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Biomedical subjects

W Graban

Publications and source records attributed to W Graban.

At least 37 records · Page 2Linked to original sources
PubMedDate not supplied

Chronoendocrinological studies in athletes. Circadian rhythms of T3, TSH, cortisol and testosterone.

Endocrine functions were studied in 83 healthy athletes, maintained under normal light-dark conditions, with normal activity-sleep patterns. In these subjects statistically significant circadian rhythms of T3, TSH, cortisol (CSL) and testosterone (T) were found; for each hormone two or three different types of circadian rhythm (with peaks of acrophase between: 6.30 a.m. and 1.30 a.m., 1.30 p.m. and 10.30 p.m., 10.30 p.m. and 6.30 p.m.) were observed. The following correlations have been demonstrated between the length of participation (in years) in performance sports and the mean circadian blood hormone concentration: a negative one for CSL (p less than 0.01) and a positive one for TSH (p less than 0.05). An increase of the mean circadian values of T concentration in venous blood was found in females fencers (n = 9).

Animals↗
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Chronoendocrinological studies in athletes. Circadian rhythms of HGH and IRI.

The serum concentrations of HGH and IRI studied over a 24-hour span in 83 healthy athletes under normal rest conditions in a normal living environment show statistically significant rhythms, validated and quantified by cosinor analysis; for each hormone three different types of the circadian rhythm (with a peak of acrophase between: 6.30 a.m. and 1.30 p.m., 1.30 p.m. and 10.30 p.m., 10.30 p.m. and 6.30 a.m.) were observed. The IRI response to a meal load underwent cyclic variations during the day.

Circadian Rhythm↗