title: Sports activities, body weight and smoking in relation to low-back pain: a population-based case-referent study.
abstract: The study aims to describe the influence of sports activities, high body weight and smoking on low-back pain. The results were obtained from a population-based case-referent study, the Musculoskeletal Intervention Center (MUSIC)-Norrtälje study. In all, 342 male and 449 female cases, and 662 male and 948 female referents participated. Neither low-intensity training many hours/week (> or = 5 h) nor high-intensity training few (1-2 h), intermediate (3-4 h) or many hours (> or = 5 h) per week affected the risk of low-back pain among men. Few (1-2) hours with high-intensity training increased the relative risk of low-back pain among women, RR 1.6 (1.1-2.4). An increased risk of low-back pain was found for men with high body weight, RR 2.2 (CI 1.2-3.9) but not for women. Smoking did not influence the risk of low-back pain.
authors.affiliation: Department of Occupational Health, Stockholm County Council, Sweden.
authors.forename: M
authors.initials: M
authors.lastname: Mortimer
authors.forename: C
authors.initials: C
authors.lastname: Wiktorin
authors.forename: G
authors.initials: G
authors.lastname: Pernol
authors.forename: H
authors.initials: H
authors.lastname: Svensson
authors.forename: E
authors.initials: E
authors.lastname: Vingård
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000209:etiology* / Q000517:prevention & control / Q000628:therapy; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications*; D010806:Physical Education and Training / Q000379:methods; D012044:Regression Analysis; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects* / Q000523:psychology; D012959:Socioeconomic Factors; D013177:Sports / Q000502:physiology*