Document Type : Research Paper I Open Access I Released under CC BY-NC 4.0 license


1 Associate Professor, Exercise Physiology Department, Faculty of Sport Sciences, University of Guilan, Rasht, Iran

2 PhD Student of Exercise Physiology, Faculty of Sport Sciences, University of Razi, Kermanshah, Iran,

3 MSc Student of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht, Iran


Sleep deprivation has negative effects on performance and resulted in elevating of mortality risk, cardiovascular disease and diabetes. The purpose of this study was to investigate the effects of 30 hour sleep deprivation on serum levels of C-reactive protein, blood lactate, muscular strength and Physiological factors of RAST test in active students. The present study was a semi-experimental one which used a pretest-post‌test design. 20 healthy male student (age: 20.5±3 y, height: 171±9.5 cm, weight: 69.50±7.45 kg, and body fat: 14±2.5) by minimum one session activity in week were selected with cluster-random sampling. Subjects 7 days before sleep deprivation and after 8 hours of complete sleep were performed anaerobic power (RAST) and one repetition maximum tests. In order to measure blood lactate, 6 minutes after RAST test, and serum levels of C-reactive protein, 30 minutes before begin tests, blood samples were collected. Seven day's later, after a 30 hours' sleep deprivation, these tests were performed again. In order to statistical analysis software SPSS version 20 and the independent t-test were used. Statistical analysis of the results showed that 30 hours of sleep deprivation can induce to significant reduction in max power, mean power and min anaerobic power, and the C-reactive protein levels, lactate and fatigue index increased significantly (p<0.05). But, had no effect on muscle strength. To maintain health and optimal sport's performance, it seems to be necessary control of sleep's rate of active individuals and athletes. Also, in order to minimize inflammatory conditions, and thus possible reduction the cardio-vascular risk factors, individuals would be informed about likely negative and side effects of periods of sleep deprivation.


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