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Do patients with chronic low back pain have a lower level of aerobic fitness than healthy controls?: are pain, disability, fear of injury, working status, or level of leisure time activity associated with the difference in aerobic fitness level?

机译：慢性下腰痛患者的有氧健身水平是否低于健康对照者？：疼痛，残疾，对受伤的恐惧，工作状态或休闲时间活动水平是否与有氧健身水平的差异相关？

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STUDY DESIGN: Prospective case series with historical controls (normative data). OBJECTIVES: To compare the aerobic fitness level of patients with chronic low back pain (CLBP) with healthy controls matched for gender, age, and level of sport activity and to evaluate the association of the difference in aerobic fitness level with pain intensity, duration and degree of disability, fear of injury, and level of activity during work, including household and leisure time. SUMMARY AND BACKGROUND DATA: Controversy exists whether patients with CLBP have a lower level of aerobic fitness and whether this level may partly depend on the patients' activity level. METHODS: A total of 108 CLBP patients completed questionnaires regarding pain, disability, fear of injury, and activity level and performed a modified Astrand submaximal cycling test. The maximum oxygen consumption (VO2max) was calculated and compared with normative data. Multiple linear regression analysis was performed with the difference of the level of aerobic fitness as dependent variable. RESULTS: VO2max could be calculated in 78% of the patients. Both men and women with CLBP had significant lower VO2max than the healthy referents (10 mL/kg LBM x min(-1) and 5.6 mL/kg LBM x min(-1) respectively, P < 0.001), and this difference was significantly greater in men (P = 0.03). Multiple regression analysis showed that the level of aerobic fitness was not associated with the presumed variables. The patients who stopped the test prematurely were older (P = 0.02) and more disabled (P = 0.01). CONCLUSION: CLBP patients, especially men, seem to have a reduced aerobic fitness level compared with the normative population. No explanatory factor for that loss could be identified.
机译：研究设计：具有历史对照（规范数据）的预期病例系列。目的：比较慢性下腰痛（CLBP）患者和有健康的对照者（性别，年龄和体育活动水平）的有氧健身水平，并评估有氧健身水平差异与疼痛强度，持续时间和疼痛程度之间的关系。残疾程度，对伤害的恐惧以及工作期间的活动水平，包括家庭和休闲时间。摘要和背景数据：存在争议的CLBP患者是否有较低的有氧健身水平，以及该水平是否部分取决于患者的活动水平。方法：总共108名CLBP患者完成了有关疼痛，残疾，害怕受伤和活动水平的问卷调查，并进行了改良的Astrand次最大循环测试。计算最大耗氧量（VO2max）并与标准数据进行比较。进行多元线性回归分析，以有氧适应水平的差异作为因变量。结果：可以在78％的患者中计算出VO2max。患有CLBP的男性和女性的VO2max均显着低于健康参照者（分别为10 mL / kg LBM x min（-1）和5.6 mL / kg LBM x min（-1），P <0.001），这一差异显着男性更大（P = 0.03）。多元回归分析表明，有氧适应水平与假定变量无关。提前停止测试的患者年龄较大（P = 0.02），而残疾较多（P = 0.01）。结论：与正常人群相比，CLBP患者，尤其是男性，似乎有氧健身水平降低。无法确定造成该损失的解释性因素。

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