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Unanswered Questions

318 questions with no upvoted or accepted answers
17
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 ...
15
votes
0answers
291 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 ...
11
votes
1answer
392 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 ...
6
votes
0answers
82 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 ...
6
votes
2answers
146 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 ...
6
votes
0answers
78 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
0answers
40 views

Is spot reduction necessarily a myth?

I have always known this to be a fact that spot reduction is a myth, but this article tends to claim otherwise. Here is a point, I'd like to highlight from the article: Theoretically, we have a ...
5
votes
1answer
180 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
0answers
30 views

Are there studies on the number of sets that should be performed per exercise?

It's now well established that the number of hard sets correlates well with hypertrophy. Are there any studies that investigate how a given number of sets should be distributed among different ...
4
votes
0answers
84 views

How many weightlifting styles are there?

Some weeks ago, my coach was explaining the starting positions, he pointed out the two different starting positions, he called them the East European and Chinese styles. I was trying to pay ...
4
votes
0answers
54 views

Going on your toes when doing landmine squats or thrusters

When doing landmine squats or thrusters people often advise to lift the heels off the ground (sometimes called lineman squat). Like here or here Now it is often said that doing squats and thrusters ...
4
votes
0answers
65 views

Is lactate threshold different for different activities and/or muscle groups?

Is the adaption resulting from lactate threshold training mainly in the trained muscles, in the cardiovascular system, or both? If I improve my lactate threshold through one kind of training, ...
4
votes
0answers
44 views

Weekly distance buildup for 100k ultra

I'm going to run a 100k next July. I'm trying to plan my weekly mileage, and I'm wondering what periodisation I should do. I'm currently thinking of going for a monthly basis. Increase in week 1 &...
4
votes
2answers
91 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
1answer
208 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 ...

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