Ni Meng, Signorile Joseph F
1Department of PM&R, Harvard Medical School, Boston, Massachusetts; 2Department of Kinesiology and Sport Sciences, Laboratory of Neuromuscular Research and Active Aging, University of Miami, Coral Gables, Florida; and 3Miller School of Medicine, Center on Aging, University of Miami, Miami, Florida.
J Strength Cond Res. 2017 Oct;31(10):2866-2875. doi: 10.1519/JSC.0000000000001730.
Muscle power is a major neuromuscular factor affecting motor function and independence in patients with Parkinson's disease (PD), and it is commonly targeted using high-speed exercise. This study examined the changes in velocities (Vpp) and percent loads (%1RMpp) at peak power and load-velocity (L-V) and load-power (L-P) relationships, resulting from resistance training because of exercise choice and loading in older patients with PD. Fourteen older adults with mild to moderate PD participated in a 12-week randomized controlled power training trial. Changes in L-V and L-P relationships for the biceps curl, chest press, leg press, hip abduction, and seated calf were assessed using pneumatic resistance machines at loads ranging from 30 through 90% of subjects' 1 repetition maximum for each exercise. Significant increases in Vpp were seen for biceps curl, leg press, hip abduction, and seated calf and decreases in %1RMpp were noted for biceps curl and hip abduction. Additionally, unique patterns of change were seen in these relationships across exercises, with biceps curl, chest press, and leg press showing the greatest shifts at the lower load end of the loading spectrum, and hip abduction and seated calf showing greatest responses at the higher end. The patterns of change in L-V and L-P relationships provide evidence for the unique responses of the specific muscle groups and joints to the exercises evaluated and offer a framework for more exacting exercise prescriptions in patients with PD.
肌肉力量是影响帕金森病（PD）患者运动功能和独立性的主要神经肌肉因素，通常采用高速运动来针对这一因素。本研究探讨了老年PD患者因运动选择和负荷进行阻力训练后，峰值功率时的速度（Vpp）和百分比负荷（%1RMpp）以及负荷-速度（L-V）和负荷-功率（L-P）关系的变化。14名轻度至中度PD的老年人参与了一项为期12周的随机对照力量训练试验。使用气动阻力器械，在每种运动中，负荷范围为受试者1次重复最大值的30%至90%，评估肱二头肌弯举、卧推、腿举、髋关节外展和坐姿小腿练习的L-V和L-P关系变化。肱二头肌弯举、腿举、髋关节外展和坐姿小腿练习的Vpp显著增加，肱二头肌弯举和髋关节外展的%1RMpp降低。此外，这些练习的这些关系呈现出独特的变化模式，肱二头肌弯举、卧推和腿举在负荷谱的较低负荷端变化最大，而髋关节外展和坐姿小腿在较高负荷端反应最大。L-V和L-P关系的变化模式为特定肌肉群和关节对所评估练习的独特反应提供了证据，并为PD患者制定更精确的运动处方提供了框架。
