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THE ROLE ÔF GROWTH HORMONE IN THE MOBILIZATION OF FUEL FOR MUSCULAR EXERCISE
Author(s) -
Hunter W. M.,
Fonseka C. C.,
Passmore R.
Publication year - 1965
Publication title -
quarterly journal of experimental physiology and cognate medical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0033-5541
DOI - 10.1113/expphysiol.1965.sp001806
Subject(s) - mobilization , morning , growth hormone , human growth hormone , medicine , endocrinology , hormone , carbohydrate , chemistry , political science , law
Plasma human growth hormone (HGH) levels were consistently below the threshold of sensitivity of present methods of detection (<31 µmg./ml.) in adults before rising in the morning. Moderate exercise in the post‐absorptive state caused a rise up to 50‐fold in 1 hr. This rise did not occur if carbohydrate was made available during the exercise. In the second hour of walking a fall in plasma HGH occurred, and there was a rise 1‐2 hr. later. It appears probable that HGH, through its lipotrophic action, has an important rôle in initiating and maintaining the mobilization of depot fat during exercise.