Department of Physical Activity and Sport, Faculty of Sport Sciences, CEIR Campus Mare Nostrum (CMN), University of Murcia, 30720 Murcia, Spain.
Locomotor System and Sport Research Group (E0B5-07), University of Murcia, 30720 Murcia, Spain.
Int J Environ Res Public Health. 2022 Oct 10;19(19):12985. doi: 10.3390/ijerph191912985.
The aim of this study was to determine the optimal upper-limb range of motion (ROM) profile for the catch phase of the clean movement (CPCM) and to identify the key ROMs for performing the CPCM in CrossFit athletes.
A prospective cohort study of twenty CrossFit athletes aged 20-36 years was conducted. Data were collected regarding age, anthropometrics, CrossFit training experience and upper-limb ROM. The ROM was measured using the ROM-SPORT method. After 7 months, athletes performed a clean movement with a load of 80% one repetition maximum. A Bayesian Student's t-analysis, binary logistic regression analysis and Receiver Operating Characteristic analysis were performed.
The optimal upper-limb ROM profile that predicted correct CPCM performance was 78° in shoulder extension, 173° in shoulder flexion, 107° in shoulder external rotation, 89° in shoulder internal rotation, 153° in elbow flexion, 99° in elbow pronation and 92° in wrist extension (area under the curve ≥ 651; positive predictive value ≥ 80%). Shoulder external rotation, elbow pronation and wrist extension were found to be the most important ROMs for the efficient and safe performance of CPCM (area under the curve ≥ 854; positive predictive value ≥ 85.7%).
The upper-limb ROM profile is associated with proper clean performance. Further studies are warranted to determine whether improving flexibility on upper-limb ROM may improve proper clean movement performance.
本研究旨在确定清洁运动（CPCM）抓举阶段的最佳上肢活动范围（ROM）特征，并确定 CrossFit 运动员进行 CPCM 的关键 ROM。
对 20 名年龄在 20-36 岁的 CrossFit 运动员进行前瞻性队列研究。收集年龄、人体测量学、CrossFit 训练经验和上肢 ROM 等数据。ROM 使用 ROM-SPORT 方法进行测量。7 个月后，运动员以 80%一次重复最大负荷进行清洁运动。进行贝叶斯学生 t 检验、二项逻辑回归分析和接收者操作特征分析。
预测正确 CPCM 表现的最佳上肢 ROM 特征是：肩部伸展 78°、肩部屈曲 173°、肩部外旋 107°、肩部内旋 89°、肘部屈曲 153°、肘部旋前 99°和腕部伸展 92°（曲线下面积≥651；阳性预测值≥80%）。肩部外旋、肘部旋前和腕部伸展是 CPCM 高效安全表现的最重要 ROM（曲线下面积≥854；阳性预测值≥85.7%）。
上肢 ROM 特征与正确的清洁表现有关。需要进一步研究以确定改善上肢 ROM 的柔韧性是否可以提高正确的清洁运动表现。
