered the art of politics. The United States has not yet elected a female president, despite its rhetoric of supporting women’s rights. Although Hillary Clinton lost, it encouraged more women to run for political office. Women have even been leaders in countries, which do not value them as citizens or protect their rights. Benazir Bhutto and Indira Gandhi  governed nations in which had an ultraconservative view of women’s roles. Benazir  Bhutto was the first female leader of a majority Muslim nation, while Indira Gandhi was the first female Prime Minister of India. The US still lags behind compared with the UK which has had two Prime Ministers to date which included Margaret Thatcher and currently Theresa May. The irony is that their policies are not in alignment with women’s rights or causes. Ellen Sirlef  of Liberia and Tsai Ing Wen of Taiwan represent a new female leader of the 21st century. They vary in political ideology, do not refer to themselves as feminists, and are tactical.

One cannot not say women are not capable politicians. Largely a culture of misogyny has kept women out of politics. There have been biological explanations for why men have domination of society. These theories normally just are designed to justify sexist convictions. History disproves this, because women have been involved in science, politics, warfare, and the building of civilization. The gender gap is still present even when women make progress. The world of business and finance is a place where women have reached a glass ceiling. Discrimination, unequal pay, and sexual harassment are the sociological reasons why women may not advance in certain fields. Even under these unfavorable conditions women are present in occupations that were thought to be male only. Law enforcement, firefighting, the military, construction,  and sports are physically demanding occupations. Due to differences in physiological and fitness capacity women would remain small in number in these occupations. However, despite such obstacles women have become part of these professions. While sociological factors are relevant, biological factors cannot be ignored entirely.

If a society has less technology a majority of jobs would be manual labor based. This could theoretically exclude many women, beside the obvious prejudice. The rise of the industrial revolution saw the replacement of brawn power with machine power. This should have benefited women the most, but cultural mores and gender roles prevented it. Women were regulated to the domestic sphere excluded from public life and participation in it. The working classes had women in menial occupations, with even less independence. Women’s status and roles have fluctuated through out history. There were periods in which they had some freedom and as time passed society degenerated. Ancient Egyptian civilization allowed women to own property and have some legal rights to it. They were not burdened by male guardianship and navigate freely, which Greek historian Herodotus called unnatural. As monotheistic religion emerged, women’s status was then lowered. Christianity, Judaism, and Islam demanded that women have a subordinate role in their religious texts and belief system. Women were regulated to property and not people. The rise of the suffrage movement in the 19th century evolved in the feminist movement of the 20th century. Women then gradually regained their status as free people, while facing  backlash to change. The sudden change in women’s status is part of a consistent pattern in human history. There may come a time in which women create large corporations and companies of their own. Society and civilization is never static it is always evolving.

        The article predicts that the average woman in the year 2000 will have proportions that are perfect though amazonian, because “science will have perfected a  balanced  ration of vitamins, minerals, and proteins that will produce the maximum bodily efficiency and a minimum of fat. ” Dorthy Roe then says “she will compete in all types of sports- probably compete with men athletes in football, baseball, wrestling  and prize fighting.” There is no denying that women in sports and athletics have become very strong, but competing with men on average seems to be inaccurate.

Women now compete in most sports, however there are no organized teams for baseball. Women have teams for softball, but there remains work to be done in some areas. Women do have organized football teams, yet they do not have the coverage comparative to the NFL. The strength sports thought to be out of women’s physiological capabilities, are active in. Mixed martial arts, bodybuilding, weightlifting, track and field are areas in which women are showing their talents. Women’s participation in sport has increased, yet mixed competition has not occurred. The reason is anatomical. There exists an athletic performance gap between the sexes due to anatomical factors. Men on average have broader shoulders and more upper body strength. Generally men grow taller than women. While the muscular and skeletal cells are the same their structure changes athletic outcomes. Denser bones and larger muscle fibers mean males would have more absolute strength. The smaller hearts and lungs of women mean that their aerobic capacity would be lower. The major organ systems that contribute to athletic performance include the respiratory system, cardiovascular system, the nervous system, endocrine system, and the musculoskeletal  system. Movement is not just dependent on muscle, but the impulses of the nervous system. The hormones produced by the endocrine system do influence athletic performance. Testosterone allows for greater muscular hypertrophy. Women with lighter bones and smaller muscle mass in comparison means they are more susceptible to injury the more intense the physical competition. There is a point in which absolute strength levels are equal. Prior to puberty boys and girls do not differ in physical strength. Girls may experience thier growth spurt earlier compared to boys. When gondadotropin releasing hormone is produced by the pituitary gland it then signals the production of lutienizing  and follicle producing hormone. Thus begins the production of sex hormones and growth hormone. Estrogen makes the female body retain more fat. Even the most muscular woman and the thinnest woman still retain a higher fat percentage compared to a man of a similar physical fitness level.

