Changes of beta-endorphin level in blood during prolonged exercise.
In 49 healthy subjects during 2 h exercise on bicycle ergometer four variants of changes of beta-endorphin level were observed: 1. an increase during first 30 min followed by a decreased below initial values; 2. biphasic increase (peak values at the 30th and 120th min); 3. increase only during the 2nd h of exercise; 4. decrease during the whole period of exercise. For trained subjects the most common was the biphasic increase, for untrained ones--the overall decrease.
Viru
A
A
Department of Sports Physiology, Tartu University, Estonia, U.S.S.R.
Tendzegolskis
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Z
Smirnova
T
T
D000324:Adrenocorticotropic Hormone / Q000097:blood; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D008297:Male; D005082:Physical Exertion / Q000502:physiology*; D011863:Radioimmunoassay; D013997:Time Factors; D001615:beta-Endorphin / Q000097:blood*
D001615:beta-Endorphin; D000324:Adrenocorticotropic Hormone; D006854:Hydrocortisone