Muscle Fatigue Essay

568 words - 2 pages

Muscle fatigue is weakness or weariness resulting from exertion or prolonged stress and the failure to maintain an expected power output. (Amussen) The process by which your body produces energy is called glycolysis. During glycolysis, glycogen is broken to produce creatine phosphate, which releases energy. The energy released catalyzes a reaction to produce ATP. The ending product of glycolysis is lactic acid, which is created by breaking pyruvate acid down. Then lactic acid is broken down to produce lactate. For each compound of lactic acid that is formed the cell gains a lactate compound and an H+. The increase of H+ in a cell causes the pH to decrease, which causes the cell to become acidic. The acids in muscles cause the fibers' calcium-binding capacity to decrease, which then limits muscle contraction, which causes muscle fatigue. (Mullick) During muscle fatigue, feedback of nerve impulses from the fatigued muscles interrupts on a part of the reticular formation and causes a hang-up of voluntary effort. (Amussen) It is important to understand that muscle fatigue results from metabolic reasons and not structural changes in your muscle.
Peripheral muscle fatigue involves the motor units, such as motor neurons, peripheral nerves, motor endplates, and muscle fibers. There are two different sites where repeated contractions may cause muscle fatigue. One is the transmission mechanism, which is basically the neuromuscular junction, muscle membrane, and endoplasmic reticulum. The other one is the contractile mechanism, which is the muscle filament. A muscle fiber's mechanical response declines with fatigue. Peripheral muscle fatigue is caused by changes in the internal conditions of the muscle. The changes can be biochemical, depletion of substrates, high-energy phosphate compounds in the muscle fibers, and...

Find Another Essay On Muscle Fatigue

Branched Chain Amino Acids On Sports Performance

2307 words - 9 pages degradation in skeletal muscle” (Blomstrand, Sonja and Newsholme 485). However, this study also affirms that a few studies on this aspect of BCAAs have shown contrary results. Therefore, further studies will have to be done before establishing the potential role of BCAAs in reduction of protein breakdown. Muscle soreness, inflammation and sensation of fatigue In a double-blinded cross-over

electromyography Essay

1593 words - 6 pages .29 mv to .21 mv in the RAW channel. Whereas with forearm two, the measurements went from .30 mv to .18 mv to .28 mv then increased to .37 mv in the RAW channel. For all the recorded results see (Table 2)Table 2: The measurement of the subjects muscles during the resting state between clenches. When the muscles have exhausted its supply of energy and can no longer respond to stimulation is known as muscle fatigue, the


1555 words - 6 pages , training and preparation before a bodybuilding competition is much more strict and differs in many ways from off-season routines.Upon deciding to take up bodybuilding, his primary goal must be to learn the proper techniques in order to fatigue the muscle properly. Once the muscle has been brought to a point of failure, it must be given time to rest and then it will grow in size.In order to achieve maximum intensity for the muscle during a workout

Pilot Fatigue

1776 words - 7 pages Introduction Most of the Aviation accidents have been greatly attributed to “Pilot Fatigue” (Mohler, 1998). This is because a pilot’s input into the aircraft is majorly dependent on his consciousness on the job, therefore incase he or she may be fatigued then this provides room for error in his inputs (Smith, 2008). Even though the technological advancements in avionics the flight systems of the current aircrafts have preventive mechanisms put

The Muscular System

1329 words - 5 pages develop strength and increases volume, elasticity and contractility. Exercising also helps in holding up better to fatigue. Maintaining a healthy and active lifestyle will help the body as it ages. As the body ages, the size and power of all muscle tissue decreases. Skeletal muscles become less elastic and the tolerance for physical exercise decreases. Also, the body’s ability to recover from muscular injuries decreases, restricting mobility as one

