Department of Physical Therapy, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil.
Department of Physical Therapy, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.
Spine (Phila Pa 1976). 2021 May 1;46(9):596-602. doi: 10.1097/BRS.0000000000003996.
Observational cross-sectional.
To investigate the association between leisure-time physical activity (LTPA) and low back pain (LBP) in adults from primary care settings, and to explore how sedentary behavior influences this association.
LTPA is inversely associated with LBP. However, there is no study investigating this association in primary care settings from a middle-income country. Moreover, the influence of sedentary behavior in this association is unknown.
Cross-sectional analysis of an ongoing longitudinal study with adults from Bauru, Brazil (n = 557). Data on physical activity, sedentary behavior (sitting time), LBP, body mass index (BMI), and chronic diseases were assessed by face-to-face interviews, physical evaluation, and medical records. Binary logistic regression was used to test the association of LTPA with the presence of LBP. Sociodemographic, behavioral, and health variables were used as covariables in the multivariable models.
The fully adjusted model showed that active participants were 33% less likely to have LBP when compared with those insufficiently active (odds ratios [OR]: 0.67 [95% CI: 0.46-0.98]). A significant association was found for active participants who spent less than 3 h/day sitting (OR: 0.45 [95% CI: 0.23-0.89]) but not for those who spent 3 h/day or more in sedentary activities (OR: 0.78 [95% CI: 0.48-1.27]). An inverse association of LTPA with LBP was observed in obese participants (OR = 0.49 [95% CI: 0.25-0.94]), but not in those with normal BMI and overweight.
LTPA was inversely associated with the prevalence of LBP in adults from primary care. This association was influenced by sedentary behavior and BMI.Level of Evidence: 4.
观察性横断面研究。
调查成年人在初级保健环境中休闲时间体力活动（LTPA）与下腰痛（LBP）之间的关联，并探讨久坐行为如何影响这种关联。
LTPA 与 LBP 呈负相关。然而，目前还没有从中等收入国家的初级保健环境中研究这种关联的研究。此外，这种关联中久坐行为的影响尚不清楚。
对巴西包鲁市成年人进行的一项正在进行的纵向研究的横断面分析（n = 557）。通过面对面访谈、身体评估和病历评估，收集体力活动、久坐行为（坐姿时间）、LBP、体重指数（BMI）和慢性疾病的数据。使用二元逻辑回归测试 LTPA 与 LBP 存在的关联。在多变量模型中，使用社会人口统计学、行为和健康变量作为协变量。
完全调整后的模型显示，与活动不足的参与者相比，活跃参与者发生 LBP 的可能性低 33%（比值比 [OR]：0.67 [95%CI：0.46-0.98]）。对于每天坐少于 3 小时的活跃参与者，发现了显著的关联（OR：0.45 [95%CI：0.23-0.89]），但对于每天坐 3 小时或更长时间的参与者，关联不显著（OR：0.78 [95%CI：0.48-1.27]）。在肥胖参与者中观察到 LTPA 与 LBP 呈负相关（OR = 0.49 [95%CI：0.25-0.94]），但在 BMI 正常和超重的参与者中未观察到这种关联。
在成年人中，LTPA 与初级保健中的 LBP 患病率呈负相关。这种关联受到久坐行为和 BMI 的影响。
4 级。
