Fulford Jonathan, Juroskova Vladimira, Meakin Judith R, Barker Alan R
Exeter NIHR Clinical Research Facility, University of Exeter Medical School, University of Exeter, Exeter, UK.
Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK.
J Back Musculoskelet Rehabil. 2017 Aug 3;30(4):717-724. doi: 10.3233/BMR-150337.
Exercise of the spinal muscles is recommended for a variety of rehabilitative reasons but it is not always clear whether interventions are effective in improving the performance of the muscles or whether their benefit is elicited via other mechanisms.
To explore the effects of an exercise intervention on the size and exercise performance of the lumbar spine extensor muscles.
Eleven healthy participants undertook a four week programme of exercise. Magnetic resonance imaging and phosphorus spectroscopy were performed before and after the intervention to determine the time to fatigue and phosphocreatine (PCr) depletion during a muscle endurance test (modified Biering-Sørensen) together with muscle cross-sectional area (CSA).
The post intervention measures were significantly different to the pre-intervention results for the time to fatigue (post-pre: 20.5 ± 22.7 s (P= 0.014)) and PCr depletion both at the point of fatigue (post-pre: 9.5 ± 11.9% (P= 0.024)) and at a matched time-point (post-pre: 12.2 ± 11.9% (P= 0.007)). CSA was not significantly different in any muscle.
Exercise improved the performance of the trunk muscles despite no impact on CSA. This demonstrated the importance of obtaining a wide range of measures when assessing the effectiveness of exercise intervention programmes.
出于多种康复原因，建议进行脊柱肌肉锻炼，但干预措施是否能有效改善肌肉性能，或者其益处是否通过其他机制产生，并不总是明确的。
探讨运动干预对腰椎伸肌大小和运动表现的影响。
11名健康参与者进行了为期四周的运动计划。在干预前后进行磁共振成像和磷谱分析，以确定肌肉耐力测试（改良比林-索伦森试验）期间的疲劳时间和磷酸肌酸（PCr）消耗，以及肌肉横截面积（CSA）。
干预后的疲劳时间（干预后-干预前：20.5±22.7秒（P = 0.014））以及疲劳时（干预后-干预前：9.5±11.9%（P = 0.024））和匹配时间点（干预后-干预前：12.2±11.9%（P = 0.007））的PCr消耗与干预前结果有显著差异。任何肌肉的CSA均无显著差异。
运动改善了躯干肌肉的性能，尽管对CSA没有影响。这表明在评估运动干预计划的有效性时，采用多种测量方法的重要性。
