Abdelkader Nader, Brown Stephen H M, Beach Tyson A C, Howarth Samuel J
Division of Research and Innovation, Canadian Memorial Chiropractic College.
Department of Human Health and Nutritional Sciences, University of Guelph.
Int J Sports Phys Ther. 2021 Dec 2;16(6):1426-1433. doi: 10.26603/001c.29852. eCollection 2021.
Few studies have quantified dynamic balance in fencers despite previous suggestions that balance training may be beneficial for these athletes. Generally, asymmetry in dynamic balance performance between the left and right legs can be an indicator of lower extremity injury risk and used to monitor rehabilitation progress. Fencing is recognized as an asymmetric sport, therefore, differences in dynamic balance may exist among uninjured athletes.
HYPOTHESIS/PURPOSE: The primary objective of this investigation was to evaluate whether asymmetry of dynamic balance is present in uninjured national-level fencers. It was hypothesized that elite uninjured fencers would demonstrate superior dynamic balance on the lead-leg of their fencing stance. A secondary objective was to compare dynamic balance performance of elite fencers to previously published data from high-level athletes participating in other sports.
Descriptive Laboratory Study.
Fourteen uninjured elite competitive fencers were recruited. Subjects self-reported the lead leg of their fencing stance. Each participant performed the Y-Balance test (YBT), which represented a measurement of dynamic balance control, on both legs. Reach distances were recorded directly from a commercially available YBT apparatus. Four reach distances were recorded: anterior, posteromedial, posterolateral, and a composite measure was calculated. Distances were leg length-normalized and expressed as a percentage. Sample averages and standard deviations were derived for the four YBT measurements.
There were no significant differences in reaching distance between the lead and trail legs in any of the four YBT measures (p ≥ 0.65). Fencers appeared to demonstrate larger normalized reach distances in the posterolateral and posteromedial directions than other athletes.
The results of this study indicate that dynamic balance is not significantly different between the lead and trail legs in elite fencers, despite the asymmetrical nature of their sport. The apparent symmetry of dynamic balance control in uninjured fencers means that the YBT could be used in this population for monitoring progress during training and rehabilitation.
2b.
尽管此前有观点认为平衡训练可能对击剑运动员有益，但很少有研究对击剑运动员的动态平衡进行量化。一般来说，左右腿动态平衡表现的不对称可能是下肢受伤风险的一个指标，并可用于监测康复进展。击剑是一项公认的不对称运动，因此，未受伤的运动员之间可能存在动态平衡差异。
假设/目的：本研究的主要目的是评估未受伤的国家级击剑运动员是否存在动态平衡不对称。研究假设是，未受伤的精英击剑运动员在击剑姿势的主导腿上会表现出更好的动态平衡。次要目的是将精英击剑运动员的动态平衡表现与之前发表的其他高水平运动员的数据进行比较。
描述性实验室研究。
招募了14名未受伤的精英竞技击剑运动员。受试者自行报告其击剑姿势的主导腿。每位参与者在双腿上都进行了Y平衡测试（YBT），该测试代表了对动态平衡控制的测量。直接从市售的YBT仪器上记录伸展距离。记录了四个伸展距离：前向、后内侧、后外侧，并计算了一个综合测量值。距离进行了腿长标准化，并表示为百分比。得出了四个YBT测量值的样本平均值和标准差。
在四个YBT测量中的任何一个中，主导腿和非主导腿之间的伸展距离均无显著差异（p≥0.65）。击剑运动员在后外侧和后内侧方向上的标准化伸展距离似乎比其他运动员更大。
本研究结果表明，尽管击剑运动具有不对称性，但精英击剑运动员主导腿和非主导腿之间的动态平衡没有显著差异。未受伤击剑运动员动态平衡控制的明显对称性意味着YBT可用于该人群，以监测训练和康复过程中的进展。
2b。
