坐位低频全身振动训练对老年下肢残疾者肌肉力量及行走能力的影响

目的探讨坐位低频全身振动训练(WBVT)对老年下肢残疾者肌肉力量及行走能力的影响。方法募集上海市杨浦区殷行街道自愿报名的老年下肢残疾者20例(因外伤致残,残疾等级为42~44),其中男性9例,女性11例,年龄(66.6±4.8)岁,所有受试者接受每周3 d共计8周的WBVT,比较训练前后受试者膝关节屈、伸肌肌力、6分钟步行测试(6 MWT)、10米行走测试(10 MWT)和计时起立-行走(TUG)测试结果。应用SPSS 22.0统计软件对数据进行分析,训练前后比较采用配对t检验。结果所有受试者皆顺利完成振动训练及测量,无缺失及不适、不安全情况发生。受试者WBVT训练后相比训练前膝关节屈肌肌力(39.36±16.09)vs(37.37±16.12)Nm]、伸肌肌力(58.18±21.31)vs(56.49±21.69)Nm]增高,TUG(7.73±2.17)vs(9.70±2.22)s]和10 MWT(7.51±2.26)vs(7.86±2.30)s]水平降低,6 MWT(438.74±125.10)vs(401.99±114.08)m]水平升高,差异具有统计学意义(P0.05)。结论 8周坐位低频WBVT可明显提高老年下肢残疾者膝关节屈、伸肌肌力,显著改善行走平衡能力和提高速度。

Effect of low-frequency whole-body vibration training at sitting position on muscle strength and walking ability in the elderly with lower limb disability

Objective To determine the effect of low-frequency whole-body vibration training (WBVT) at sitting position on muscle strength and walking ability of the elderly patients with lower limb disability. Methods Twenty elderly patients with lower limb disability (due to accidents, at a disable class of 42-44) who were volunteered to our study were recruited. They were 9 males and 11 females, at an age of (66.6±4.8)years. They all received WBVT at sitting position for 3 d per week, totally 8 weeks. Flexion and extensor strengths of the knee joint, 6-min walking test (6 MWT), 10-meter walking test (10 MWT) and timed up and go (TUG) test were measured before and after the training, and the results were compared. SPSS statistics 22.0 was used to perform the statistical analysis. Paired t test was employed for the comparison of the data before and after training. Results All the subjects successfully completed the training and measurement, and no loss, discomfortableness, or unsafe conditions occurred. After the training, knee flexion (39.36±16.09) vs (37.37±16.12) Nm] and extension muscles strengths (58.18±21.31) vs (56.49±21.69) Nm] were increased, while the results of TUG (7.73±2.17) vs (9.70±2.22) s] and 10 MWT (7.51±2.26) vs (7.86±2.30) s] were decreased, and that of 6 MWT (438.74±125.10) vs (401.99±114.08) m] was elevated, with significant differences in all these data (P<0.05). Conclusion WBVT at sitting position for 8 weeks can obviously promote the flexion and extension muscles strengths of the knee joint, and improve the balance and speed of walking in the elderly with lower limb disability.