Tendons and ligaments are also contributors to body strength. Women’s tendons may not respond the same way to training, but their looser joints make them more flexible. This means women would dominate gymnastics and figure skating even if their was mixed competition. A wider pelvis and lower aerobic capacity means that women would struggle to keep up with male speeds. Contrary to popular belief women do not have stronger legs than men, but are relative closer in strength in that area. However, despite these differences, women can still acquire physical strength through training. Genetics do play a role giving women of a mesomorphic body type more of an advantage. The average woman has not morphed into an amazon quite yet, but there is a group that could fall into Roe’s description. While nutrition has improved, there is the problem of abundance. Foods high in sugar, fats, and high fructose corn syrup have created a problem with obesity and weight related diseases. Women are particularly effected more by this, considering it is more of a challenge for them to lose weight. The modern age has produce a very sedentary lifestyle, with limited physical activity. As a result heart disease, diabetes, and weight management issues have increased. This has not only happened in the United States, but is spreading across the globe. A low vegetable, fruit, and protein diet can result in poor health. It seems if this is not addressed the average woman and man will look similar to blobs. This can be reversed through diet, exercise, and honest nutrition labeling. Roe’s other prediction seems to have realized the effectiveness of supplements for athletes. Women can benefit as much as men from the use of vitamins and supplements. This has become a lucrative industry and has greatly benefited athletes and the general public. Recent investigations into the importance of vitamin D and it is now believed it is essential to muscular and skeletal function.

The women who are involved in athletic competition, not only have to focus on training but maintain a strict diet. This requires a good knowledge base of of nutrition. From the early 20th century to present exercise physiologists have figured out the role of nutrition in athletic performance. Understanding that women’s metabolism functions differently has led to the structuring of  more efficient training programs. Women still must eat to feed growing muscle,but is should be understood that more of that food could be metabolized into fat. That is why activity level should be adjusted to compensate for the endocrinological function. Even though women have proven to be great athletes, male performances levels are still higher. This extends beyond anatomy, but to biology.

          The difference in physical fitness capacity is rooted in biology, through human evolution. Sexual dimorphism is the reason why on average men are stronger. Most primates demonstrate a degree of sexual dimorphism. These are attributes that are secondary sex characteristics, which exclude the reproductive system. During the course of human evolution the size and strength difference may have been a natural selection tool. Male authralopiths most likely fought each other for access to mates. Larger size and strength would have given an edge to the hominin who wanted to spread his genes. The females did not have to fight, so therefore it was easier to just pick a victor in a struggle. While it is hard to test this theory, it can be seen in mating strategies of modern primates. Gorillas function with a male who heads a harem of females. When another gorilla challenges him he will fight to maintain dominance. So, over time the strength and size genes continued to be propagated in the primates species. A changes in environment can influence evolution. When our early ancestors got access to more protein based diets, endocranial  volume increased. Between six and two million years ago brain size increased. Around 17,000 years ago homo sapiens became the only survivor on the evolutionary tree. Evolution was not a linear progression, but a series of branches that came from divergence.

human-evolution-family-tree-with-skulls-graphic-hero

Humanity occupies the homo branch, with the other species becoming extinct. Relevant to the future woman is it possible that given the right conditions that average woman can become stronger? Evolution has the power to change the body structure of organisms so it would seem like a possibility. During the process of human evolution the body went from being heavily built to adapt to colder climates ( 400,000 years ago) to a lighter body ( 50,000 to 20,000 years ago ). Internally the intestines became shorter to accommodate an omnivorous diet. Assuming what is known about human evolution is correct, theoretically it could take millions of years for women to change their physiology. This certainly could not be witness in our current lifetime. Still with a sudden change it will also effect men as well. The article predicted that women’s height would increase. If women changed it would men could see an increase in height as well due to the genetic attributes of sexual dimorphism.

