Anzeige
Erschienen in:
10.06.2024 | Original Article
Characterization of muscle oxygenation response in well-trained handcyclists
Erschienen in: European Journal of Applied Physiology | Ausgabe 11/2024
Einloggen, um Zugang zu erhaltenAbstract
Purpose
Peripheral responses might be important in handcycling, given the involvement of small muscles compared to other exercise modalities. Therefore, the goal of this study was to compare changes in muscle oxygen saturation (∆SmO2) and deoxyhemoglobin level (∆[HHb]) between different efforts and muscles.
Methods
Handcyclists participated in a Wingate, a maximal incremental test and a 20-min time-trial (TT). Oxygen uptake (VO2) as well as ∆SmO2, ∆[HHb], deoxygenation and reoxygenation rates in the triceps brachii (TB), biceps brachii (BB), anterior deltoid (AD) and extensor carpi radialis brevis (ER) were measured.
Results
ER ∆[HHb]max was 37% greater in the incremental test than in the Wingate (ES = 0.392, P = 0.031). TT mean power (W/kg) was associated with BB ∆SmO2min measured in the incremental test (r = −0.998 [−1.190, −0.806], P = 0.002) and in the Wingate (r = −0.994 [−1.327, −0.661], P = 0.006). MAP (W/kg) was associated with Wingate BB ∆SmO2min (r = −0.983 [−0.999, −0.839], P = 0.003), and Wingate peak (r = 0.649 [0.379, 0.895], P = 0.008) and mean power (W/kg) (r = 0.925 [0.752, 0.972], P = 0.003) was associated with right handgrip force. The strongest physiological predictor for TT performance was BB ∆SmO2min in the incremental test (P = 0.002, r2 = 0.993, SEE 0.016 W/kg), Wingate BB ∆SmO2min for MAP (P = 0.003, r2 = 0.956, SEE 0.058 W/kg) and right handgrip force for Wingate peak power (P = 0.005, r2 = 0.856, SEE 0.551 W/kg).
Conclusion
Peripheral aerobic responses (muscle oxygenation) were predictive of handcycling performance.
