Stress hormones and physical activity
Hormone secretion during physical activity of specific duration and intensity is part of the stress response. In a study to investigate the secretion of ß-endorphin, leucine enkephalin and other recognised stress hormones during physical exercise, blood samples were taken from fourteen (14) health...
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| Format: | Article |
| Language: | Afrikaans |
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South African Journal of Science and Technology
1991-07-01
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| Series: | South African Journal of Science and Technology |
| Online Access: | http://www.satnt.ac.za/index.php/satnt/article/view/495 |
| Summary: | Hormone secretion during physical activity of specific duration and intensity is part of the stress response. In a study to investigate the secretion of ß-endorphin, leucine enkephalin and other recognised stress hormones during physical exercise, blood samples were taken from fourteen (14) healthy, male athletes who competed in a 21 km roadrace. Blood samples were collected before and after completion of the race. This study shows that ß-endorphin/ß-lipotropin, leucine enkephalin, prolactin, and melatonin may be classified as stress hormones in physical activity of duration 80 to 120 minutes and intensity exceeding 75%-V0₂max. Widespread intra-individual variation in serum cortisol concentrations prevent definite conclusion. The unexpected increase in serum testosterone levels warrants further research. |
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| ISSN: | 0254-3486 2222-4173 |