Initial Maximum Push-Rim Propulsion and Sprint Performance in Elite Men's Wheelchair Basketball.

Abstract

This study sought to report the reliability (intrasession) values of initial maximum push-rim propulsion (IMPRP) and sprint performance in elite wheelchair basketball (WB) players and to assess the involvement of strength in sprint capacity. Fifteen Spanish international WB male players participated in this study. The maximum single wheelchair push from a stationary position (IMPRP) and the sprint performance (ie,3, 5, and 12m) of WB players were measured in this study. IMPRP mechanical outputs V, Vmax, P, Rel. P, F, and Rel. F variables presented high reliability values (intraclass correlation coefficient [ICC] ≥ .92; coefficient of variation [CV] ≤ 8.04 ± 7.37; standard error of measurement [SEM] ≤ 29.92), but the maximum strength variables Pmax, Rel. Pmax, Fmax, and Rel. Fmax (ICC ≥ .63; CV ≤ 13.19 ± 16.63; SEM ≤ 203.76) showed lower ICC values and by contrast higher CV and SEM values. The most substantial correlations were identified between maximum IMPRP values (ie,V, Vmax, P, Rel. P, F, and Rel. F) and sprint performance in 3m (r ± confidence limits ≥ -0.74 ± 0.22, very large; R2 ≥ .55), 5m (r ± confidence limits ≥ -0.72 ± 0.24, very large; R2 ≥ .51), and 12m (r ± confidence limits ≥ -0.67 ± 0.27, large; R2 ≥ .44). The IMPRP test and sprint tests (3, 5, and 12m) are practical and reliable for measuring strength and speed in WB players. In addition, there were large to very large associations among strength variables (ie,P, Rel. P, F, and Rel. F) and all sprint variables. This could indicate a need to implement specific strength exercises in WB players to improve sprint capacity.