Introduction This study aimed to examine the effect of arms involvement on the validity of vertical jump volleyball tests, evaluated under field conditions. Backed in similarities to increase vertical jump height by about 10% compared to jumping without an arm swing. Estimate in this study based on Standing Reach with both arms swing versus Myotest accelerometric system with hands on hips. Projected to inspect their correlations with performance in block and spike as technical volleyball tests, with and without step involved at the beginning of the vertical jump tests. Methods For this, we collected the performance of our most skilled players in the national championship into the following criteria (Standing Reach - Myotest system - Vertical Jump Spike - Vertical Jump Test Block with and without arm swings). Results Based on Pearson correlation at (p < 0.001). Our outcomes confirmed Standing Reach as the most correlated test with volleyball tests used compared to Myotest accelerometric system. As well as its significant correlation with Myotest in estimating the maximum athletic height in vertical jump. Conclusions Based on the study design and arm swings test protocols used. We confirm the swing of the arms as a key factor in the evaluation of vertical jumps in technical or athletic volleyball tests. Admitted in this study by the arm swings investment in Standing Reach and their relations with the performance recorded by the players in the test Spike or Block. Opposite to their interrelationships with players' performances registered by the Myotest accelerometric system arms protocol. Suggested in this study as a key protocol problem, that must be taken by the Myotest system to assess the vertical jumps in volleyball tests.
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