Effect of standing posture during whole body vibration training on muscle morphology and function in older adults: a randomised controlled trial.
Effect of standing posture during whole body vibration training on muscle morphology and function in older adults: a randomised controlled trial.
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DOI：
10.1186/1471-2318-10-74
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发表时间：
2010-10-15
期刊：
影响因子：
4.1
通讯作者：
Singh MA
中科院分区：
文献类型：
--
作者：
Mikhael M;Orr R;Amsen F;Greene D;Singh MA
全身振动（WBV）是一种新型的运动方式，可以改善肌肉骨骼功能。本研究旨在探讨低强度WBV训练中站立姿势对老年人肌肉功能和肌肉形态的影响。19名男性和女性（50-80岁）被招募到一项为期3个月的随机对照试验中，并被分配到三个组之一：屈曲膝关节的WBV（FK）、锁定膝关节的WBV（LK）或屈曲膝关节的假WBV（CON）。暴露是间歇性的（1分钟WBV：1分钟休息），持续20分钟，每周三次，持续13周。在基线和三个月时进行测量。主要结果包括上半身和下半身肌肉功能（力量，功率和速度）。次要结局为肌肉形态、平衡、习惯和最大步态速度、爬楼梯功率和椅子站立性能。16名受试者完成了研究。与LK相比，使用FK的WBV后上身收缩速度相对（%）显著改善（FK 16.0%，LK-7.6%，CON 4.7，p = 0.01）。与对照组相比，WBV后相对上身力量（LK 15.1%，p = 0.02; FK 12.1%，p = 0.04; CON 4.7%）显著增加。两种站立姿势的绝对（p = 0.05）和相对（p = 0.03）小腿力量均显著改善（LK 14.4%; FK 10.7%; CON 1.3%）。只有LK组与CON组在相对腿部力量增益方面存在显著差异（p = 0.02）。与其他组相比，使用LK进行WBV后，观察到小腿肌肉横截面积（LK 3.7 cm 2，FK 2.4 cm 2，CON 2.2 cm 2，p = 0.13）有潜在临床意义但无统计学显著性改善。未观察到WBV对任何功能性能测试的显著影响。我们的研究结果表明，WBV可能会提高肌肉力量和收缩速度在一些肌肉群在老年人。然而，假设的差异适应站立姿势（FK > LK）只观察到上身收缩速度，使建议有关这一规定的元素不确定。WBV对老年人肌肉骨骼健康的有效性、作用机制和长期可行性，值得在设计稳健、动力充足的未来研究中继续研究。ACTRN12609000353291。
Whole body vibration (WBV) is a novel modality of exercise shown to improve musculoskeletal function. This study aims to examine the effects of standing posture during low magnitude WBV training on muscle function and muscle morphology in older adults. Nineteen men and women (50-80 years) were recruited to a three month randomised controlled trial and allocated to one of three groups: WBV with flexed knees (FK), WBV with locked knees (LK), or sham WBV with flexed knees (CON). Exposure was intermittent (1 min WBV:1 min rest) for 20 min, three times per week for 13 weeks. Measurements were taken at baseline and at three months. Primary outcomes included upper and lower body muscle function (strength, power and velocity). Secondary outcomes were muscle morphology, balance, habitual and maximal gait velocity, stair climb power, and chair stand performance. Sixteen subjects completed the study. Relative (%) upper body contraction velocity improved significantly after WBV with FK compared to LK (FK 16.0%, LK -7.6%, CON 4.7, p = 0.01). Relative upper body strength (LK 15.1%, p = 0.02; FK 12.1%, p = 0.04; CON 4.7%) increased significantly following WBV compared to control. Absolute (p = 0.05) and relative (p = 0.03) lower leg strength significantly improved with both standing postures (LK 14.4%; FK 10.7%; CON 1.3%). Only the LK group differed significantly from CON in relative leg strength gains (p = 0.02). Potentially clinically meaningful but statistically non-significant improvements in lower leg muscle cross-sectional area (LK 3.7 cm2, FK 2.4 cm2, CON 2.2 cm2 p = 0.13) were observed after WBV with LK compared to the other groups. No significant effects of WBV on any functional performance tests were observed. Our results suggest that WBV may improve muscle strength and contraction velocity in some muscle groups in older adults. However, hypothesised differential adaptation to standing posture (FK > LK) was observed only for upper body contraction velocity, making recommendations regarding this prescriptive element inconclusive. The efficacy, mechanism of action and long term feasibility of WBV for musculoskeletal health in older adults warrants continued investigation in robustly designed, sufficiently powered future studies. ACTRN12609000353291.
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DOI：
10.1093/gerona/56.5.m266
发表时间：
2001-05-01
影响因子：
5.1
作者：
Kenny, AM;Prestwood, KM;Raisz, LG
通讯作者：
Raisz, LG
影响因子：
3.4
作者：
Hazell, Tom J.;Jakobi, Jennifer M.;Kenno, Kenji A.
通讯作者：
Kenno, Kenji A.
影响因子：
3.3
作者：
FRONTERA, WR;HUGHES, VA;EVANS, WJ
通讯作者：
EVANS, WJ
影响因子：
3.5
作者：
Ahlborg, Lotta;Andersson, Christina;Julin, Per
通讯作者：
Julin, Per
DOI：
10.1249/01.mss.0000069752.96438.b0
发表时间：
2003-06-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Delecluse, C;Roelants, M;Verschueren, S
通讯作者：
Verschueren, S