Tao Hanz, Husher Anthony, Schneider Zachary, Strand Scott, Ness Brandon
Department of Physical Therapy, University of South Dakota, Vermillion, SD, USA.
Int J Sports Phys Ther. 2020 Oct;15(5):712-721. doi: 10.26603/ijspt20200712.
Impaired balance and strength commonly affect athletes with conditions like chronic ankle instability (CAI). Yet, clinical research surrounding the relationship between balance, strength, and CAI is still growing. Deeper investigation of these relationships is warranted to better inform clinical practice patterns when managing athletes with balance deficits.
To investigate the relationship between single leg balance, ankle strength, and hip strength in healthy, active adults.
Observational study.
Forty healthy participants (age 23.7 ± 4.9 years) were assessed for static balance, using a modified version of the Balance Error Scoring System (mBESS), as well as isometric strength of ankle and hip musculature via handheld dynamometry. Pearson's correlations were used to analyze relationships between balance and strength measures. Paired t-tests were utilized to compare dominant and non-dominant limb performance.
Negligible to low, negative correlations were found between balance scores and hip extension strength ( = -0.24 to -0.38, p<0.05). High, positive correlations were found between ankle and hip strength measures ( = 0.75 to 0.84, p<0.05). When comparing dominant to non-dominant limbs, only minimal differences were noted in ankle eversion strength (mean difference = 6.0%, p<0.01) and hip extension strength (mean difference = 5.5%, p<0.01).
Minimal relationships were identified between static balance and isometric ankle and hip strength. Comparison of dominant and non-dominant limbs suggests that clinicians should expect relative symmetry in balance and strength in healthy adults. Thus, asymmetries found during clinical examination should raise suspicion of specific impairments that may lead to dysfunction.
2c.
平衡能力和力量受损通常会影响患有慢性踝关节不稳（CAI）等疾病的运动员。然而，围绕平衡、力量与CAI之间关系的临床研究仍在不断发展。有必要对这些关系进行更深入的研究，以便在管理有平衡缺陷的运动员时更好地指导临床实践模式。
研究健康、活跃成年人单腿平衡、踝关节力量和髋关节力量之间的关系。
观察性研究。
对40名健康参与者（年龄23.7±4.9岁）进行评估，使用改良版平衡误差评分系统（mBESS）评估静态平衡，并通过手持测力计评估踝关节和髋关节肌肉的等长力量。采用Pearson相关性分析平衡和力量测量之间的关系。使用配对t检验比较优势侧和非优势侧肢体的表现。
平衡分数与髋关节伸展力量之间存在可忽略到低的负相关性（r=-0.24至-0.38，p<0.05）。踝关节和髋关节力量测量之间存在高的正相关性（r=0.75至0.84，p<0.05）。当比较优势侧和非优势侧肢体时，仅在踝关节外翻力量（平均差异=6.0%，p<0.01）和髋关节伸展力量（平均差异=5.5%，p<0.01）方面发现了极小的差异。
静态平衡与踝关节和髋关节等长力量之间的关系极小。优势侧和非优势侧肢体的比较表明，临床医生应预期健康成年人在平衡和力量方面具有相对对称性。因此，在临床检查中发现的不对称性应引起对可能导致功能障碍的特定损伤的怀疑。
2c。
