Conclusions Leisure time physical activity may reduce the risk of chronic LBP by 11%–16 % .
Background There are plausible mechanisms whereby leisure time physical activity may protect against  low back pain ( LBP )  but there have been no quality systematic review s and meta-analyses of the subject .
Objective This review aims to assess the effect of leisure time physical activity on non-specific LBP .
Physical exercise, body mass index, and risk of chronic pain in the low back and neck/shoulders: longitudinal data from the Nord-Trondelag Health Study.
Chronic musculoskeletal pain constitutes a large socioeconomic challenge , and preventive measures with documented effects are warranted . The authors ' aim in this study was to prospect ively investigate the association between physical exercise , body mass index ( BMI ) , and risk of chronic pain in the low back and neck/shoulders . The study comprised data on approximately 30,000 women and men in the Nord-Trøndelag Health Study ( Norway ) who reported no pain or physical impairment at baseline in 1984 - 1986 . Occurrence of  chronic musculoskeletal pain  was assessed at follow-up in 1995 - 1997 . A generalized linear model was used to calculate adjusted risk ratios . For both females and males , hours of physical exercise per week were linearly and inversely associated with risk of chronic pain in the low back ( women : P-trend = 0.02 ; men : P-trend < 0.001 ) and neck/shoulders ( women : P-trend = 0.002 ; men : P-trend < 0.001 ) . Obese women and men had an approximately 20 % increased risk of chronic pain in both the low back and the neck/shoulders . Exercising for 1 or more hours per week compensated , to some extent , for the adverse effect of high BMI on risk of chronic pain . The authors conclude that physical inactivity and high BMI are associated with an increased risk of chronic pain in the low back and neck/shoulders in the general adult population
Conclusions Leisure time physical activity may reduce the risk of chronic LBP by 11%–16 % .
Background There are plausible mechanisms whereby leisure time physical activity may protect against  low back pain ( LBP )  but there have been no quality systematic review s and meta-analyses of the subject .
Objective This review aims to assess the effect of leisure time physical activity on non-specific LBP .