If men already have the genetic trait for more  height, it is likely it would not disappear because natural selection has favored it. Only when it is no longer favored will it disappear. It should also be understood  many elements of a species can be adaptable. There are women who are stronger than men and taller. They are not the average, but have inherited traits that have been passed down generations. The reason that certain species survive is that they have a variation in genetic information, can acclimate to various environments, and pass on genes through offspring to ensure survival. The phrase “survival of the fittest ” is not a correct description. By all standards homo neanderthalensis should have survived based on the fact it was physically stronger. They survived a colder climate. but died out after 30,000 years ago. They could not adapt to the changing environment. Homo sapiens did mainly due to their increased reasoning skills. Nature favored brains over brawn and humanity began to spread through out the Earth, except Antarctica. Sexual dimorphism continues to be a physical trait that proves human evolution. Humanity and other organisms continue to evolve depending on the condition of their environment. Humanity has acquire such a vast knowledge of science it will be possible to manipulate our own biology. This could be done through genetic engineering, surgery, and technology itself.

            There are physiological difference that exist that products of sexual dimorphism. Men have more type II muscle fibers, while women have more type I. Muscular contraction is essential for movement or any athletic performance. Muscular endurance describes how long the muscular contraction can last. Men  and women can have similar levels of muscular endurance. Women may have more, because they fatigue slower. When comparing men and women of a similar size men would still have more upper body strength. When the size is held constant it is estimated that women could be at least 80% as strong. The remaining percentage points account for the upper body disparity.  Cardiovascular physiology  plays a role in oxygen transport. During exercise oxygen is transported to the muscles to form adenosine triphosphate. This then provides energy for muscular contraction. Hemoglobin housed within red blood cells has to transport oxygen from the lungs to other tissues of the body. Larger lungs and hearts contribute to men’s 50% greater aerobic power. Women however may have an easier time converting glycogen into energy, which aids in endurance. Women’s higher fat levels are useful in long distance swimming and running, because it can aids in metabolism. Estrogen-B could also be responsible for fatigue resistance during muscular contraction in women. A combination of biological, anatomical, and physiological factors explain the gap in athletic performance. There can also be overlap, but this is explained by unique physiology of particular individuals.

Women's growth

Tall
Women have grown taller, but the average height is not six feet tall. 

Dorthy Roe’s prediction make the mistake of not taking into account particular factors. If this were to be average as she claimed it would mean that every woman would have to have the same nutrition and access to certain opportunities. Then genetics plays a role in the possible maximum physical potential. Then it also has to do with choice. How many women would actually want to achieve that level strength? The hilarious aspect of this prediction was the statement “muscles of a truck driver.” Driving a truck requires little physical strength. The job is mostly sedentary and therefore would not be the best for your health. Sitting too long for extended periods of time has been linked to heart related and weight issues. The question remains why are there not more women truck drivers? Again, discrimination is an obvious answer, but personal choice is another. Job seekers will only go to jobs that could benefit them the most economically. Companies may just not try to recruit women, even if they have positions opened. Despite this, there are women who are involved in trucking.

The only difference is that the truck has to be ergonomically designed to suit the female driver. All trucks have to in order to make the seat comfortable for the driver. Driving long periods of time in one particular position could cause back and neck issues. Part of the problem is that people still think their are men’s jobs and women’s jobs in the workforce. This dated concept not only harms women, but could be hindering economic growth. A functional economy must have a low unemployment rate to keep consumption up. Women must be part of the workforce to maintain economic stability. There are some occupations in which women’s numbers may still remain smaller relative to men’s due to differences in maximum physiological capacity. This does not mean there will not be any women in those positions. There are women who, even with the noted sex differences can outperform many men.

The female athlete will be in better shape or either just as strong or stronger than the average man depending on which training regimen is used. So, in this sense the prediction was only a part truth. A group of women have become stronger physically across the world who compete in both local and  international sports competition. The total number of women on Earth have not become physically stronger. Health has improved as indicated by women’s increased life expectancy . Women have the edge in terms of durational strength, living longer in most cases. The wonderful element about humanity is that it is diverse and can be flexible with its environments.

There can be strong women who are short. Tall women who are not the strongest or women of average build. The same can also be with men as well. The genetic variation protects the human species from genetically inherited diseases. That diversity helps, but has not completely eliminated such ailments. The article does not say that the average woman will become physiologically similar to a man, just that she will reach at higher fitness level. The implication that women will be able to compete en mass with men in mixed competition does not seem probable. However, there is a possibility that individual elite female athletes could beat an elite male athlete. There it would be presumptuous to say that it could never happen. It is just at the moment is not happening in the future Dorthy Roe predicted. A hypothesis should not be a mere prediction, but thoughtful estimation of probable outcomes.

