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 .
A Randomized Controlled Trial Comparing the McKenzie Method to Motor Control Exercises in People With Chronic Low Back Pain and a Directional Preference.
Study Design R and omized clinical trial . Background Motor control exercises are believed to improve coordination of the trunk muscles . It is unclear whether increases in trunk muscle thickness can be facilitated by approaches such as the McKenzie method . Furthermore , it is unclear which approach may have superior clinical outcomes . Objectives The primary aim was to compare the effects of the McKenzie method and motor control exercises on trunk muscle recruitment in people with chronic low back pain classified with a directional preference . The secondary aim was to conduct a between-group comparison of outcomes for pain , function , and global perceived effect . Methods Seventy people with chronic low back pain who demonstrated a directional preference using the McKenzie assessment were r and omized to receive 12 treatments over 8 weeks with the McKenzie method or with motor control approaches . All outcomes were collected at baseline and at 8-week follow-up by blinded assessors . Results No significant between-group difference was found for trunk muscle thickness of the transversus abdominis ( -5.8 % ; 95 % confidence interval [ CI ] : -15.2 % , 3.7 % ) , obliquus internus ( -0.7 % ; 95 % CI : -6.6 % , 5.2 % ) , and obliquus externus ( 1.2 % ; 95 % CI : -4.3 % , 6.8 % ) . Perceived recovery was slightly superior in the McKenzie group ( -0.8 ; 95 % CI : -1.5 , -0.1 ) on a -5 to + 5 scale . No significant between-group differences were found for pain or function ( P = .99 and P = .26 , respectively ) . Conclusion We found no significant effect of treatment group for trunk muscle thickness . Participants reported a slightly greater sense of perceived recovery with the McKenzie method than with the motor control approach . Level of Evidence Therapy , level 1b- . Registered September 7 , 2011 at www.anzctr.org.au ( ACTRN12611000971932 ) . J Orthop Sports Phys Ther 2016;46(7):514 - 522 . Epub 12 May 2016 . doi:10.2519/jospt.2016.6379
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 .