Responses of some physiological variables for variation in Biological rhythm after anaerobic effort

:1. () .2. .3. .4. .5. . (10) - (23.62 + 1.92) RAST . : ( ). "" . :1. .2. .The study aims at exploring the : Effects of the morning and late afternoon chronobiological variations in the Hemodynamic in resting position for the Study sample . Effects of the morning and late afternoon chronobiological variations after anaerobic repeated effort in maximum intensity for the Study sample . Effects of the morning and late afternoon chronobiological variations on the core temperature and some blood serum variables in resting position for the Study sample . Effects of the morning and late afternoon chronobiological variations on the core temperature and some blood serum variables after anaerobic repeated effort in maximum intensity for the Study sample. Effects of the morning and late afternoon chronobiological variations in fatigue index for in the level of reduce in anaerobic power for six repeated fast start The sample has been collected randomly which includes (10) students of physical Education Department in Basic Education College (23.62 + 1.92).The Running-based Anaerobic Sprint Test, RAST, was applied by sample. The physiological variables consist of: (center core temperature, systolic and diastolic blood pressures, pulse pressure , Mean arterial blood pressure , blood sugar and calcium ion) . Having collected the data, they were analyzed statistically by using arithmetic means, standard deviations, and "t" test for two paired samples.After presenting and discussing the result, we can conclude the following: The change in Biological rhythm have a significant effect on some study variables (systolic blood pressure , pulse pressure and calcium ion ) . they were higher in the more than in the late afternoon after performing the anaerobic effort. The change in Biological rhythm have a significant effect on some study variables (Center core and calcium ion) which are higher in the morning than in the late afternoon in resting position .