Jump and Change of Direction Speed Asymmetry Using Smartphone Apps: Between-Session Consistency and Associations With Physical Performance

Journal of Strength and Conditioning Research
Chris BishopCarlos Balsalobre-Fernandez

Abstract

Bishop, C, Perez-Higueras Rubio, M, Gullon, IL, Maloney, S, and Balsalobre-Fernandez, C. Jump and change of direction speed asymmetry using smartphone apps: between-session consistency and associations with physical performance. J Strength Cond Res XX(X): 000-000, 2020-The aims of this study were to (a) quantify the magnitude and direction of asymmetry from jump and change of direction speed (CODS) tests and (b) determine the relationship between these asymmetries and jump and CODS performance, in a test-retest design. Thirty Spanish national-level youth basketball athletes performed single leg countermovement jumps (SLCMJs), single leg drop jumps (SLDJs), and 505 CODS tests, all assessed using the My Jump 2 and CODTimer smartphone applications. All tests showed good to excellent reliability, with no significant differences identified between test sessions in jump, CODS, or asymmetry data. The direction of asymmetry showed substantial levels of agreement between test sessions for jump height during the SLDJ (Kappa = 0.72), but only fair levels of agreement for reactive strength during the SLDJ (Kappa = 0.25), fair levels of agreement for jump height during the SLCMJ (Kappa = 0.29), and slight levels of agreement for total time ...Continue Reading

Citations

Mar 23, 2021·Journal of Strength and Conditioning Research·Chris BishopPaul Read
May 25, 2021·Journal of Strength and Conditioning Research·Chris A BaileyTimothy C McInnis
Jul 3, 2021·Journal of Sports Science & Medicine·Alejandro Pérez-CastillaMar Cepero
Jul 25, 2021·International Journal of Environmental Research and Public Health·Max I PhukanRodrigo Ramirez-Campillo

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