Effect of Local Vibration and Thoracolumbar Orthosis on Thoracic Kyphosis Angle and Trunk Flexor and Extensor Muscles in Older Adults With Hyperkyphosis: A Randomized Control Trial

IF 2.1 Q2 MEDICINE, GENERAL & INTERNAL

Health Science Reports Pub Date : 2025-07-16 DOI:10.1002/hsr2.71051

Fatemeh Keshavarzi, Mokhtar Arazpour, Iraj Abdollahi, Akbar Biglarian, Saeed Behzadipour

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Abstract

Background and Aims

Adding a local vibration system to a semirigid thoracolumbar orthosis may improve the effectiveness of the orthosis on muscle function in seniors with age-related hyperkyphosis.

Methods

This study was a parallel two-arm randomized controlled trial. Eighteen seniors with age-related hyperkyphosis were randomized into the conventional semi-rigid thoracolumbar orthosis group (control group) or the conventional semi-rigid thoracolumbar orthosis plus local vibration (intervention group); from June 10, 2023 to December 21, 2023. The outcomes included the thoracic kyphosis angle (TKA), parameters of isometric, isotonic, and isokinetic trunk muscle function; the SF-36 questionnaire; the 2-min walk test (2 MW); the 10-m walk test (10 MW); and the timed up and go test (TUG). Dependent variables were compared between groups across three time points using mixed-model ANOVA. One-way repeated-measures ANOVA was applied for significant time interactions.

Results

After 6 weeks, the TKA significantly improved (p = 0.001) in both groups and showed more reduction in the intervention group (p = 0.001). The average torque of the trunk isometric extensor (p = 0.005) and flexor (p = 0.027) significantly improved in both groups. The average power of the isotonic extensors (p = 0.018) and flexors (p = 0.024) improved significantly. Isokinetic work for extensors (p = 0.030), flexors (p = 0.021) and average power (p = 0.017) increased.

Conclusion

TKA significantly improved after 6 weeks of intervention. This improvement was significantly more in the intervention group. Adding local vibration may improve the isotonic and isokinetic torques and time parameters but not the isometric parameters of the trunk muscles.

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局部振动和胸腰椎矫形对老年后凸过度患者胸后凸角和躯干屈伸肌的影响：一项随机对照试验

背景与目的在半刚性胸腰椎矫形器中加入局部振动系统，可以改善老年老年性后凸过度患者的肌肉功能。方法采用平行、双组随机对照试验。将18例老年老年性后凸症患者随机分为常规半刚性胸腰椎矫形器组（对照组）和常规半刚性胸腰椎矫形器加局部振动组（干预组）；从2023年6月10日到2023年12月21日结果包括胸后凸角（TKA）、躯干肌肉功能等张力、等张力和等速参数；SF-36问卷；2分钟步行试验（2 MW）；10米行走试验（10兆瓦）；和计时测试（TUG）。使用混合模型方差分析比较三个时间点组间的因变量。单向重复测量方差分析用于显著的时间相互作用。结果6周后，两组患者TKA均有显著改善（p = 0.001），干预组患者TKA降低幅度更大（p = 0.001）。两组躯干等距伸肌（p = 0.005）和屈肌（p = 0.027）的平均扭矩均显著改善。等张伸肌（p = 0.018）和屈肌（p = 0.024）的平均力量显著提高。伸肌（p = 0.030）、屈肌（p = 0.021）和平均力量（p = 0.017）的等速功增加。结论干预6周后TKA明显改善。这种改善在干预组中更为明显。加入局部振动可以改善躯干肌肉的等压和等速扭矩和时间参数，但不能改善躯干肌肉的等距参数。

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