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Reduction in the effectiveness of a muscle or muscle group reflected by a decline in peak tension. Local muscular fatigue may be due to one or more reasons, such as failure of a motor nerve to transmit nerve impulses to the muscle; fatigue at the neuromuscular junction through depletion of neurotransmitters; inability of the contractile mechanism (the actin and myosin myofilaments) to generate force; accumulation of protons from lactic acid in the muscle; depletion of ATP and phosphocreatine; or failure of the central nervous system to initiate and relay nerve impulses to the muscle. The most probable sites of local muscular fatigue are the neuromuscular junctions, the contractile mechanism of the muscle itself, and the central nervous system. Fatigue at the neuromuscular junction, which might be more common in fast twitch fibres, is probably due to depletion of http://www.answers.com/topic/acetylcholine. Fatigue within the contractile mechanism may be caused by accumulation of protons, depletion of ATP and phosphocreatine; depletion of muscle glycogen; dehydration; or lack of oxygen and inadequate blood flow.
What else can I help you with?
Which of the following causes muscular fatigue after just a few minutes of intense exertion?
For some reason your body is not keeping up with you. It could be heart problems, oxygen deficiency or just low nutrients in your blood. You should really see a doctor because it could be serious. Even very young people can have a defective heart or resperitory system.
What benefits will you get from jogging at least 30 minutes a day help your muscular endurance?
Jogging for at least 30 minutes a day enhances muscular endurance by improving the efficiency of the muscles and increasing their ability to sustain activity over longer periods. This aerobic exercise promotes better blood circulation, delivering more oxygen and nutrients to the muscles, which helps them perform better and recover faster. Additionally, consistent jogging strengthens the cardiovascular system, allowing the body to support prolonged physical exertion with less fatigue. Overall, this routine contributes to better stamina and overall fitness.
How long do you have to work?
Light to moderate exercise 30 minutes a day, 3 to 5 times a week, will improve heart and respiratory function in almost anyone. To lose weight, longer and more vigorous activity is required. You can burn up several hundred excess calories (kcal) per hour of muscular exertion.
How long do you have to work out?
Light to moderate exercise 30 minutes a day, 3 to 5 times a week, will improve heart and respiratory function in almost anyone. To lose weight, longer and more vigorous activity is required. You can burn up several hundred excess calories (kcal) per hour of muscular exertion.
How long does it take to pass away from positional asphyxia?
As little as a couple of minutes depending on the circumstances regarding physical exertion beforehand.
What is ideal length of time for cool-down following intense workout?
Five to 10 minutes
What is the movie Salt rated?
PG-13 For intense scenes of violence, action, intense kissing scenes, and drinking Lasts 91 Minutes
How do you get muscular in 3 minutes?
You can't. It takes time for muscles to build up through training and exercise.
How log is cocaine highs?
Depends on the route of administration. Smoking it results in a really intense high for a few minutes then a crash. Snorting it results in a rather intense high (less than smoking it) but the high lasts longer, up to 15-20 minutes typically. Taking it orally results in the longest high, but it is the least intense.
Describe stable angina due to ischemia?
Stable angina occurs during exertion, can be quickly relieved by resting or taking nitroglycerine, and lasts from 3 to 20 minutes.
What is the ideal length of time for cool down following an intense workout?
3-5 minutes.
Intense exercise lasting 60 to 90 minutes relies prodominantly on what fuel source?
muscle protein
