University of Missouri, Columbia, MO 65211-4250, USA.
Arthritis Care Res (Hoboken). 2012 Jan;64(1):46-53. doi: 10.1002/acr.20675.
To examine the effect of high-speed power training (HSPT) on muscle performance, mobility-based function, and pain in older adults with knee osteoarthritis.
Thirty-three participants (mean ± SD age 67.6 ± 6.8 years) were randomized to HSPT (n = 12), slow-speed strength training (SSST; n = 10), or control (CON; n = 11) for a 12-week intervention. HSPT performed 3 sets of 12-14 repetitions at 40% of the 1-repetition maximum (1RM) "as fast as possible," SSST performed 3 sets of 8-10 repetitions at 80% of the 1RM slowly, and CON performed stretching and warm-up exercises. Outcome measures included leg press (LP) 1RM and LP peak power (PP) from 40-90% of the 1RM and the corresponding PP velocity (PPV) and PP force; 400-meter walk, Berg Balance Scale, and timed chair rise; and self-reported function and pain using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). Analysis of variance models were used to compare changes from baseline to 12 weeks. Statistical significance was accepted at P < 0.05.
LP PP improved in both HSPT and SSST compared to CON (P = 0.04). LP PPV improved only in HSPT (P = 0.01). There were also improvements in timed chair rise (P = 0.002), WOMAC function (P = 0.004), and WOMAC pain (P = 0.02) across all of the groups.
HSPT was effective at improving function and pain, but no more so than either SSST or CON. Because HSPT improved multiple muscle performance measures (strength, power, and speed), it is a more effective resistance training protocol than SSST and may increase safety in this population, especially when high-speed movements are required during daily tasks.
研究高速力量训练（HSPT）对膝骨关节炎老年患者肌肉表现、基于移动能力的功能和疼痛的影响。
33 名参与者（平均年龄 ± 标准差为 67.6 ± 6.8 岁）被随机分为 HSPT 组（n = 12）、慢速度力量训练组（SSST；n = 10）或对照组（CON；n = 11），进行为期 12 周的干预。HSPT 以 40%的 1 次重复最大重量（1RM）“尽可能快”进行 3 组 12-14 次重复，SSST 以 80%的 1RM 缓慢进行 3 组 8-10 次重复，CON 进行伸展和热身运动。结果测量包括腿推（LP）1RM 和 LP 峰值功率（PP）从 40-90%的 1RM 和相应的 PP 速度（PPV）和 PP 力；400 米步行、伯格平衡量表和定时椅子上升；以及使用西部安大略省和麦克马斯特大学骨关节炎指数（WOMAC）自我报告的功能和疼痛。采用方差分析模型比较从基线到 12 周的变化。接受 P < 0.05 的统计学意义。
与 CON 相比，HSPT 和 SSST 组的 LP PP 均有改善（P = 0.04）。仅 HSPT 组的 LP PPV 有所改善（P = 0.01）。所有组的定时椅子上升（P = 0.002）、WOMAC 功能（P = 0.004）和 WOMAC 疼痛（P = 0.02）也有所改善。
HSPT 有效改善功能和疼痛，但不如 SSST 或 CON 有效。由于 HSPT 改善了多项肌肉表现测量（力量、功率和速度），因此它是一种比 SSST 更有效的阻力训练方案，并且可能会增加该人群的安全性，尤其是在日常任务中需要高速运动时。
