个性化技术反馈可即时改善技术并减少膝关节外展力矩--治疗 "侧滑 "前交叉韧带损伤的新方法?

IF 1.6 Q3 SPORT SCIENCES
International Journal of Sports Physical Therapy Pub Date : 2024-05-01 eCollection Date: 2024-01-01 DOI:10.26603/001c.116274
Kevin Bill, Patrick Mai, Lasse Mausehund, Sigurd Solbakken, Tron Krosshaug, Uwe G Kersting
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引用次数: 0

摘要

背景:侧步切削技术是高度个性化的,已被证明会影响膝关节负荷。目的:确定在手球特定侧步切入中,个性化增强技术反馈和指导对技术和膝关节外展力矩峰值(pKAM)的即时影响。此外,确定技术修改对地面反作用力结果及其对膝关节中心的额面力矩臂的影响:研究设计:受控实验室队列研究:方法:记录 48 名青少年女子手球运动员在进行手球特定侧步切入时的三维生物力学。在对每侧进行基线切入后,针对脚掌击球角度、膝关节外翻运动或垂直冲击速度提供视觉和口头技术反馈,并采用分层组织结构,说明变量与成绩的关系。随后,再次进行侧步切入,同时提供口头指导以指导技术修改。评估了反馈和指导对技术和 pKAM 以及对由此产生的地面反作用力及其对膝关节中心的额面力矩臂的综合影响:平均而言,每个目标技术变量在反馈和指导后都有所改善,从而使 pKAM 立即降低了 13.4% 至 17.1%。个体间对反馈和指导组合的反应差异很大。这些差异既体现在对指令的坚持上,也体现在对 pKAM 及其组成部分的影响上:结论:通过个性化的增强技术反馈,大多数球员都能立即调整自己的技术,减少与前十字韧带损伤相关的膝关节负荷,从而降低受伤风险。需要开展更多研究,以评估这些适应性的保持情况,并利用低成本设备进行场上技术评估:证据等级:3 级。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Individualized Technique Feedback for Instant Technique Improvements and Knee Abduction Moment Reductions - A New Approach for 'Sidestepping' ACL Injuries?

Background: Sidestep cutting technique is highly individual and has been shown to influence knee joint loading. However, studies assessing whether individualized technique feedback improves technique and ACL injury-relevant knee joint loads instantly in a sport-specific task are lacking.

Purpose: To determine the instant effects of individualized augmented technique feedback and instructions on technique and the peak external knee abduction moment (pKAM) in a handball-specific sidestep cut. Additionally, to determine the effects of technique modifications on the resultant ground reaction force and its frontal plane moment arm to the knee joint center.

Study design: Controlled laboratory cohort study.

Methods: Three-dimensional biomechanics of 48 adolescent female handball players were recorded during a handball-specific sidestep cut. Following baseline cuts to each side, leg-specific visual and verbal technique feedback on foot strike angle, knee valgus motion, or vertical impact velocity using a hierarchically organized structure accounting for the variables' association with performance was provided. Subsequently, sidestep cuts were performed again while verbal instructions were provided to guide technique modifications. Combined effects of feedback and instructions on technique and pKAM as well as on the resultant ground reaction force and its frontal plane moment arm to the knee joint center were assessed.

Results: On average, each targeted technique variable improved following feedback and instructions, leading to instant reductions in pKAM of 13.4% to 17.1%. High inter-individual differences in response to feedback-instruction combinations were observed. These differences were evident in both the adherence to instructions and the impact on pKAM and its components.

Conclusion: Most players were able to instantly adapt their technique and decrease ACL injury-relevant knee joint loads through individualized augmented technique feedback, thereby potentially reducing the risk of injury. More research is needed to assess the retention of these adaptations and move towards on-field technique assessments using low-cost equipment.

Level of evidence: Level 3.

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来源期刊
CiteScore
2.50
自引率
5.90%
发文量
124
审稿时长
16 weeks
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