==== " i wonder if the decrease has to do with lower heart rate hikes when you get used to the same workout? i find that the more i 'run' (i have to do low impact so i use an elliptical), it's harder to get my heart rate up and takes longer." ====
As your body becomes more efficient at doing things, it doesn't need as much oxygen, which is why your HR also decreases.
By the way, the study is 50 years old and only involved 2 subjects.. so its usefulness is questionable.
Interesting. I thought it would be more than 7% to. I am wondering whether this is because running is such a natural activity?
I do note that the article pretty much contradicts itself. It claims that you burn more calories per mile by running faster, but if you do the math on the example in the article, it actually shows the calorie burn to be identical on a per mile basis (113.4 calories per mile).
that is really interesting, but it's along the same line of thought that you need to consistently make workouts more difficult by changing them up- be it intervals, increased speed, etc. i wonder if the decrease has to do with lower heart rate hikes when you get used to the same workout? i find that the more i 'run' (i have to do low impact so i use an elliptical), it's harder to get my heart rate up and takes longer.
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