Trigger Points

1409 words - 6 pages Trigger points are known as tender nodes of degenerated muscle tissue causing local and radiating pain that may be bound to a single muscle or to several muscle groups. Their structure consists of small-circumscribed hyperirritable foci in muscles and fascia, often found within a firm or taut band of skeletal muscles. Trigger points may also occur in ligaments, tendons, joint capsule, skin, and periosteum. When palpating a trigger point, a local

blood pressure lab report

2497 words - 10 pages production of lactate. Response Feedback: Nicely done. Question 1210 out of 10 points What is the difference in the mechanism that leads to fatigue during small and large muscle mass exercise? Selected Answer: During small muscle mass exercise cardiac output does not plateau and so local perfusion of the muscle limits oxygen delivery whereas during large muscle mass exercise cardiac output reaches a plateau and so there is a central (HR

Chronic Fatigue Syndrome

1894 words - 8 pages cannot be proven with the current antibody testing. Though this remains an area of great controversy, the psychological factors influencing those diagnosed with chronic fatigue must be considered as well. Many of the symptoms that go along with this illness, such as headache, muscle aches, difficulty in concentrating, or sleep disorders are also major characteristics in primary mood disorders. On the other hand, the remainder of the symptoms

M.E. and FMS

3178 words - 13 pages during a relapse, a period of inactivity may help. M.E. is a highly variable illness, a wide range of symptoms can occur and these may change during the course of the illness. The central feature of M.E. is the way in which symptoms behave. Fatigue, malaise, muscle pain and other symptoms are characteristically provoked by increased activity of any type, usually with delayed impact. This is seen with the highly common

Creatine: Positive Effects Vs. Negative Effects

1980 words - 8 pages phosphate that's stored in the muscle the more rapidly the ADP converts to ATP. When the ATP supply in the body has been depleted, fatigue sets in. Since creatine helps recycle ADP to ATP quicker, one will have increased energy in their muscles and will be able to train for longer periods of time. The presence of creatine in the body is not what causes the muscles to grow and get stronger. Instead it is the energy that it helps create the longer

This is about the 400m sprint, and the energy systems that is uses, from Adenosine Tri Phosphate, to the Lactic Acid system

793 words - 3 pages Twitch & Slow Twitch. The fast twitch contract rapidly but fatigue easily whereas the slow twitch contract slowly but keep going longer.The fast twitch muscle fibres are responsible for the high speed, high power movements over short periods of time. They use mainly carbohydrate for fuel and produce lactic acid, which as it builds up inhibits the muscle contracting.The slow twitch muscle fibres produce less power but can continue for longer periods of time. They use a combination of carbohydrate & fat burned in the presence of oxygen and the main waste product is carbon dioxide that can easily be removed from the body.

Similar Essays

Effect Of Driver Fatigue Influence By Road Condition

581 words - 3 pages defined subjectively by self-reporting and defined objectivelyby degraded performance. (Belenky, et al., 2012). There are several terms that attributed with various meanings that is as local physical fatigue (e.g. in a skeletal or ocular muscle), physical fatigue (e.g. following heavy manual labour and protracted physical labour) or “central nervous” fatigue (sleepiness) as well as neurobiological (biologically determined sleep-awake rhythms

The Important Role Of Skeletal Muscles In The Human Body

2245 words - 9 pages low-level contracted state called muscle tone. Muscle tone helps maintain the muscle’s health and is important in stabilizing the skeleton’s movable joints. Sometimes, a steady, strong stimulation keeps the muscle in a state of tetanus, which causes the muscle to become fatigued. Muscle fatigue is a decrease in the muscle’s ability to generate force, or develop tension. Rest allows the muscle to contract again. The period of time before the

Compassion Fatigue Essay

1219 words - 5 pages dread about going to work or a decrease in desire to care for patients is an indication that compassion fatigue may be developing. The physical symptoms of compassion fatigue may seem initially like a reaction to stress. The development of symptoms such as headaches, GI upset, muscle tension, insomnia, fatigue, or cardiac changes, such as chest pain or palpitations, can be a physical response to compassion fatigue (Lombardo, 2011). The emotional

Compassion Fatigue Essay

1299 words - 5 pages , muscle tension, insomnia, fatigue or alterations in cardiac function, such as chest pain or palpitations, can be a physical response to compassion fatigue (Lombardo, 2011, p. 3). Emotional health status is a major contributor in human response to stress. Responses that indicate compassion fatigue can vary from mood swings, irritability, and anxiety to loss of memory, decrease in concentration and poor judgment. If at any time during self