Rogan Slavko, Radlinger Lorenz, Hilfiker Roger, Schmidtbleicher Dietmar, de Bie Rob A, de Bruin Eling D
Bern University of Applied Sciences, Health, Bern, Switzerland.
Department of Epidemiology, Maastricht University, CAPHRI School for Public Health and Primary Care, Maastricht, The Netherlands.
BMC Geriatr. 2015 Mar 12;15:25. doi: 10.1186/s12877-015-0021-4.
Aging is associated with loss of balance and activity in daily life. It impacts postural control and increases the risk of falls. The current study was conducted to determine the feasibility and long-term impact of stochastic resonance whole-body vibration (SR-WBV) on static and dynamic balance and reaction time among elderly individuals.
A randomized crossover pilot study with blinding of the participants. Twenty elderly were divided into group A (SR-WBV 5 Hz, Noise 4/SR-WBV 1 Hz, Noise 1) or group B (SR-WBV 1 Hz, Noise 1/SR-WBV 5 Hz, Noise 1). Feasibility outcomes included recruitment, compliance and safety. Secondary outcomes were Semi-Tandem Stand (STS), Functional Reach Test (FRT), Expanded Timed Get Up-and-Go (ETGUG), walking under single (ST) & dual task (DT) conditions, hand and foot reaction time (RTH/RTF). Puri and Sen Rank-Order L Statistics were used to analyse carry-over effects. To analyse SR-WBV effects Wilcoxon signed-ranked tests were used.
With good recruitment rate (55%) and compliance (attrition 15%; adherence 85%) rates the intervention was deemed feasible. Three participants dropped out, two due to knee pain and one for personal reasons. ETGUG 0 to 2 m (p = 0.143; ES: 0.36) and ETGUG total time (p = 0.097; ES: 0.40) showed medium effect sizes.
Stochastic resonance training is feasible in untrained elderly resulting in good recruitment and compliance. Low volume SR-WBV exercises over 12 training sessions with 5 Hz, Noise 4 seems a sufficient stimulus to improve ETGUG total time. The stimulation did not elicit changes in other outcomes.
This trial has been registered at the U.S. National Institutes of Health under ClinicalTrials.gov: NCT01045746.
衰老与日常生活中平衡能力和活动能力的丧失有关。它会影响姿势控制并增加跌倒风险。本研究旨在确定随机共振全身振动（SR-WBV）对老年人静态和动态平衡及反应时间的可行性和长期影响。
一项对参与者进行盲法的随机交叉试点研究。20名老年人被分为A组（SR-WBV 5赫兹，噪声4/SR-WBV 1赫兹，噪声1）或B组（SR-WBV 1赫兹，噪声1/SR-WBV 5赫兹，噪声1）。可行性结果包括招募、依从性和安全性。次要结果包括半串联站立（STS）、功能性伸展测试（FRT）、扩展定时起立行走测试（ETGUG）、单任务（ST）和双任务（DT）条件下的行走、手和脚的反应时间（RTH/RTF）。使用Puri和Sen等级顺序L统计量分析遗留效应。为了分析SR-WBV的效果，使用了Wilcoxon符号秩检验。
由于招募率良好（55%）和依从率（损耗率15%；坚持率85%），该干预被认为是可行的。三名参与者退出，两名因膝盖疼痛，一名因个人原因。ETGUG 0至2米（p = 0.143；效应量：0.36）和ETGUG总时间（p = 0.097；效应量：0.40）显示出中等效应量。
随机共振训练在未经训练的老年人中是可行的，能带来良好的招募和依从性。在12次训练中进行低强度的SR-WBV训练，频率为5赫兹，噪声为4，似乎是改善ETGUG总时间的充分刺激。该刺激未引起其他结果的变化。
本试验已在美国国立卫生研究院的ClinicalTrials.gov上注册：NCT01045746。
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