Are Changes in Thigh Muscle Concentric Strength Associated With Changes in Leg Function After a Youth Sport-Related Knee Injury?

IF 2.6 2区医学 Q1 SPORT SCIENCES

Sports Health-A Multidisciplinary Approach Pub Date : 2025-07-30 DOI:10.1177/19417381251352524

Justin M Losciale, Christina Y Le, Linda K Truong, Garrett S Bullock, Cameron J Mitchell, Michael A Hunt, Jackie L Whittaker

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引用次数: 0

Abstract

Background: Assess the association between changes in injured leg knee extension and flexion strength (peak torque) and self-reported and performance-based measures of leg function after a variety of youth sport-related, time-loss knee injuries.

Hypothesis: There will be a relationship between changes in knee muscle strength and changes in measures of leg function in youth after a sport-related knee injury.

Study design: Prospective cohort study.

Level of evidence: Level 2.

Methods: This was a secondary analysis of the Alberta Youth Prevention of Early Osteoarthritis (PrEOA) Cohort study (Edmonton) that included youth (11-19 years old) who had experienced a medical attention, time-loss, sport-related knee injury in the previous 4 months. Injured leg knee extensor and flexor concentric peak torque (isokinetic; 90 deg/s), triple hop distance, modified Y-balance test (YBT), and Knee injury and Osteoarthritis Outcome Score Sport subscale (KOOS_sport) were assessed at baseline (≤4 months postinjury) and 6 and 12 months later. Adjusted associations between 6- and 12-month change in strength and functional measures were assessed using multivariable regression (95% CI).

Results: Based on data from 106 participants (16.2 ± 1.8 years old), a 1 Nm increase in knee extensor strength (6-12 months) was associated with a 0.9 cm (95% CI, -0.5, 2.3) increase in hop distance. Similarly, every 1 Nm increase in knee flexor strength (6-12 months) was associated with a 0.3 cm (95% CI, -1.1, 1.7) increase in hop distance. Across other models, a 1 Nm increase in extensor or flexor strength was associated with a 0- to 0.3-point increase in KOOS_sport score.

Conclusion: There was minimal-to-no longitudinal relationship between changes in knee extensor or flexor strength and changes in triple hop or YBT performance, or self-reported function within the first year after a youth sport-related knee injury.

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青少年运动相关膝关节损伤后大腿肌肉同心力量的变化与腿部功能的变化有关吗？

背景：评估在各种青少年运动相关的、时间损失的膝关节损伤后，受伤的腿部膝关节伸展和屈曲强度（峰值扭矩）的变化与自我报告和基于表现的腿部功能测量之间的关系。假设：在运动相关的膝关节损伤后，青少年膝关节肌肉力量的变化与腿部功能测量的变化之间存在关系。研究设计：前瞻性队列研究。证据等级：二级。方法：这是对艾伯塔省青年早期骨关节炎预防（PrEOA）队列研究（埃德蒙顿）的二次分析，该研究包括在过去4个月内经历过医疗护理、时间损失和运动相关膝盖损伤的青年（11-19岁）。受伤腿部膝关节伸屈肌同心峰值扭矩(等速；90度/秒)、三跳距离、改良y -平衡试验（YBT）和膝关节损伤和骨关节炎结局评分运动亚量表（KOOSsport）分别在基线（损伤后≤4个月）和6个月和12个月后进行评估。使用多变量回归（95% CI）评估6个月和12个月强度变化和功能测量之间的调整相关性。结果：基于106名参与者（16.2±1.8岁）的数据，膝关节伸肌强度每增加1 Nm（6-12个月）与跳跃距离增加0.9 cm （95% CI, -0.5, 2.3）相关。同样，膝关节屈肌力量每增加1 Nm（6-12个月），跳跃距离增加0.3 cm （95% CI, -1.1, 1.7）。在其他模型中，伸肌或屈肌强度每增加1 Nm， KOOSsport评分就会增加0- 0.3分。结论：在青少年运动相关膝关节损伤后的第一年内，膝关节伸肌或屈肌力量的变化与三跳或YBT表现的变化或自我报告的功能之间存在极小至无纵向关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sports Health-A Multidisciplinary Approach Medicine-Orthopedics and Sports Medicine

CiteScore

6.90

自引率

9.10%

发文量

101

期刊介绍： Sports Health: A Multidisciplinary Approach is an indispensable resource for all medical professionals involved in the training and care of the competitive or recreational athlete, including primary care physicians, orthopaedic surgeons, physical therapists, athletic trainers and other medical and health care professionals. Published bimonthly, Sports Health is a collaborative publication from the American Orthopaedic Society for Sports Medicine (AOSSM), the American Medical Society for Sports Medicine (AMSSM), the National Athletic Trainers’ Association (NATA), and the Sports Physical Therapy Section (SPTS). The journal publishes review articles, original research articles, case studies, images, short updates, legal briefs, editorials, and letters to the editor. Topics include: -Sports Injury and Treatment -Care of the Athlete -Athlete Rehabilitation -Medical Issues in the Athlete -Surgical Techniques in Sports Medicine -Case Studies in Sports Medicine -Images in Sports Medicine -Legal Issues -Pediatric Athletes -General Sports Trauma -Sports Psychology