EMG recovery and ratings after back extensor fatigue in patients with lumbar disc herniation and healthy subjects

被引:0
作者
Åsa Dedering
Britt Elfving
Gunnar Németh
机构
[1] Karolinska Hospital,Department of Physiotherapy, Neuro R1:07
[2] Karolinska Institutet/ Karolinska Hospital,Department of Orthopedics
[3] Karolinska Institutet,Neurotec Department, Division of Physiotherapy
来源
European Journal of Applied Physiology | 2004年 / 92卷
关键词
Electromyography; Lumbar disc herniation; Non-linear regression; Subjective ratings; Recovery;
D O I
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中图分类号
学科分类号
摘要
This prospective study aimed to examine whether patients with lumbar disc herniation, before and after surgery, showed impaired recovery from fatigue measured with EMG and subjective ratings as compared to healthy subjects. Forty-three patients due for, and after, lumbar disc surgery and 60 healthy subjects were fatigued using a modified Sørensen’s test. Recovery of back extensor muscles was assessed using electromyography and the Borg scale ratings at 1, 2, 3, and 5 minutes of recovery, and was further analyzed using an exponential time-dependence model. The patients completed four questionnaires: the Oswestry, the Roland-Morris, a self-efficacy scale and the SF-36. The exponential time-dependence model was successful for 14 of the 43 patients and 57 of the 60 healthy subjects. The patients for whom the model succeeded had significantly better scores on the questionnaires than those for whom the model was unsuccessful. Specific items related to standing and lifting were identified. The patients’ recovery was impaired compared to the healthy subjects, as determined by use of the exponential time-dependence model. The combination of fatigue and recovery measures was reflected in the questionnaire scores and is therefore important for evaluating patients with lumbar disc herniation.
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页码:150 / 159
页数:9
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