Why do muscle cramps occur after vigorous exercise? How does creating ATP take less energy than using it? How does making ATP take less energy than we get out of it? Why aren't muscles a good source of glucose during starvation?
Muscle fatigue: what, why and how it influences muscle function. J Physiol 2008;586:11-23.Enoka, R. M., & Duchateau, J. 2008. Muscle fatigue: what, why and how it influences muscle function. J Physiol, 5861, 11-23. http://doi.org/10.1113/jphysiol.2007.139477...
Much is known about the physiological impairments that can cause muscle fatigue. It is known that fatigue can be caused by many different mechanisms, ranging from the accumulation of metabolites within muscle fibres to the generation of an inadequate motor command in the motor cortex, and that the...
Dan - The key to this is that not all exercise does this, in many ways. It’s very much about the load that you apply through the muscle. We talk about stress, and we have to apply stress and it’s a biological stress that you apply to the muscle. When we think about the muscle...
Warming up the body typically requires movement of some kind, so a warm-up will almost always include some element of cardiovascular exercise, whether that is a short jog, high-stepping back and forth, or a few sprints. This cardio will help to get your heart rate up, delivering more oxy...
As your body adapts to cold weather, muscle contraction increases and oxygen supply to your muscles decreases, leading to muscle pain or stiffness.
cramps occur, evidence-based prevention strategies are few and far between. If fatigue is one of the main causes of increased susceptibility to cramps, then methods to delay fatigue – such as fluid intake and salt replacement during exercise – may help prevent them. This can also aid ...
What does a myasthenic crisis feel like? Morning headaches, or feeling tired during the daytime. Waking up frequently at night or feeling like you are not sleeping well. Weak cough with increased secretions (mucus or saliva) or an inability to clear secretions. Weak tongue, trouble swallowing ...
While this feeling can occur at the beginning, middle, or end of your run, when it happens matters. “Feeling it at the start [of your run] might suggest inadequate warm-up or previous fatigue,” Lamberson says. “Experiencing it in the middle or end can indicate fatigue, dehydration, or...
Why is the muscle strongest during the eccentric portion of a resistance exercise movement? Why does inflammation occur due to physical exertion, and what is the consequence? Explain what you could do nutritionally to minimize the inflammation that occurs due to physical exertion. Explain why saturat...