Women still have to work harder to attain a high level of physical fitness. While their are women who have more natural strength than others, they are a unique exception. More training just enhances their physical potential. There is a new phenomenon. Women are now competing in sports at larger numbers compared to the past. Women’s involvement in sports dates back to the ancient world being documented in Greek and Egyptian civilization. There has never been a period in history to date in which women have embrace sports and physical fitness to this extent. Not only that, but women are seeking to build as much muscle and strength for their particular sports. While their is traditional backlash and divide in public opinion there is a portion of people who are embracing this change. The physiques that women display across various sports would be inconceivable  to many 200 years ago. Some women it seems have become the amazons of the future.

       It is clear that women have enter areas that sole were male domains. The change in women’s status is spreading not just in the West, but in the Global South. Status and progress in a society depends on the historical, sociological, and political situation. There is a possibility that civilization could collapse from mass global warfare, dramatic climate change, pandemics, or economic instability. Such events would mean the reversal of progress and even the end of humanity itself. When the fabric of society is unstable women and other marginalized groups suffer the most. Women could lose the little rights and opportunities they have if there were a change in political regime. Active organizing and vigilance can prevent such occurrences. A faction of futurist believe that in the coming years the world will become a better place. Like the utopian science fiction of the early 20th century, it seems out of reach. Both World Wars and the following Cold War proved that The Jetsons like future seems more imaginary. There is more advanced technology, but with it comes other problems. Roe’s predictions fall into the more utopia version of futurism. Her predictions would not seem so outrageous if she did not say that the average woman would be an amazon in terms of physique. As for height, women have not on average reached the six foot range. The tallest women in the world live in Latvia and the Netherlands. When Roe was writing this, she was only thinking about America.

Height chart

The US does not place in the current record of tallest men and women. This does not mean we do not have our own tall people. It should be no surprise that experts writing this in 1950 were off. They did not have a vast body of knowledge to base predictions on and human evolution was still though of as a linear progression rather than a series of branches coming from a root. The more precise assessment that could have been stated is that women of the future would greatly enhance their physical fitness capacity. Title IX was and continues to be an important law that allowed for many American women to become active in sports. Those women who first benefited from it went on to be top performing Olympic athletes and  the law still continues to make this possible. That is an example of how when barriers are removed  the numbers increased. Then another development happened that was not just in the US, but seems to be spreading around the world. Women who are enthusiastic about weightlifting are becoming serious competitors. It was not until the year 2000 that women’s weightlifting was added to the Olympic Games. Maybe the prediction of Roe’s amazons was not entirely incorrect.

Prior to women’s weightlifting, women had worked out with weights. This was mainly in bodybuilding, which had its origins in the 1970s. The early pioneers of women’s strength sports worked out with weight even when the gyms tried to prevent them from going to such sections and faced harsh ostracism. Now, it does not seem so abnormal to see even the average woman doing some weight training. Their intent may not be to be a professional athlete, but to simply maintain and control body weight. Women are no longer afraid to show physical strength or actual muscular development. Dorothy Roe may have predicted accurately what the average female athlete would be like. The average woman could vary between ectomorphic, endomorphic, and mesomorphic body structure. Height as well will vary as seen from sets of data. The conclusion would thus have to be modified. The average woman will be participating in various fields in the future. Improved health, physical activity, and nutrition will mean some women will reach physiological capacities greater than previously thought. Technology although helpful may cause adverse health effects that lead to a sedentary life style. The tendency for futurologists to be sensationalist leads to imprecise conclusions. To make precise assessments, one most take a rational method of analysis.

“In The Future, All Women Will Be Amazons” From The Smithsonian

A General Introduction To The Muscular System

The muscular system is responsible for movement in collaboration with the nervous system to form impulses for motion. Muscles also contribute to internal functions of the human body which include motion in the intestines and circulatory system. Exercise of this organ system is critical to prevent wasting from age or the possibility of disease. Muscles are placed under the body’s skin sorted in overlapping layers on the skeletal system. All muscle is not the same and be placed into three different types. This includes smooth, skeletal, and cardiac muscle. The human body can contain up to a range of 640 to 650 voluntary muscles. Like other organ systems of the human body, it functions almost like a machine. Various parts and structures perform a role to produce an output.The human body is capable of complex movements due to various organ systems . The muscular system also serves an essential role in athletic performance.

