Unanswered Questions

294 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 ...
14
votes
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 ...
10
votes
1answer
382 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
128 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
0answers
70 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 ...
5
votes
1answer
149 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
77 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
70 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 ...
4
votes
1answer
188 views

Safe weekly amount of crosstraining for over 40 healthy adults

I am a 42 yr old male. About a month ago I finished a running program that has me now well adapted to running 3 times a week for half an hour (the famous C25K, non-commercial and freely available at ...
4
votes
4answers
325 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
166 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 + ...
3
votes
0answers
61 views

Swimming after running. Effects on body temperature regulation

Triathlons have the swim leg first. But what about someone who wants to relax and cool down in the water after a run? It is known that running (or any exercise really) raises body temperature a bit. ...
3
votes
0answers
27 views

What are the principles for a correct headstand / sinsasana?

I have started including daily headstand in the morning (sinsasana). It feels like the most relaxing posture I have ever experienced. But, from time to time, (too often for my taste), I do feel ...
3
votes
0answers
25 views

Are 'dynamic' balance boards better for balance training than 'static' ones?

I have a simple round balance board with contact point at the middle. I've tried vew-do, with rolling balance point, that moves along the rail on the bottom of the board. It was terribly hard, I've ...
3
votes
0answers
88 views

Why didn't 5x5 work for my pullups?

Despite being reasonably well-trained in the past, I always sucked at pull-ups. At the beginning of this summer, I started training again. In the beginning, my max was only 1-2 clean pull-ups (I am ...

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