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The effects of 10,000 voluntary contractions over 8 weeks on the strength of very weak muscles in people with spinal cord injury: a randomised controlled trial.
Spinal Cord ( IF 2.1 ) Pub Date : 2020-02-21 , DOI: 10.1038/s41393-020-0439-1
Lydia W Chen 1, 2 , Joanne V Glinsky 1 , Md Shofiqul Islam 3 , Muzaffor Hossain 3 , Claire L Boswell-Ruys 4, 5 , Chitra Kataria 6 , Jason Redhead 7 , Yuan Xiong 8 , Emilie Gollan 9 , Punam D Costa 3 , Sophie Denis 4 , Marsha Ben 10 , Lovely Chaudhary 6 , Jun Wang 8 , Md Abu Khayer Hasnat 3 , Jayne Yeomans 2 , Simon C Gandevia 5 , Lisa A Harvey 1
Affiliation  

STUDY DESIGN A multi-centred, single-blinded randomised controlled trial. OBJECTIVES To determine the effect of 10,000 voluntary contractions over 8 weeks on the strength of very weak muscles in people with spinal cord injury (SCI). SETTINGS Seven hospitals in Australia and Asia. METHODS One hundred and twenty people with recent SCI undergoing inpatient rehabilitation were randomised to either a Treatment or Control Group. One major muscle group from an upper or lower limb was selected if the muscle had grade 1 or grade 2 strength on a standard six-point manual muscle test. Participants allocated to the Treatment Group performed 10,000 isolated contractions of the selected muscle group, as well as usual care in 48 sessions over 8 weeks. Participants allocated to the Control Group received usual care alone. Participants were assessed at baseline and 8 weeks by a blinded assessor. The primary outcome was voluntary muscle strength on a 13-point manual muscle test. There were three secondary outcomes capturing therapists' and participants' perceptions of strength and function. RESULTS The mean between-group difference of voluntary strength at 8 weeks was 0.4/13 points (95% confidence interval -0.5 to 1.4) in favour of the Treatment Group. There were no notable between-group differences on any secondary outcome. CONCLUSION Ten thousand isolated contractions of very weak muscles in people with SCI over 8 weeks has either no or a very small effect on voluntary strength.

中文翻译:

8周内10,000次自愿性收缩对脊髓损伤患者非常弱的肌肉力量的影响:一项随机对照试验。

研究设计多中心,单盲的随机对照试验。目的确定8周内10,000次自愿性收缩对脊髓损伤(SCI)患者非常弱的肌肉力量的影响。设置澳大利亚和亚洲的七家医院。方法将120例近期接受住院康复治疗的SCI患者随机分为治疗组或对照组。如果在标准的六点手动肌肉测试中,肌肉具有1级或2级力量,则从上肢或下肢中选择一个主要的肌肉群。分配给治疗组的参与者在8周内进行了48次疗程,分别进行了选定肌肉组的10,000次孤立性收缩。分配给对照组的参与者仅获得常规护理。盲人评估者在基线和第8周对参与者进行评估。主要结果是通过13点手动肌肉测试获得的自愿肌肉力量。共有三项次要结果记录了治疗师和参与者对力量和功能的理解。结果有利于治疗组的8周时,自愿强度的组间平均差异为0.4 / 13分(95%置信区间-0.5至1.4)。在任何次要结局方面,组间均无显着差异。结论在8周内,SCI患者中一万个非常弱的肌肉的孤立收缩对自发力量没有影响或影响很小。以及参与者对力量和功能的看法。结果有利于治疗组的8周时,自愿强度的组间平均差异为0.4 / 13分(95%置信区间-0.5至1.4)。在任何次要结局方面,组间均无显着差异。结论在8周内,SCI患者中一万个非常弱的肌肉的孤立收缩对自发力量没有影响或影响很小。以及参与者对力量和功能的看法。结果有利于治疗组的8周时,自愿强度的组间平均差异为0.4 / 13分(95%置信区间-0.5至1.4)。在任何次要结局方面,组间均无显着差异。结论在8周内,SCI患者中一万个非常弱的肌肉的孤立收缩对自发力量没有影响或影响很小。
更新日期:2020-02-21
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