Effects of Exercise on Circadian Rhythms of Cortisol
Year: 2013
Type: article
Abstract: This study was to investigate the effects of exercise on the circad ian rhythm of cortisol practiced at the lowest and peak levels of cortisol circadian rhythms in 10 males (age 20 years). Measurements were taken over a four-week period. In first week, physiological parameters, body mass index and performance parameters were measured and psychological tests conducted for all part icipants. In second week, circad ian rhythm o f cort isol was determined, and blood was taken every 4-hour over 24-hour (08:00am-12:00p m-16:00p m-20:00p m-00:00am-04:00am) fro m each participant. In third week, participants performed exercise day-mo rning at 08:00am at peak level of circadian rhythm of cort isol. Blood was taken before and after each exercise day-mo rning, as well as every four hours over 24-hour. Finally, in the last week of study, participants performed exercise day-evening at 20:00p m at the lowest point in circadian rhythm of cortisol and their blood were also taken before and after the exercises in addition to the four hour regimen. Exercising at the lo west and peak points of cortisol changed the body's cortisol circad ian rhythm. Cort isol levels were higher after exercise day-evening than after exercise day-morn ing. Although the level of cortisol at exercise day-evening was higher than at exercise day-morning, recovery period after exercise day-evening was faster than after exercise day-morning.
Language: English
Subfield: Behavioral Neuroscience
Field: Neuroscience
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W2228589980