Role of Thigh Muscle Strength and Joint Kinematics in Dynamic Stability: Implications for Y-Balance Test Performance.

IF 1.3 4区 医学 Q3 REHABILITATION
Journal of Sport Rehabilitation Pub Date : 2024-08-28 Print Date: 2024-11-01 DOI:10.1123/jsr.2024-0081
Jeffrey A Turner, Matthew L Hartshorne, Darin A Padua
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引用次数: 0

Abstract

Context: The Y-Balance Test Lower Quarter (YBT-LQ) is a widely utilized tool for evaluating dynamic postural control, requiring a combination of mobility and strength. This study aimed to investigate the combined relationship between isometric thigh muscle strength and joint kinematics on YBT-LQ performance.

Design: Cross-sectional laboratory study.

Methods: Isometric quadriceps and hamstrings strength were measured before the YBT-LQ in 39 healthy participants (27 females and 12 males). The test was performed under 3-dimensional markerless motion capture, where joint kinematics were extracted from the maximum reach position from each direction. Three multivariable linear regression models were then used to determine the strongest combination of predictors for YBT-LQ performance.

Results: Greater hamstrings strength and increased knee flexion, ankle dorsiflexion, and trunk ipsilateral-flexion joint angles explained 56.8% (P < .001) of the variance in anterior reach. Hip flexion, knee flexion, and ankle dorsiflexion angles were the strongest predictors for posteromedial reach distance, explaining 73.0% of the variance (P < .001). Last, 43.3% (P < .001) of the variance in posterolateral reach distance was predicted by hamstring strength and knee-flexion angle.

Conclusions: These results emphasize the importance of hamstring strength in YBT-LQ performance across different reach directions. Additionally, the kinematics illustrate a potential movement strategy for maximizing reach distance on the YBT-LQ in healthy individuals. Clinicians can utilize this information to guide interventions aimed at improving dynamic postural control, particularly by focusing on increasing hamstring strength and testing for impairments in specific movement patterns.

大腿肌肉力量和关节运动学在动态稳定性中的作用:对 Y 平衡测试成绩的影响
背景Y-Balance Test Lower Quarter (YBT-LQ)是一种广泛用于评估动态姿势控制的工具,需要结合活动度和力量。本研究旨在调查等长大腿肌肉力量和关节运动学对 YBT-LQ 成绩的综合影响:设计:横断面实验室研究:方法:在进行 YBT-LQ 之前,测量 39 名健康参与者(27 名女性和 12 名男性)的等长股四头肌和腿肌力量。测试在三维无标记运动捕捉下进行,从每个方向的最大伸展位置提取关节运动学数据。然后使用三个多变量线性回归模型来确定 YBT-LQ 成绩的最强预测因子组合:结果:腘绳肌力量的增强以及膝关节屈曲、踝关节背屈和躯干同侧屈关节角度的增加可解释前伸距变异的 56.8%(P < .001)。髋关节屈曲、膝关节屈曲和踝关节背屈角度是后内侧伸展距离的最强预测因子,可解释 73.0% 的差异(P < .001)。最后,43.3%(P < .001)的后外侧伸展距离变异是由腘绳肌力量和膝关节屈伸角度预测的:这些结果强调了腘绳肌力量在不同伸展方向的 YBT-LQ 成绩中的重要性。此外,运动学说明了一种潜在的运动策略,可使健康人在 YBT-LQ 上的伸展距离最大化。临床医生可以利用这些信息来指导旨在改善动态姿势控制的干预措施,特别是通过重点增加腿筋力量和测试特定运动模式的损伤。
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来源期刊
Journal of Sport Rehabilitation
Journal of Sport Rehabilitation 医学-康复医学
CiteScore
3.20
自引率
5.90%
发文量
143
审稿时长
>12 weeks
期刊介绍: The Journal of Sport Rehabilitation (JSR) is your source for the latest peer-reviewed research in the field of sport rehabilitation. All members of the sports-medicine team will benefit from the wealth of important information in each issue. JSR is completely devoted to the rehabilitation of sport and exercise injuries, regardless of the age, gender, sport ability, level of fitness, or health status of the participant. JSR publishes peer-reviewed original research, systematic reviews/meta-analyses, critically appraised topics (CATs), case studies/series, and technical reports that directly affect the management and rehabilitation of injuries incurred during sport-related activities, irrespective of the individual’s age, gender, sport ability, level of fitness, or health status. The journal is intended to provide an international, multidisciplinary forum to serve the needs of all members of the sports medicine team, including athletic trainers/therapists, sport physical therapists/physiotherapists, sports medicine physicians, and other health care and medical professionals.
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