Fatigue During Exercise Case Study

We’ve all gone through this feeling of exhaustion known as exercise. It can tire us out, yet leave a rewarding, kind of paradoxical feeling of energy.

The athletic training profession as we know it today first came into existence during the late nineteenth century with the establishment of intercollegiate and interscholastic athletics in the United States. (Prentice, 2014) Prior to this, early civilization athletics were unorganized. Although they were unorganized, there is information that suggests that Greek and Roman civilizations featured people who assisted athletes in reaching their peak physical condition. The evolution of intercollegiate athletics after World War I led to a new demand to prevent and manage athletic injuries. (Prentice 2014)

Athletic trainers specialize in preventing, diagnosing, and treating muscle and bone injuries and illnesses. Athletic trainers need at least a bachelor's degree. Nearly all states require athletic trainers to have a license or certification; requirements vary by state. The median annual wage for athletic trainers was $44,670 in May 2015.Employment of athletic trainers is projected to grow 21 percent from 2014 to 2024, much faster than the average for all occupations. As people become more aware of sports-related injuries at a young age, demand for athletic trainers is expected to increase.

This conclusion was supported by the biological background. The greater amount of previous exercise would cause higher release of lactic acid, inorganic phosphate and also would increase the likelihood of micro damage to the muscle fibres. Thus, greater the amount of previous exercise could lead to greater muscle fatigue which affected the rate of contraction of muscle fibres. Consequently, lower number of cycles was counted within a given time limit, as the

I know that the more times I skip, lactic acid will build up in my legs, from my own experience this makes you fell horrible. As our bodies perform strenuous exercise, we begin to breathe faster as we attempt to move more oxygen to our working muscles. The body prefers to generate most of its energy using aerobic methods, meaning with oxygen. The cells follow the aerobic process when the blood supplies enough oxygen to the cells, which is:- Glucose+ oxygen—>Carbon Dioxide+ water+ Energy. But when the blood cannot get the needed oxygen to the cells, it has to get the energy from the glucose in another way. The cells use the anaerobic pathway; It does this then by breaking glucose down into lactic acid, Glucose—>Lactic Acid+ Energy. Lactic acid is released into the muscles when they have used up glucose stores but still have intense energy needs. Small amounts of lactic acid operate as a temporary energy source, which helps you avoid fatigue during a workout. However, a build-up of lactic acid during a workout can create burning sensations in the muscles that can slow down or halt your activity. This is not an effective energy source for long periods of exercise, so the blood takes lactic acid to the liver which coverts it back into glucose to be used in the normal aerobic process. Scientist are always looking into ways to decrease lactic acid build up in elite athletes so they can perform faster

Jenkins, A. (2013, Oct 21). The History of Athletic Training. Retrieved May 16, 2015 from

If you do not know by now Exercise-associated hyponatremia is a fluid-electrolyte disorder caused by a decrease in sodium levels (hyponatremia) during or up to twenty-four hours after prolonged physical activity. Exercise-associated hyponatremia (EAH) first was described in Durban, South Africa, in 1981. If not taken care of immediately, EAH can led to tragic consequences. More than 500 marathons are held throughout the world each year, with the vast majority of competitors being recreational athletes as larger marathons can have tens of thousands of participants.

Muscle fatigue is the process of exhaustion or strength lost, as well as muscular endurance that corresponds with the building up of lactic acid in the muscles (Medical Dictionary) Throughout the lab it was discovered that the greater the number of muscles in the body that are used, the more fatigue builds up, and it becomes difficult to use those muscles. According to table 1.2 and 1.3, there was a decrease in the number of squeezes of a clothespin that were completed in 30 seconds for each of the 10 trials. As the number of trials were increased it became difficult to press the clothes pin quickly and efficiently, causing the fingers’ pace to slow down. The first couple of trials were easily completed without muscle soreness since the

When a muscle is overworked, the muscle can run out of all natural energy. Without energy, the muscle, or muscle pairs, can no longer contract. This condition is known as muscle fatigue. During a state of muscle fatigue, the muscle tissues loses oxygen, and the muscle is left with little to no air.

Annie is a swimmer who has started to suffer from sever muscle fatigue. Muscle fatigue is a decrease in force during lengthy contractions. Skeletal Muscle is made out of fascicles, which are then made up of muscle fiber cells and those cells are made of micro fibrils (Stanfield, C, 2017). All of these items make up a motor unit, which cause muscle units to contract due to the startup of the action potential that release neurotransmitters that depolarizes the muscle membrane (Stanfield, C, 2017). The neurotransmitters are released in an area known as the neuromuscular junction (Stanfield, C, 2017). In this junction. In the junction action potentials that are entering the axon terminal starts the free movement of acetylcholine that then goes into the synaptic cleft (Stanfield, C, 2017). The acetylcholine then travels through a cleft which binds to a nicotinic receptor on the motor end plate that then opens the ion channels that leads to the freedom of calcium from the sarcoplasmic reticulum (Stanfield, C, 2017). In order to determine why she was beginning to have muscle fatigue Annie had to face a series of test. One of the tests that Annie could have taken was an Electromyography, also known as an EMG.

Rest days are incredibly important in regards to muscle fatigue and athletic performance, because when you are resting your muscles recover and repair themselves. As a rough rule, aim for 7 hours minimum of sleep a night. Most professional Crossfit athletes sleep between 8 – 10 hours.

With decreased fatigue, you can extend your workouts safely and maximize the results of your exercise.

A term that can be used professionally is called Overtraining Syndrome. There are many effects from overtraining, but the most effective are in the sentences to follow. You get a washed out feeling and lack of energy, there is a sudden drop in your performance level, and you also suffer from depression. All of these symptoms often make the person feel a compulsive need to exercise. According to sportsmedicine.about.com, “one of the effects of the syndrome is not only failing to gain muscle, but also losing it.” There are several ways that you can tell if you are overtraining; one way is to document your heart rate over time. Another way is to keep pace of your heartbeat throughout a workout and if it slows, you might be heading into overtraining

Muscle fatigue is defined as a decrease in the maximum force generating capacity of a muscle (3). Muscle force and fatigability are correlated to muscle mass, muscle fiber type, and motor unit recruitment. Muscle fibers consume stored energy and generate force by contracting. If a muscle depletes its fuel supply faster than they can be replenished by metabolism, then fatigue occurs. The purpose of this study was to determine the time to fatigue to 50% of maximum clench force for both dominant and non-dominant arms, and then determine differences between male and female. Recent literature has suggested that there are sex differences in muscle fatigability, however the physiological mechanisms are not entirely understood. In general, men have

I am interested in the exercise physiologist/Health fitness specialist as advertised on your website. I am seeking an opportunity to grow in the area of exercise physiology. I have a strong educational background and some professional experience which I feel uniquely qualifies me for this job opportunity. I am currently a certified exercise physiologist. (ACSM- EP), certified cancer exercise trainer (ACSM CET) and currently pursuing my masters in Exercise Physiology.