肌肉力量和视觉对比敏感度对跌倒风险摆动速度指数的影响。
The Effect of Muscle Strength and Visual Contrast Sensitivity on Fall Risk Sway Velocity Index.
作者信息
Hackney Kyle J, Bradley Miranda L, Mahoney Sean, Johnson Nathaniel R, Kotarsky Christopher J, Bradley Adam P, Stastny Sherri N, McGrath Ryan, McCourt Mark E
机构信息
Department of Health, Nutrition, and Exercise Sciences, North Dakota State University, Fargo, North Dakota, USA.
Department of Nutrition and Dietetics, University of North Dakota, Grand Forks, North Dakota, USA.
出版信息
J Frailty Sarcopenia Falls. 2025 Jun 1;10(2):54-61. doi: 10.22540/JFSF-10-054. eCollection 2025 Jun.
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, <0.001) and visual contrast sensitivity (R=-0.63, <0.001) were both negatively correlated with age, while fall risk scores were positively correlated with age (R=0.34, =0.001). The interaction between muscle strength and visual contrast sensitivity was a significant predictor of fall risk scores (t=2.420, =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, =0.045).
CONCLUSION
Lower levels of lower body muscle strength combined with lower visual contrast sensitivity interact to negatively influence fall risk.
目的
本研究旨在探讨跌倒风险评分是否受肌肉力量与视觉对比敏感度之间相互作用的影响。
方法
91名年龄在19 - 79岁之间的个体完成了膝关节伸展力量、视觉对比敏感度和跌倒风险的评估。结合方差分析完成相关性和调节分析。数据被分为四组：1）较高力量 - 较高视觉对比敏感度；2）较高力量 - 较低视觉对比敏感度；3）较低力量 - 较高视觉对比敏感度；4）较低力量 - 较低视觉对比敏感度。
结果
相对于体重的峰值扭矩表示的膝关节伸展力量（R = -0.57，<0.001）和视觉对比敏感度（R = -0.63，<0.001）均与年龄呈负相关，而跌倒风险评分与年龄呈正相关（R = 0.34，=0.001）。在控制年龄的情况下，肌肉力量与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素（t = 2.420，=0.018）。与较高力量 - 较高视觉对比敏感度（11.53±1.75，=0.045）相比，表现出较低力量 - 较低对比敏感度（12.96±1.93）的参与者跌倒风险评分显著更差。
结论
较低的下肢肌肉力量水平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。
Zotero 插件