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I was reading this at http://anndeweesallen.com/dal_ra07.htm and found it strange that after the age of 30-32 it said that there is no release of GH in response to exercise. I find this hard to believe and was wondering if anyone could shed some light on this. Maybe someone knows what the exact mechanism that causes this is.
EXERCISE-INDUCED GROWTH HORMONE
Natural release of exercise-induced growth hormone is evidenced up to age 20. After age 20, GH release decreases until cessation at age 30-32. After age 30-32, growth hormone will not be released in response to exercise. Exercise-induced release of GH can be reinstated by stimulation of the pituitary with GHRA prior to exercise. Peak muscular output is necessary to GH release. Peak output is defined as exercise intense enough to exhaust the muscle in less than twelve repetitions. Aerobic exercise does not greatly increase muscle size, but does increase mitochondria sites in the muscle. Peak muscle output increases muscle size and induces GH release. Long-term muscle output does not develop large muscle nor does it trigger GH release.
EXERCISE-INDUCED GROWTH HORMONE
Natural release of exercise-induced growth hormone is evidenced up to age 20. After age 20, GH release decreases until cessation at age 30-32. After age 30-32, growth hormone will not be released in response to exercise. Exercise-induced release of GH can be reinstated by stimulation of the pituitary with GHRA prior to exercise. Peak muscular output is necessary to GH release. Peak output is defined as exercise intense enough to exhaust the muscle in less than twelve repetitions. Aerobic exercise does not greatly increase muscle size, but does increase mitochondria sites in the muscle. Peak muscle output increases muscle size and induces GH release. Long-term muscle output does not develop large muscle nor does it trigger GH release.
