中老年女性动态平衡能力与下肢肌肉力量的关系研究

Research on the Relationship between Dynamic Balance and Lower Extremity Muscle Strength of Middle-aged Women

目的;探索中老年女性的动态平衡能力与下肢肌肉力量之间的关系。方法:本研究招募了55-65岁中老年女性50名,使用数字化手持测力计对受试者的下肢最大肌肉力量(髋关节伸肌肌群、屈肌肌群和外展肌群,膝关节伸肌肌群、屈肌肌群和踝关节背屈肌群)进行测试,同时利用Y平衡测试仪对前侧、后中侧和后外侧3个方向上的伸展距离进行测试,使用Pearson相关分析法来量化Y平衡测试的伸展距离与下肢肌肉力量之间的线性关系。结果:髋关节伸肌力量和膝关节屈肌力量与Y平衡测试前侧方向的伸展距离呈现正相关关系;髋关节伸肌力量、髋关节外展肌力量和膝关节屈肌力量与Y平衡测试后中侧方向的伸展距离呈现正相关关系;髋关节伸肌力量和膝关节屈肌力量与Y平衡测试后外侧方向的伸展距离呈现正相关关系。结论:中老年女性的动态平衡能力与下肢肌肉力量高度相关。

Purpose:The purpose of this study was to explore the relationship between dynamic balance and lower extremity muscle strength of middle-aged women.Methods:Fifty middle-aged women aged 55 to 65 years were recruited for this study.The subjects were tested by digital handheld dynamometer for maximal muscle strength of the lower limbs(hip extensors,hip flexors,hip abductors,knee extensors,knee flexors,and ankle dorsiflexors) and tested by Y-balance test for stretching distances in the anterior,posteromedial,and Posterolateral directions.Pearson's correlation coefficient was used to quantify the linear relationships between stretching distances of Y-balance test and lower-limb strength.Results:Hip extensor and knee flexor strength were positively correlated with anterior stretching distance of Y-balance test.Hip extensor,hip abductor,and knee flexor strength were positively correlated with posteromedial stretching distance of Y-balance test.Hip extensor and knee flexor strength were positively correlated with posterolateral stretching distance of Y-balance test distance.Conclusions:There was a close correlation between lower-limb strength and dynamic balance of middle-aged women.