ISSN:
1432-1041
Keywords:
met-enkephalin
;
plasma levels
;
exercise
;
physical training
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Medicine
Notes:
Summary Twenty-four unfit volunteers and twenty-three superfit athletes were subjected to a progressive intensity treadmill exercise to total exhaustion in order to study the plasma met-enkephalin response to exercise. Blood samples were collected before and 5 min post-exercise. The basal met-enkephalin levels were significantly higher in the superfit individuals (180 fmol·ml−1) than in the unfit individuals (126 fmol·ml−1). Post-exercise the increase from basal levels of plasma met-enkephalin was significantly higher in the superfit athletes (180–278 fmol·ml−1) than in the unfit individuals (126–157 fmol·ml−1). The magnitude of the met-enkephalin responses to exercise therefore appears to be dependent on the amount of work performed and the degree of previous physical training. Peripherally circulating opioid peptides may, therefore, possibly play a role in the body's adaptation to exercise training.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00558508
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