Cosendey Killian, Mongold Scott, Petieau Mathieu, Cheron Guy, Cebolla Ana-Maria
Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles, Brussels, Belgium.
Laboratory of Neuroscience, Université de Mons, Mons, Belgium.
Front Psychol. 2023 Jul 31;14:1199448. doi: 10.3389/fpsyg.2023.1199448. eCollection 2023.
To investigate kinematic and muscle activity differences during the sleep-push movement in elite field hockey players. We hypothesized that players with specialized sleep-push movement training (specialists) would possess a lower center of mass (CoM) and enhanced reproducibility of muscle activations during the movement, compared to players without explicit movement training (non-specialists).
Ten field hockey players of the Belgian national field hockey team performed the sleep-push movement (5 specialists and 5 non-specialists). Muscle activity and kinematic data were recorded using EMG to evaluate the reproducibility of muscle activations by cross-correlation analysis and power spectral features across the movement, while a motion capture system was used to assess kinematics.
Compared to non-specialists, specialists had significantly ( < 0.05) increased stick velocity (9.17 ± 1.28 m/s versus 6.98 ± 0.97 m/s) and lower CoM height (141 ± 52 mm versus 296 ± 64 mm), during the second part of the shot. Specialists also showed a significant ( < 0.05) lower power spectrum in the activity of the upper limb muscles before the shot. Superimposition of the auto crosscorrelation results demonstrated a high degree of reproducibility in specialists' muscle activations.
Sleep-push movements realized by elite players who are specialists in the sleep-push movement presented significant kinematics and muscular activation differences when compared to the sleep-push movements realized by elite players who were not specialists in such movement. Characterization of the specific movement and the related high-level performer's muscular strategies offers the possibility of translating sport science findings into functional training with concrete applications for coaches, players, and other key stakeholders for the continued development of the field.
研究精英曲棍球运动员在睡眠推射动作过程中的运动学和肌肉活动差异。我们假设，与没有进行明确动作训练的运动员（非专业人员）相比，接受过专门睡眠推射动作训练的运动员（专业人员）在运动过程中会有更低的重心（CoM）以及更高的肌肉激活再现性。
比利时国家曲棍球队的10名曲棍球运动员进行睡眠推射动作（5名专业人员和5名非专业人员）。使用肌电图（EMG）记录肌肉活动和运动学数据，通过互相关分析和整个动作过程的功率谱特征来评估肌肉激活的再现性，同时使用运动捕捉系统评估运动学。
与非专业人员相比，在射门的第二阶段，专业人员的球杆速度显著提高（9.17±1.28米/秒对6.98±0.97米/秒），重心高度更低（141±52毫米对296±64毫米）（<0.05）。专业人员在射门之前上肢肌肉活动的功率谱也显著更低（<0.05）。自互相关结果的叠加显示专业人员的肌肉激活具有高度再现性。
与未专门进行该动作训练的精英运动员所完成的睡眠推射动作相比，专门进行睡眠推射动作训练的精英运动员所完成的睡眠推射动作在运动学和肌肉激活方面存在显著差异。对特定动作及其相关的高水平运动员的肌肉策略进行特征描述，为将运动科学研究成果转化为功能性训练提供了可能，这对于教练、运动员和该领域持续发展的其他关键利益相关者具有具体应用价值。
