0
What causes muscular fatigue after just a few minutes of intense exertion?
Wiki User
∙ 16y ago
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.
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
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.
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 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 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 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.
What is the ideal length of time for cool down following an intense workout?
3-5 minutes.
How do you get muscular in 3 minutes?
You can't. It takes time for muscles to build up through training and exercise.
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.
Intense exercise lasting 60 to 90 minutes relies prodominantly on what fuel source?
muscle protein
Which category of exercise is intense physical activity that lasts from a few seconds to a few minutes?
anaerobic exercise
