Trunk muscle function and its association with functional limitations in sedentary occupation workers with and without chronic nonspecific low back pain

后备箱 医学 物理疗法 物理医学与康复 腰痛 背部肌肉 方差分析 Oswestry残疾指数 肌肉力量 内科学 生态学 生物 病理 替代医学
作者
Angela Boutellier,Corina Nüesch,Peter Suter,G. Perrot
出处
期刊:Journal of Back and Musculoskeletal Rehabilitation [IOS Press]
卷期号:35 (4): 783-791 被引量:3
标识
DOI:10.3233/bmr-200269
摘要

BACKGROUND: The function of trunk muscles in chronic nonspecific low back pain (CNLBP) is controversially discussed, and trunk muscle function in sedentary occupation workers is poorly understood. OBJECTIVE: To investigate whether muscle function differs between sedentary occupation workers with and without CNLBP and to determine the association between functional limitations and muscle function. METHODS: This study included 32 sedentary occupation workers (16 workers with CNLBP and 16 age- and sex-matched workers without CNLBP). Group differences in isokinetic trunk flexion-extension strength, muscle cocontraction, endurance time (Biering-Sorensen test) and electromyographic muscle fatigue were assessed. The association of these parameters and Oswestry Disability Index (ODI) score were examined in the CNLBP group. RESULTS: Participants with CNLBP had lower trunk extensor (-20%) and flexor (-18%) strength and less cocontraction (-22%) than participants without CNLBP, but due to large variability in both groups these differences were not statistically significant. Trunk muscle endurance and fatigue were comparable between groups. Variance in endurance time explained 28% of variance in the ODI-score in the CNLBP group (R2= 0.277). CONCLUSIONS: In patients with CNLBP, greater functional disability was associated with lower endurance. Further evidence is necessary to elucidate whether specifically training endurance performance may be beneficial for sedentary occupation workers.
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