Bean Jonathan F, Herman Seth, Kiely Dan K, Frey Ingrid C, Leveille Suzanne G, Fielding Roger A, Frontera Walter R
Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, Boston, Massachusetts, USA.
J Am Geriatr Soc. 2004 May;52(5):799-804. doi: 10.1111/j.1532-5415.2004.52222.x.
To evaluate a dynamic form of weighted vest exercise suitable for home use and designed to enhance muscle power, balance, and mobility.
A single-blind, randomized, controlled trial.
Outpatient exercise research facility situated within an academic long-term care center.
Twenty-one community-dwelling women aged 70 and older with a Short Physical Performance Battery (SPPB) score between 4 and 10 (out of 12).
Subjects were randomized into a progressive resistance-training program using weighted vests for resistance with exercises designed to be specific to mobility tasks and have a component performed at the fastest possible velocity (Increased Velocity Exercise Specific to Task (InVEST), n=11) or a control exercise group (control, n=10), which performed slow-velocity, low-resistance exercise. Both groups exercised three times a week for 12 weeks.
Changes in muscle power, balance, and physical performance were compared.
In comparison to control group, InVEST group manifested significant improvements (P<.05) in leg power across measurements obtained at 75% to 90% of the one-repetition maximum. Both groups demonstrated significant improvements in chair stand and SPPB score from baseline, and the InVEST group showed significant improvements in gait speed and chair stand from baseline (P<.05). InVEST produced significantly greater changes in chair stand time than control (P<.05).
InVEST training appears be an effective means of enhancing leg power and chair rise in this population and is worthy of further investigation as a means of enhancing balance and mobility.
评估一种适合家庭使用的动态加权背心运动形式，该运动旨在增强肌肉力量、平衡能力和活动能力。
单盲、随机、对照试验。
位于学术性长期护理中心内的门诊运动研究设施。
21名年龄在70岁及以上的社区居住女性，简短体能测试电池（SPPB）得分在4至10分（满分12分）之间。
受试者被随机分为一个渐进性抗阻训练项目组（使用加权背心进行抗阻训练，所设计的练习针对活动任务，且有一个部分以尽可能快的速度进行（特定任务的速度增加运动（InVEST），n = 11））或一个对照运动组（对照组，n = 10），对照组进行慢速、低阻力运动。两组均每周锻炼三次，共12周。
比较肌肉力量、平衡能力和身体表现的变化。
与对照组相比，InVEST组在一次重复最大值的75%至90%时所获得的各项测量中，腿部力量有显著改善（P <.05）。两组从基线开始在从椅子上站起和SPPB得分方面均有显著改善，且InVEST组从基线开始在步速和从椅子上站起方面有显著改善（P <.05）。InVEST组在从椅子上站起的时间变化上比对照组显著更大（P <.05）。
InVEST训练似乎是增强该人群腿部力量和从椅子上站起能力的有效方法，作为增强平衡能力和活动能力的一种方法值得进一步研究。
