The Relationship Between Absolute and Relative Upper-Body Strength and Handcycling Performance Capabilities.

Abstract

To explore the relationship between absolute and relative upper-body strength and selected measures of handcycling performance. A total of 13 trained H3/H4-classified male handcyclists (mean [SD] age 37 [11]y; body mass 76.6 [10.1]kg; peak oxygen consumption 2.8 [0.6]L·min-1; relative peak oxygen consumption 36.5 [10]mL·kg·min-1) performed a prone bench-pull and bench-press 1-repetition-maximum strength assessment, a 15-km individual time trial, a graded exercise test, and a 15-second all-out sprint test. Relationships between all variables were assessed using Pearson correlation coefficient. Absolute strength measures displayed a large correlation with gross mechanical efficiency and maximum anaerobic power output (P = .05). However, only a small to moderate relationship was identified with all other measures. In contrast, relative strength measures demonstrated large to very large correlations with gross mechanical efficiency, 15-km time-trial velocity, maximum anaerobic power output, peak aerobic power output, power at a fixed blood lactate concentration of 4mmol·L-1, and peak oxygen consumption (P = .05). Relative upper-body strength demonstrates a significant relationship with time-trial velocity and several handcycling performance measures. Relative strength is the product of one's ability to generate maximal forces relative to body mass. Therefore, the development of one's absolute strength combined with a reduction in body mass may influence real-world handcycling race performance.