Ashtanga-Based Yoga Therapy Increases the Sensory Contribution to Postural Stability in Visually-Impaired Persons at Risk for Falls as Measured by the Wii Balance Board: A Pilot Randomized Controlled Trial.
Ashtanga-Based Yoga Therapy Increases the Sensory Contribution to Postural Stability in Visually-Impaired Persons at Risk for Falls as Measured by the Wii Balance Board: A Pilot Randomized Controlled Trial.
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DOI：
10.1371/journal.pone.0129646
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Dagnelie G
中科院分区：
文献类型：
--
作者：
Jeter PE;Haaz Moonaz S;Bittner AK;Dagnelie G
视力受损（VI）的人由于对有助于平衡的视觉感官输入造成不可修复的损害，因此福尔斯跌倒的风险更大。有针对性的训练可以通过加强其余的感觉系统来显著改善姿势稳定性。在这里，我们评估八支瑜伽瑜伽疗法（AYT）计划作为一种多感官行为干预，以发展VI姿势稳定性。一项随机、等待名单对照、单盲临床试验该试验于2012年10月至2013年12月进行。21名法定盲受试者被随机分配至为期8周的AYT项目组（n = 11，平均（SD）年龄= 55（17））或候补对照组（n = 10，平均（SD）年龄= 55（10））。AYT受试者在当地的瑜伽馆与教练一起进行一次小组练习，每周进行两次单独的家庭练习，共8周。受试者在基线和AYT 8周后完成结局测量。主要结局，绝对压力中心（COP），来自Wii平衡板（WBB），一种独立的姿势描记设备，在4种感觉条件下：坚硬表面，睁眼（EO）;坚硬表面，闭眼（EC）;泡沫表面，EO;和泡沫表面，EC。从COP测量值计算稳定指数（SI）以确定相对视觉（SIfirm，SIfoam）、体感（SIEO，SIEC）和前庭（SIV，即，FoamEC vs. FirmEO）的贡献。本研究不足以检测组间差异，因此通过每组内配对样本t检验评估前后变化的显著性。各组在基线时相当（所有p> 0.05）。在AYT组中，FoamEO（t（8）=-3.66，p = 0.01）和FoamEC（t（8）=-3.90，p = 0.01）条件下的绝对COP显著增加。相对体感SIEO（t（8）=-2.42，p =0.04）和SIEC（t（8）=-3.96，p =0.01）以及前庭SIV（t（8）=-2.47，p =0.04）对平衡的贡献显著增加。正如预期，从EO到EC条件未发现显著变化，表明VI中不存在视觉依赖性。对照组治疗前后无明显变化（均P> 0.05）。这些初步的结果建立了潜在的AYT训练，以发展其余的体感和前庭反应，用于优化姿势稳定性的VI人口。 www.ClinicalTrials.gov
Persons with visual impairment (VI) are at greater risk for falls due to irreparable damage to visual sensory input contributing to balance. Targeted training may significantly improve postural stability by strengthening the remaining sensory systems. Here, we evaluate the Ashtanga-based Yoga Therapy (AYT) program as a multi-sensory behavioral intervention to develop postural stability in VI. A randomized, waitlist-controlled, single-blind clinical trial The trial was conducted between October 2012 and December 2013. Twenty-one legally blind participants were randomized to an 8-week AYT program (n = 11, mean (SD) age = 55(17)) or waitlist control (n=10, mean (SD) age = 55(10)). AYT subjects convened for one group session at a local yoga studio with an instructor and two individual home-based practice sessions per week for a total of 8 weeks. Subjects completed outcome measures at baseline and post-8 weeks of AYT. The primary outcome, absolute Center of Pressure (COP), was derived from the Wii Balance Board (WBB), a standalone posturography device, in 4 sensory conditions: firm surface, eyes open (EO); firm surface, eyes closed (EC); foam surface, EO; and foam surface, EC. Stabilization Indices (SI) were computed from COP measures to determine the relative visual (SIfirm, SIfoam), somatosensory (SIEO, SIEC) and vestibular (SIV, i.e., FoamEC vs. FirmEO) contributions to balance. This study was not powered to detect between group differences, so significance of pre-post changes was assessed by paired samples t-tests within each group. Groups were equivalent at baseline (all p > 0.05). In the AYT group, absolute COP significantly increased in the FoamEO (t(8) = -3.66, p = 0.01) and FoamEC (t(8) = -3.90, p = 0.01) conditions. Relative somatosensory SIEO (t(8) = -2.42, p = 0.04) and SIEC (t(8) = -3.96, p = 0.01), and vestibular SIV (t(8) = -2.47, p = 0.04) contributions to balance increased significantly. As expected, no significant changes from EO to EC conditions were found indicating an absence of visual dependency in VI. No significant pre-post changes were observed in the control group (all p > 0.05). These preliminary results establish the potential for AYT training to develop the remaining somatosensory and vestibular responses used to optimize postural stability in a VI population. www.ClinicalTrials.gov NCT01366677
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