         All muscle is not the same. There are three major muscle tissue types responsible for various functions. The muscles that are the most recognizable are the skeletal muscles. These are connected to bone and produce movement. These muscles can sometimes be referred to as voluntary muscles. Under the microscope they appear striated. Skeletal muscle contains multiple cell nuclei located around the periphery of the cell. Not all skeletal muscle is under voluntary control. The chest wall of the body is automatic to allow for breathing.

Skeletal muscle
Skeletal Muscle ( microscopic image)

Smooth muscle often referred to as non-voluntary is responsible for actions of the nervous system. An example of this would be the dilating and constriction of arteries or movement in the stomach. These actions require automatic response to assist other organ systems. The smooth muscle cells have spindle like shapes. Narrow at a point to both ends attaching to one nucleus in the cells center.

Smooth_muscle_tissue
Smooth Muscle (microscopic image)

Cardiac muscle is the most essential. The responsibility of this tissue is to transmit electric messages fast and in the most efficient manner. Heart muscle is designed to be branched out. The heart needs this type of muscle tissue to ensure it beats correctly. Cardiac muscle can have two or more nuclei at the center of each cell. This demonstrates that organ systems do not work in isolation, but in a coordinated effort.

Cardiac muscle

Muscle cells are the smallest units of the muscular system. Together they form part of the human body mass. Muscle can account for close to 50% of total body mass. This depends on the physical fitness level of the individual and the amount of fat that is also stored in the body. There is a difference in muscle mass between men and women. Men’s muscle fibers are slightly larger in size. Women have higher body fat levels which can range on average 11%, which is higher than men’s range. At the cellular level, there is no difference between male and female muscle.

      Muscles can have a superficial layer and others are deep with in the body. The names of muscles do correspond to their shape. The trapezius obviously takes its name from trapezoid. The muscle that rotates the shoulder blade has that distinct shape. The human body contains many muscles from the face down to the lower body.

Muscle anatomy

Muscular anatomy 2

Each muscle moves are particular part of the body. The muscles of the arm include the deltoid, biceps brachii, triceps, flexor carpi radialis, and barchiordalis. The biceps brachii flexes the forearm at the elbow and can pull the palm upward. The deltoid is capable of moving the away from the body to the front, side. or rear. The triceps have a medial head which covers the forearm at the elbow and can straighten it. There is also a long head of the triceps that allows for straightening of the the forearm. The brachialis brings the forearm to the shoulder. The arm when flexed at the elbow happens due to movement by the brachiordalis. When the hand is flexed at the wrist it is done by the flexor carpi  radialis.

The trunk of the body aids in the movement of the neck and other limbs branching out from the human body. The pectoralis major moves the shoulder blade. The internal intercostal pulls adjacent ribs together while the external intercostal elevates them. The scalenus has to maintain proper assistance in breathing and  the flexing of the neck. The rectus admoninius  flexes the spinal cord, while directing the pelvis forward. The linea  alba separates divides the abdominal muscles .The serratus anterior has to pull shoulder blades away from the spine. Despite its long name the sternocledomastoid only serves the function of tilting and moving parts of the neck.

There are also muscles of the back. It should be noted that while muscles are named in accordance with shape, sometimes names come from the bones they are connected with. The illocostalis runs from the one back muscle to the ribs reaching ilium. The tres major and minor contribute to lifting the arm and stabilizing the shoulder. The infraspinatus allows for rotation of the arm the stabilization of the shoulder joint. The supraspinatus can raise the arm when needed. The rhomboideus major and minor are designed to retract the shoulder blade and return it to a rest position. For the spine to be straightened it require the use of the erector spinae. This muscle is made of three other muscles, which include the spinalis, longissimus, and  illocostalis. The latissimus dorsi rotates arms and pulls shoulders back. It has the largest surface area of any muscle in the human body.  the obliques assist in breathing and abdominal wall stabilization. Internal obliques must focus on pressure inside the abdomen. Obliques both internal and external have the ability to flex and rotate the trunk.

