Ma Ada W W, Wang Hsing-Kuo, Chen Duan-Rung, Chen Ya-Mei, Chak Yvonne T C, Chan Joan W Y, Yam Timothy T T, Cheng Yoyo T Y, Ganesan Balasankar, Fong Shirley S M
1 Department of Health and Physical Education, The Education University of Hong Kong, Hong Kong, People's Republic of China.
2 School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan.
Percept Mot Skills. 2019 Jun;126(3):389-409. doi: 10.1177/0031512518824945. Epub 2019 Feb 25.
This randomized controlled trial explored the effects of a Ving Tsun (VT) Chinese martial art training program on reactive standing balance performance, postural muscle reflex contraction latency, leg muscle performance, balance confidence and falls in community-dwelling older adults. We randomly assigned 33 healthy older adults to either a VT group (mean age = 67.5 years) or a control group (mean age = 72.1 years). The VT group received two 1-hour VT training sessions per week for three months (24 sessions). Primary outcome measures collected before and after the intervention period were electromyographic muscle activation onset latencies of the hamstring and gastrocnemius and the center of pressure path, length and movement velocity in standing (reactive balance performance). Secondary outcome measures included isometric peak force and time to isometric peak force of the knee extensors and flexors, the Activities-Specific Balance Confidence Scale score, and fall history. Results revealed that the mean gastrocnemius muscle activation onset latency was significantly longer (22.53 ms) in the VT group after the intervention. The peak force of the knee flexors significantly increased (by 1.58 kg) in the control group over time but not in the VT group. The time to reach peak force in the knee flexors was significantly longer (by 0.51 s) in the control group (but not the VT group) at posttest compared with the pretest value. No other significant group, time, or group-by-time interaction effects were noted. We discussed possible reasons for the failure of three months of martial art training to benefit fall risks among these older adults.
这项随机对照试验探讨了咏春拳训练计划对社区居住的老年人反应性站立平衡能力、姿势肌肉反射收缩潜伏期、腿部肌肉性能、平衡信心和跌倒情况的影响。我们将33名健康老年人随机分为咏春拳组(平均年龄 = 67.5岁)或对照组(平均年龄 = 72.1岁)。咏春拳组每周接受两次1小时的咏春拳训练,为期三个月(共24节课程)。在干预期前后收集的主要结局指标包括腘绳肌和腓肠肌的肌电图肌肉激活起始潜伏期以及站立时的压力中心路径、长度和移动速度(反应性平衡能力)。次要结局指标包括膝伸肌和屈肌的等长峰值力和达到等长峰值力的时间、特定活动平衡信心量表得分以及跌倒史。结果显示,干预后咏春拳组腓肠肌肌肉激活起始潜伏期的平均值显著延长(22.53毫秒)。随着时间的推移,对照组膝屈肌的峰值力显著增加(增加了1.58千克),而咏春拳组没有。与测试前值相比,测试后对照组膝屈肌达到峰值力的时间显著延长(延长了0.51秒)(咏春拳组没有)。未发现其他显著的组、时间或组×时间交互效应。我们讨论了三个月的武术训练未能降低这些老年人跌倒风险的可能原因。