矢状面和额状面髋关节肌肉向心等速峰值扭矩及主动肌-拮抗肌比率的位置和性别差异
Position- and Sex-Related Differences in Sagittal and Frontal Plane Concentric Isokinetic Hip Muscle Peak Torques and Agonist-Antagonist Ratios.
作者信息
Hoglund Lisa T, Schiffino Matthew C, Freels James E, Romano Isabella G
机构信息
Physical Therapy Thomas Jefferson University.
Aurora, Colorado Orthopedic Centers of Colorado.
出版信息
Int J Sports Phys Ther. 2024 Nov 2;19(11):1407-1416. doi: 10.26603/001c.124117. eCollection 2024.
BACKGROUND
Hip muscle weakness is associated with many musculoskeletal conditions and athletic injuries. Isokinetic testing is often performed to measure a patient's strength or to assess treatment response. Patient sex and positioning during isokinetic strength testing may influence peak torque production and the agonist-antagonist peak torque ratios. However, different test positions are used clinically and in research to measure hip muscle strength. It is unknown how patient test position or sex impacts test results.
HYPOTHESIS/PURPOSE: The purpose of this study was to determine whether concentric isokinetic peak torques of sagittal and frontal plane hip muscles differ when tested in recumbent versus standing positions and if results were impacted by patient sex.
STUDY DESIGN
Cross-sectional observational.
METHODS
Forty healthy adults (20 male, 20 female) participated. Concentric isokinetic hip torques of the hip flexors, extensors, abductors, and adductors were measured with participants in two positions (recumbent versus standing; 60°/second angular velocity). Peak torque values were normalized by body mass and height. Data were analyzed with mixed-model ANOVAs (sex x position). Effect sizes were examined using partial eta squared.
RESULTS
No significant interactions or main effects for sex were found. Significant main effects for position were found for hip extensor and abductor peak torques and for hip flexor-extensor ratio. Hip extensor peak torque was greater when tested supine versus standing with a large effect size (=.02, effect size =.14). Hip abductor peak torque was greater when tested sidelying versus standing with a medium effect size (=.03, effect size =.12). Hip flexor-extensor agonist-antagonist ratio was greater when tested standing versus supine with a large effect size (<.001, effect size =.27).
CONCLUSION
Hip extensor and abductor concentric isokinetic peak torques were greater when tested in recumbent versus standing positions. In contrast, hip flexor-extensor ratio was greater when tested in standing versus supine.
LEVEL OF EVIDENCE
背景
髋部肌肉无力与多种肌肉骨骼疾病和运动损伤相关。等速测试常用于测量患者的力量或评估治疗反应。等速力量测试过程中患者的性别和体位可能会影响峰值扭矩产生以及主动肌与拮抗肌的峰值扭矩比。然而，临床和研究中使用不同的测试体位来测量髋部肌肉力量。目前尚不清楚患者的测试体位或性别如何影响测试结果。
假设/目的：本研究的目的是确定在仰卧位与站立位测试时，矢状面和额状面髋部肌肉的同心等速峰值扭矩是否存在差异，以及结果是否受患者性别的影响。
研究设计
横断面观察性研究。
方法
40名健康成年人（20名男性，20名女性）参与研究。在两个体位（仰卧位与站立位；角速度60°/秒）下测量髋部屈肌、伸肌、外展肌和内收肌的同心等速髋部扭矩。峰值扭矩值通过体重和身高进行标准化。采用混合模型方差分析（性别×体位）对数据进行分析。使用偏η²检验效应量。
结果
未发现性别存在显著交互作用或主效应。发现体位对髋部伸肌和外展肌峰值扭矩以及髋部屈肌-伸肌比值存在显著主效应。仰卧位测试时髋部伸肌峰值扭矩大于站立位，效应量较大（P =.02，效应量 =.14）。侧卧位测试时髋部外展肌峰值扭矩大于站立位，效应量中等（P =.03，效应量 =.12）。站立位测试时髋部屈肌-伸肌主动肌与拮抗肌比值大于仰卧位，效应量较大（P <.001，效应量 =.27）。
结论
仰卧位测试时髋部伸肌和外展肌的同心等速峰值扭矩大于站立位测试时。相反，站立位测试时髋部屈肌-伸肌比值大于仰卧位测试时。
证据水平
3级
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