Questions tagged [physiology]

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0answers
120 views

Instantly increasing flexibility by becoming angry as a result of pain

When a person experiences severe pain his body enters some sort of "survival mode" and as a result his flexibility (and strength I seem to remember) is increased. This is demonstrated here by Charles ...
2
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3answers
280 views

Can knee flexion exercises improve hip extension strength?

I have hyperlordosis from being seated for much of the day. I understand that I need to stretch my hip flexors and lower back and strengthen my abdominals and hamstrings/glutes to help reduce the ...
1
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1answer
45 views

How can I increase my vertical jump?

I am a 5"6' guy who takes active participation in football (soccer) and other activities like gym and calisthenics.The problem is due to my short stature,I need a higher jump to compensate the height ...
3
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1answer
289 views

Foot splay whilst running

Hi all, I’ve noticed that I have foot splay just on the right hand side whilst running. Is this a problem or just a natural quirk? Anyone else experience this? Thanks all.
14
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0answers
266 views

Losing Lean Muscle Mass (Detraining)

I have never fully understood how this exactly works. These questions pertain to the long term effects of strength training only. Basic Physiology of Hypertrophy (what is understood) During muscle ...
7
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1answer
253 views

Rationale behind Rep Range recommendations - Strength vs Hypertrophy

It makes no sense to me why the rep range for “hypertrophy” and body builders is according to NSCA and many other sources is 3 sets and 10-12 reps. At the most basic level cross bridges formation ...
-1
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1answer
123 views

Strengthen Teeth [closed]

Recently come into ownership of a large amount of very very tough beef jerky (I got it free because no one can eat it). And was quick to realize just how wimpy my teeth were. Just a few stripes and my ...
1
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1answer
54 views

Strength crossover with muscular endurance

From 'Building The Gymnastic Body' '...our strongest student won the push-ups competition with 350 push-ups [not in a row], but the student who came second, with 300 push-ups, was a mediocre ...
4
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1answer
91 views

Scientific evidence for physical, not psychological, somatotying

What actual evidence is there, for or against, towards somatotypes on a physical level.
3
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2answers
181 views

What causes an annoying “lethargy” which increases on consecutive days of rest from running?

This question is about something I've been experiencing consistently for some fifteen years. If I'm training consistently in running, say putting in 8 miles a day, five days a week, I experience a "...
3
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1answer
120 views

Climbing the stairs in digitigrade fashion - less efficient, harmful?

When going up a staircase at work, I recently realized that my heel barely ever touched the surface of the stairs. At first, I dismissed it, figuring that it just made sense to put the entire foot on ...
3
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2answers
130 views

What might happen if I get very low blood sugar during a run and continue running?

During a recent run, due to low blood sugar, I developed double vision. Otherwise, I felt great. Out of prudence, I quit and decided to walk home. I had eaten nothing for 14 hours before the run, so I ...
2
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2answers
9k views

When a muscle can flex so tight it's painful, is anything wrong?

As I train various muscle groups, I've noticed that I cannot flex a few of them the way I would biceps or quads. The flex becomes painfully tight verging on a muscle cramp before I finish the range of ...
5
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2answers
170 views

Relation of physical fitness and age

Why does the physical fitness tend to decline around the age of 30-35? It is obvious that many athletes(football, sprint etc.) tend to stagnate and 'lose' the physical fitness regarding speed, stamina ...
2
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1answer
152 views

Should cows milk be avoided during periods of heavy exertion?

Assuming you are not lactose intolerant, does milk have any specific negative effects on you during heavy exertion? We're not talking about milk calories or fat related to weight loss. Does milk ...
2
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1answer
718 views

Mechanism and recovery of lower back pain?

I normally recover from lower back pain just going to run. It results from studying too much and sitting - skipping gym and sport during exam weeks. It alleviates normally after one hour running. ...
3
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2answers
570 views

Is the muscle pump after exercise due to increased cellular Na (due to reduced ATP availability)?

Cellular hypoxia leads to reduced ATP, resulting in Na/K ATPase down regulation reducing the activity of the Na/K pump. (Since I'm limited to two hyperlinks in a question currently, this first one ...
2
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2answers
353 views

Is there a physiological reason why male to female transsexuals can't compete in women's weightlifting?

Let's assume the following for a moment: a person grows up as a man, with the matching hormonal profile for his first 20 years that person then decides to undergo hormone replacement therapy (HRT) ...
17
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9answers
78k views

How does Voodoo Floss work?

Voodoo Floss is a new(?) trend in CrossFit that basically involves, if I understand it correctly, wrapping a muscle group or joint very tightly in a thing called a voodoo band while stretching or ...
2
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1answer
100 views

When are the physical benefits of a single workout realized?

When does your body actually build muscle in response to fatigue from a workout? For example, if you slam your arms in one work out ( say any combination of, curls, pullups, pushups, bench press, etc....
1
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2answers
141 views

Is there a connection between general fitness/workout gain and body hair?

It might be a silly question but something that have been bugging me for many years now. Pretty much all male athletes (regardless of their discipline) look pretty much like newborn babies with the ...