| Keywords |
Exhaustion exercise ; Saliva ; Stress hormone ; Immunity hormone ; Circadian rhythm |
| Abstract |
This study was designed to investigate the effect of consecutive exercise to exhaustion on the alteration of salivary hormones according to the time of day such as cortisol, Dehydroepiandrosterone(DHEA), Immunoglobulin A(IgA), Haptoglobin, Hemopexin, interleukin 6(IL-6) & C-reactive protein(CRP). Ten male students in K university participated in a consecutive exercise program to exhaustion performed at both 10 a.m.(cycle ergometer exercise) and 2 p.m.(treadmill exercise). The salivary hormones were measured between at 7 a.m., 10 a.m., 1 p.m. and 2 p.m.. All data was analyzed using repeated two-way ANOVA with post hoc test. At 10 a.m., there was a significant difference and the interaction with time and treatment in Cortisol, DHEA, IgA, Haptoglobin, Hemopexin & CRP. IL-6 revealed the interaction with time and treatment at 1 p.m. as well as Cortisol, DHEA, IL-6 and CRP showed the interaction with time and treatment at 2 p.m. These findings suggested evidence that consecutive exhaustion exercise may selectively control the salivary hormones depending on the time of day, allowing for physiological raw data to predict the conditioning statements of athletes after high-intensity training. |