Author(s): Vaibhav Rai, Lalit Mohan Tiwari

Abstract:
Purpose: Diurnal variation is the fluctuations of anything which is happening or occurring during day light. The purpose of the study was to investigate “Diurnal variation in selected motor fitness components of university level male volleyball players.” rnMethod: The study was conducted on 30 male volleyball players of Punjab India, age ranging from 18 to 24 years. The subjects were selected from volleyball match practice group. The data was collected by administration of standard test for selected motor components. The subjects were tested two times (one time in morning (between 7 AM to 9 AM) and one time in evening (between 5 PM to 7 PM)). The standing broad jump test is used for measuring explosive strength, 30 yard dash test is used for measuring speed ability and Illinois agility test is used for measuring agility of the subjects. It was hypothesized that diurnal variation would significantly affect the performance of the subjects on selected motor fitness components. The data collected on motor fitness components was analyzed by dependent “t” test. The level of significance for testing the hypothesis was set at 0.05 level of confidence.rnFindings: The results have shown that no significant time of day (diurnal variation) effect was found for explosive strength (tcal=0.72

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