Continuing further there are muscles of the lower body and legs. When humans became bipedal during the course of evolution, this was a major milestone. Humankind is the only primate species that can walk upright. The hamstring consists of three muscles which include the biceps femoris ( rotates the leg ), semitendinosus ( extends thigh, hip and flexes the knee), and semimembranosus (extends thigh, rotates leg and flexes the knee). The hips get stabilization from the quadratus femoris. The muscle also allows for rotation. The gluteus maximus has to straighten the hip by pulling the thighs back in the event of running, walking or jumping. The muscle is not alone in the locomotion process; the soleus has to flex the foot when walking happens. The gastrocnemius which is a calf muscle must contract to flex the ankle and pull the heel up. This is done when standing on a tip-toe position. There is a muscle that also gives the leg thrust when walking called the flexor hallucis longus. The toes and foot itself need control and that function falls on the flexor digitorum longus. The knee also has more assistance with movement with the popliteus. The adductor brevis  rotates thighs in toward the body, while the adductor longus draws into the body. Gracilis also flexes and rotates that leg as needed. There are also muscles in your face which aid in expressions you make. Whether it is a smile or grimace muscle once again work together.

The muscles of the face can be either attached to bone or connective tissues known as aponeuroses. The presence of this fibrous and sheet structured tissue means that facial muscles are connected to one another. The muscles of the head and neck interact to produce facial expressions, which can vary depending on emotional state. The facial muscles are controlled by a nerve known as cranial VII. If damage is inflicted on this nerve facial mobility would be lost, making it difficult to communicate. The structures such as the occipitofrontalis raise the eye brows and zygomaticus major pulls the corner of the mouth up and out. The sternohyoid depresses the larynx, while the platysma  lowers the mandible and covers the mouth. The muscles of the face and neck are critical for speech and even a function as simple as chewing. Facial muscles can fill the role as sphincters ( such as the orbicularis oculi  that allows your eyes to close). The function of sphincter is to open and close a particular orifice. Besides basic functions of eating, talking, or drinking the head must be balanced on the body. The average adult head weights about 5kg ( 11 lbs). Muscles of the neck , back and shoulders must act as a stabilizing force. They are active in a constant fashion tensing and contracting based on particular movements.

The rectus capitis posterior( minor and major) ,  oblique (inferior and superior) , levator scapulae, semispinalis captis and splenius captis are needed for balance of the head on the body. When moving the face and the neck it is hard to image such labor has to be put in to make a simple action possible. Chewing requires the force of the masseter muscle. Without it the mouth could not close the mandible when eating. This is only a general delineation of the structure of the muscular system. While the estimate of skeletal muscles is placed at 650, more could be classified as such. This depends on if a muscle is classified individually or part of a much larger skeletal muscle.

         Skeletal muscle tends to be the majority of the muscular system, when compared to cardiac and smooth muscle. Skeletal muscles have extra classification based on their unique shape. The two bellied parallel muscle contains two separate muscles separated by an intersection of sinew. Three headed parallel muscle is designed to attached to three different places. The quadrate muscle forma a flat four sided shape, which acts more like protective covering.  The straight muscles run parallel converging at a tendon point. Orbiculars are muscles that function like  sphincters and triangular muscles form a fan shape. The reason for this is to allow for the maximum force of contraction. These muscle also have a common site of attachment. Two headed parallel muscle splits at a point nearest to the body. Flat muscles serve mostly as a covering. The abdominal wall would be considered a flat muscle. Fusiform muscles have fibers that are positioned parallel to each other in the middle then meet to form a tendon at one or two ends. These muscles are responsible for moving the fingers, specifically the flexor pollicus longus. The last type of skeletal muscle is the pennate muscles. They contain strong muscle fibers, but fatigue quickly. They have a feather like appearance.

      The physiology of the muscular system is just as impressive as its numerous structures. The skeletal muscle is connected to tendons, which means they can only pull when contracting. During this process they shorten. Muscle in a controlled setting can achieve a threshold stimuli and can respond to the next stimulus without relaxing completely. Tetanus happens when full sustained contraction is achieved. The tetanic contraction happens when muscles are actively used. Even when there is no active motion muscles still exhibit tone. Muscle tone refers to fibers still contracting while at rest. if this did not happen during rest the body could collapse around the neck, trunk, and legs.

Muscle tone is the key to maintaining good posture. The muscle fibers are packed into bundles. The muscle fiber cell has various components. There is a plasma membrane known as the sarcolemma, which forms a transverse system. The T tubules move down into the cell making contact with the sarcoplasmic reticulum. There are storage sites present for calcium. The sarcoplasmic reticulum is home to thousands of myofibrilis which are contractile muscle fiber tissue. The myofibril has sarcomeres which are contractile units. The myofibrils are cylinder shaped and can be as long as the muscle fiber. On the tissue itself are striations, which are formed by the sarcomeres. When in a state of rest dark lines known as Z lines. What should be understood is that the muscle fiber functions on different protein filaments. Actin filaments slide past myosin, which induces contraction. Myosin pulls the actin through cross bridges including split ATP. The process can be described as the sliding filament model.

