Full text is available at the source.
Twenty‐four hour profiles of four hormones under constant routine
Daily patterns of four hormones measured under constant conditions
AI simplified
Abstract
Melatonin, TSH, and cortisol exhibited clear circadian rhythms during a 36-hour forced wakefulness period.
- Subjects were four healthy men aged 22-24 years.
- Blood samples were taken hourly while food and water were provided bi-hourly.
- Melatonin, thyroid stimulating hormone (TSH), and cortisol showed distinct circadian patterns even without physical exercise.
- Growth hormone (GH) secretion did not appear to be entirely regulated by the circadian rhythm.
- The suppression of GH around body temperature nadir suggests some level of circadian modulation.
AI simplified