肌力和视觉对比敏感度对跌倒危险摇摆速度指数的影响。

Kyle J Hackney, Miranda L Bradley, Sean Mahoney, Nathaniel R Johnson, Christopher J Kotarsky, Adam P Bradley, Sherri N Stastny, Ryan McGrath, Mark E McCourt
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引用次数: 0

摘要

目的:本研究的目的是检查跌倒风险评分是否受到肌肉力量和视觉对比敏感度之间的相互作用的影响。方法:91名年龄19-79岁的患者完成了膝关节伸展强度、视觉对比敏感度和跌倒风险的评估。结合方差分析进行相关性分析和调节性分析。数据分为:1)高强度-高视觉对比敏感度组,2)高强度-低视觉对比敏感度组;3)低强度-高视觉对比敏感度;4)低强度-低视觉对比敏感度。结果:膝关节伸展强度通过相对于身体质量的峰值扭矩(R= -0.57, PPP=0.001)。在控制年龄的情况下,肌肉力量和视觉对比敏感度之间的相互作用是跌倒风险评分的显著预测因子(t=2.420, P=0.018)。较低强度-较低对比敏感度的受试者(12.96±1.93)与较高强度-较高视觉对比敏感度的受试者(11.53±1.75,P=0.045)相比,跌倒风险评分明显较差。结论:较低的下体肌肉力量与较低的视觉对比敏感度相互作用,对跌倒风险产生负面影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Effect of Muscle Strength and Visual Contrast Sensitivity on Fall Risk Sway Velocity Index.

Objectives: The purpose of this study was to examine if fall risk scores were affected by the interaction between muscle strength and visual contrast sensitivity.

Methods: Ninety-one individuals aged 19-79 years completed assessments of knee extension strength, visual contrast sensitivity, and fall risk. Correlations and moderation analysis were completed in combination with analysis of variance. Data were categorized into groups: 1) higher strength-higher visual contrast sensitivity, 2) higher strength-lower visual contrast sensitivity; 3) lower strength- higher visual contrast sensitivity, and 4) lower strength-lower visual contrast sensitivity.

Results: Knee extension strength via peak torque relative to body mass (R= -0.57, P<0.001) and visual contrast sensitivity (R=-0.63, P<0.001) were both negatively correlated with age, while fall risk scores were positively correlated with age (R=0.34, P=0.001). The interaction between muscle strength and visual contrast sensitivity was a significant predictor of fall risk scores (t=2.420, P=0.018) when controlling for age. Participants exhibiting lower strength-lower contrast sensitivity (12.96 ± 1.93) had significantly worse fall risk scores compared to higher strength-higher visual contrast sensitivity (11.53 ± 1.75, P=0.045).

Conclusion: Lower levels of lower body muscle strength combined with lower visual contrast sensitivity interact to negatively influence fall risk.

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