1022_Muscle_Fibers_small

P49xp
Adenosine Triphosphate  (ATP)

The sarcomeres shortens causing the actin filaments to slide past the myosin filaments. The I band will shorten and the H zone disappears. This is how muscle contractions behaves. Like two people doing a short of tug of war, this shows how the filaments move. Besides ATP, myoglobin stores oxygen and phosphocreatine helps with energy needs. Phosphocreatine does not directly get involved in muscle contraction, but has the ability to anaerobically regenerate ATP.  This helps supply enough energy for muscular contraction. Once the phosphocreatine is depleted the mitochondria can produce enough ATP for muscular contraction to proceed. Another method for supplying energy is fermentation. This does not require oxygen, but can happen during strenuous exercise. ATP can only be supplied for a short period. Lactate then amasses and there will be fatigue. Lactate may not cause muscles to ache, but rather act as a protective measure to prevent harm to the muscle.

This explains why at some point when exercising intensely muscles will fatigue. Breathing patterns even change during long term intense exercise. The oxygen debt has to be restored. This means cells must return to their original energy state. The intake of oxygen must complete the metabolic process for lactate. The lactate must be transported to the liver, where it will be broken down into carbon dioxide and water ( 20% ) . There will be ATP gained from respiration, in which 80% of the lactate will be converted into glucose. People who consistently train ( athletes for example ) the number of mitochondria increases which decreases reliance on fermentation. As a result ATP is produced more efficiently and there is less of both lactate and oxygen debt.

        While there is very little difference in structure and function of the muscular system between the sexes, there is one aspect that effects athletic performance. Men have more type II muscle fibers. Fast twitch muscle fibers generate more power, but fatigue at a faster rate. They are not oxygen dependent. Women have more type I muscle fibers which are more resistant to fatigue and can contract for longer periods. The slow twitch fibers get their energy for contraction  from the break down fat from blood, muscle cells, and adipose tissue. This explains why women have more of these muscle fibers, because estrogen means women will have higher body fat percentages. Fat breakdown needs only oxygen and some glycogen . Fast twitch requires phosphocreatine and glycogen reserves in the muscle itself. Glucose remains stored in the blood and glycogen in the liver. Sex is not the only factor in muscle fiber composition. It can be based on either genetics or physical fitness training. Marathon runners would have more type I muscle fibers, compared to the type II weightlifters. The difference in physical strength is not just due to the size of the muscle fiber, but endocrinology. Men produce higher levels of testosterone which allows for a greater amount of muscular hypertrophy. This explains why a man and a woman who do the exact same training regimen, it is more likely the man will have more absolute strength.

It is not just the difference in size of the muscles or endocrinology. The difference in absolute strength comes also from the nervous system. Men’s nervous system signals faster when muscle contraction is occurring. The common misconception is that women would not benefit from weight lifting because they have smaller muscles. Women’s muscles still can experience hypertrophy. The difference appears to be mostly in quantity, rather than quality of the muscular structure. Then one must considered starting point. If men have lower body fat levels and more muscle mass to begin with their total strength would be higher. Women would gain more relative to their size, seeing as their natural strength levels are lower. People with mesomorphic body types will have a natural advantage when engaging in a train regimen. The female body is capable of developing strength. The muscular system is almost like a multilayered puppet with tendons and muscles working in collaboration. This organ system is pivotal to athletic performance and overall health.

 References

Mader, Sylvia. Biology. New York : McGraw-Hill, 2007.

Parker, Steve. The Human Body Book. New York: DK Publishing, 2013.

Brewer, Sarah. The Human Body: A Visual Guide to Anatomy. London: Quercus, 2012.

 

A General Introduction To The Muscular System

Saudi Arabia Approves Physical Education Program in Girls’ Schools

Girls’ Physical Education in Saudi Arabia

According to Arab News,  the kingdom of Saudi Arabia’s Ministry of Education has approved a program allowing physical education to be taught in girls’ schools. This is more significant than some observers realize. The deeply religious and conservative Middle Eastern nation does not not favor women’s rights or their independence. However, there is a movement for change. The kingdom wants to modernize and that means having women be a part of the larger society and public sphere. The implementation will occur during the 2017 and 2018 school year. Saudi women will no longer accept a second class status or remain under antiquated guardianship. An even bigger incentive is to mobilize women in the workforce and other sectors. This starts with the youth and creating new opportunities. Vision 2030 seeks to enhance the Saudi kingdom economically, politically, and socially. This change is policy is part of that program to ensure the country is not left behind in the 21st century. Sporting activities are being encouraged across the kingdom. This is part of the Vision 2030 program and women will gain the most  from it. The focus on sports clearly has an intention on building high performing Olympic teams. It would not be surprising to see the girls who benefit from this program becoming Olympic athletes in the future. Like Title IX in the United States it will be beneficial both in terms of public health and women’s empowerment.

