Brassart Florian, Bakatchina Sadate, Alberca Ilona, Pomarat Zoé, Watelain Eric, Weissland Thierry, Faupin Arnaud
Pôle P3R-UFAM, Hôpitaux Paris-Est Val-de-Marne, Saint-Maurice, Val-de-Marne, France.
J-AP2S - No. 201723207F, Université de Toulon, La Garde, Var, France.
Front Sports Act Living. 2025 Mar 28;7:1511167. doi: 10.3389/fspor.2025.1511167. eCollection 2025.
Manual wheelchair (MWC) propulsion relies on upper limb power, coordination, and endurance. Propulsion asymmetry can reduce efficiency, yet the impact of fatigability on upper limb asymmetry remains underexplored. This study aimed to compare propulsion performance and asymmetry between wheelchair basketball (WB) and wheelchair rugby (WR) players and assess the effect of fatigability on asymmetry during repeated sprints.
13 WB and 10 WR players from French national teams performed 6 × 20 m sprints with 20-second recovery intervals. Inertial measurement units (IMUs) were placed on wheel spokes and the trunk captured wheel velocity and trunk motion. The Instantaneous Symmetry Index (ISI) quantified propulsion asymmetry.
Both groups showed performance decline across sprints, with WB players experiencing a drop in maximal power output and WR players showing reduced average sprint velocity. Asymmetry was highest at sprint initiation, with WB players exhibiting greater ISI values than WR players. Interestingly, WR players demonstrated reduced asymmetry at sprint onset, possibly due to sport-specific anthropometric adaptations. Trunk motion remained stable over sprints but was more pronounced in WB players.
The results highlight distinct fatigue-related adaptations in propulsion asymmetry between WB and WR players. The study's findings underscore the need for further exploration into the nuanced dynamics of propulsion and asymmetry in parasport performance.
手动轮椅推进依赖上肢力量、协调性和耐力。推进不对称会降低效率，但疲劳对上肢不对称的影响仍未得到充分研究。本研究旨在比较轮椅篮球（WB）和轮椅橄榄球（WR）运动员的推进性能和不对称性，并评估重复冲刺过程中疲劳对不对称性的影响。
来自法国国家队的13名WB运动员和10名WR运动员进行6次20米冲刺，每次冲刺后休息20秒。惯性测量单元（IMU）安装在轮辐上，躯干处的IMU记录车轮速度和躯干运动。瞬时对称指数（ISI）用于量化推进不对称性。
两组运动员在冲刺过程中表现均有所下降，WB运动员的最大功率输出下降，WR运动员的平均冲刺速度降低。冲刺开始时不对称性最高，WB运动员的ISI值高于WR运动员。有趣的是，WR运动员在冲刺开始时不对称性降低，这可能是由于特定运动的人体测量学适应性。躯干运动在冲刺过程中保持稳定，但在WB运动员中更为明显。
结果突出了WB和WR运动员在推进不对称性方面与疲劳相关的不同适应性。该研究结果强调有必要进一步探索残疾人体育运动中推进和不对称性的细微动态。
