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Unanswered Questions

285 questions with no upvoted or accepted answers
16
votes
1answer
1k views

Firstbeat Energy Expenditure Algorithm

I am looking for an implementation (or a document that describes the actual algorithm) for the energy expenditure/VO2/EPOC calculation from the heart rate variability. A few white papers about ...
13
votes
0answers
251 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 ...
10
votes
1answer
376 views

Does having abnormally low IGF-1 levels affect my ability to gain muscle mass?

I'm a 24 year old male and fairly recently found out that I have abnormally low IGF-1 levels. Mine is 90 (ng/mL) whereas the average range for my age is from 116-353 (ng/mL). I've always been pretty ...
5
votes
1answer
113 views

post stretching tightness in posterior leg muscles

I'm a 28yo female, very physically active (circus arts, martial arts, cycling, yoga), and have been for my entire life. I have partial hyperflexibility (arms, lower back, toes), and have been working ...
5
votes
1answer
133 views

Asymmetry in cross body shoulder stretch

I have recently noticed that I have a huge asymmetry in the cross body shoulder stretch. In particular, when stretching the left arm, I can push it to be almost parallel, to my body, while with my ...
4
votes
2answers
76 views

Getting blister-y feet after long evening walks

Since the New Year, I've been doing 2-3 hours walk every night, while eating less. People remark that I look like I'm 30 lbs lighter now in April. I feel good but not that good ... My question is: ...
4
votes
0answers
93 views

Ultramarathons: would 'racewalking' be faster?

For races which are long enough that the average speed falls below the maximum speed achievable via a 'walking' style of movement, is it more energy efficient to 'walk' at that speed as opposed to ...
4
votes
0answers
63 views

Is low intensity cardio the only way to induce an increase in stroke volume?

For the guys versed in endurance training, it is now clear that low intensity steady state cardio brings one key adaptation that HIIT is not able to : an increase in the heart stroke volume (also ...
4
votes
1answer
255 views

Does sitting really reduce ROM?

If I had a dollar for something along the lines of... "lots of sitting every day gives you tight hip flexors and hamstrings/calves...". I am skeptical of that claim. It's plausible, but seems taken ...
4
votes
2answers
188 views

How do I improve my body composition?

Hey! So over the past year I lost a bunch of weight ( I was 69kg and now I am 54 ish). But I really want to build muscle especially around my glutes and my back! As you can see I have very little ...
4
votes
2answers
148 views

Weight size when training for power (not for maximum strength, resistance or body size)

If our main goal is to increase our power (for kicking or striking a ball, for example), what size of weight would we use? Could light weights used ballistically be better than, say, big weights + ...
4
votes
2answers
164 views

How can I engage my chest more when doing pushups?

I understand that pushups are supposed to be a chest exercise primarily. However, I find that I use my triceps and anterior deltoids more than my chest when doing the exercise. How can I engage my ...
3
votes
0answers
101 views

What weight punching bag should I get?

I'm looking to buy a heavy punching bag to practice karate and possibly teach myself some boxing. I'm 15 and I weigh about 140lbs and I was wondering what punching bag weight I should choose. I heard ...
3
votes
0answers
32 views

Marathon training with high-ish distance, low instensity

I've been cycling to work the last 2 years, and now I decided I wanted to switch it up and mostly run it. It's 7km (~4 miles I guess), so twice a day 5 days a week pretty much. Gives me ~70km per week....
3
votes
0answers
61 views

How to keep flexibility after stretching

I stretch almost every day, and I have been doing so for a few months. My hands stop short almost a hand length from my toes. After I stretch, I can touch them. The next day, I'm back to zero. This ...

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