        The minister of education Amed Al-Issa  issued the decree for schools in the Kingdom of Saudi Arabia for girls’ physical education. A supervisory committee will be established under the supervision Haya Bint Abdul Aziz Al-Awwad, undersecretary of education for girls.  This program will target both public schools and universities. Three months of intense policy study Saudi officials thought this was the correct time for educational reform. Change will not be immediate. It may be decades before the new policy shows positive results. Discrimination and gender bias cannot be erased by a mere stroke of a pen. There will of course be individuals who object to any form of change. Others are more open mined and fitness trainers seem more enthusiastic about the decree. It is not secret that some girls have been given private lessons in tennis and soccer before the royal decree. Now girls can have schools provide facilities to develop athletic skills. There are less liberal voices as demonstrated by Mohammud M.S :” I don’t think it’s right for a young girl to take a sports class in school, she will grow harsh and rough, which goes against her delicate nature.” He expounds further: “I won’t deny my daughter’s participation in any (physical education) related activities in school but I will draw a line somewhere.” It seems Saudi men who were raised in a religiously conservative society reject the idea of a strong woman. However, others realize  that change cannot be stopped  yet sill wrestle with the idea of  traditional gender roles. This change should be welcome for the sake of the kingdom’s image.

          Western images and ideas about Saudi Arabia either are stereotypical, racist, or Islamophobic. As a way to disparage an entire race, some point to Saudi Arabia’s treatment of women. Commentators say “they are not part of the civilized world”  or use it to elevate Western values as being superior. The truth is like any other country,Saudi Arabia has its problems, but it is seeing women become more powerful. Over the past decade it has happened rapidly. During the Rio 2016 Olympics Saudi Arabia sent four women athletes to compete. Although it was only four athletes the image was important. Prior to that Sarah Attar and Wojdan Shaherkani made history as the first women to compete in the modern Olympic games in 2012.

download (4)

These young women were met with harsh criticism at home by religious fundamentalists and extreme traditionalists. These negative reactions inside the kingdom only validate Western prejudices and misconceptions. If one truly loves their nation they should seek to see all members be successful, especially in an international setting. Doing so will dispel the anti-Arab and anti-Muslim sentiment so prevalent in mainstream Western media. Many objects to women’s participation in sport come from a religious context. The Quran does not ban or prohibit women from participating in sports. To make the claim it makes women into bad Muslims has not factual support. Religion should not be regressive, but progressive. Islam has a tradition of impressive civilizations which include the Abbasid Caliphate, Umayyad Caliphate, Songhai Empire, Mali Empire, Sokoto Caliphate, and the Ottoman Empire. That tradition must be revitalized in elevation of people and society. Women are the key to saving the kingdom from turmoil. Sports are not the only sector women are flexing their muscles; they are making their mark on government.

abebbb8breema

Princess Reema  was appointed in 2016 to oversee the women’s sports sector. She works in the General Authority for Sports and it is pivotal that women have leadership positions. Normally, a Western view of a Saudi woman is that of a weak and oppressed creature sheltered from the outside world. Contrary to misconceptions women are challenging old customs. Around 2014 schools Saudi state schools introduced sports for girls after vocal opposition to a general ban on women in sports. The move was incomplete without physical education for all girls. Gradually, the kingdom is introducing reform. Yet, they do not go far enough. The fear of the House of Saud  is that reform in other areas may mean mass political reform or possible revolution. The Arab Spring has increased this paranoia. The trepidation of regime change may halt reforms, which could prevent such events from occurring. The addition of physical education to girls’ education is a great step in promoting social health and stability to the Kingdom of Saudi Arabia. The encouragement of  a healthy lifestyle will prevent disease and reduce healthcare costs in the long term. Seeing as people will live longer in the future, this must be encouraged.

Saudi Arabia Approves Physical Education Program in Girls’ Schools