No relationship was identified between changes in weight and walking performance post-surgery .
Although physical activity performed after bariatric surgery is associated with enhanced weight loss outcomes , there is limited information on patients ' physical activity behaviour in this context .
This systematic review and meta- analysis assessed pre-operative to post-operative changes in physical activity and physical function outcomes among obese adults undergoing bariatric surgery .
Longitudinal Assessment of Physical Activity in Women Undergoing Roux-en-Y Gastric Bypass
Background Patients undergoing bariatric surgery  do not seem to increase objective ly measured  physical activity ( PA ) after surgery , despite substantial weight loss . The aims of the present study were ( i ) to objective ly characterize 3 months pre-surgery to 9 months postsurgery PA and sedentary behavior changes in women undergoing Roux-en-Y gastric bypass ( RYGB )  using tri-axial accelerometers and ( ii ) to examine associations between pre-surgery versus postsurgery PA and sedentary behavior with anthropometric measures taken in home environment . Methods Fifty-six women , with an average pre-surgery body mass index ( BMI ) of 37.6 ( SD 2.6 ) and of age 39.5 years ( SD 5.7 ) , were recruited at five Swedish hospitals .  PA  was measured for 1 week by the Actigraph GT3X+ accelerometer , and anthropometric measures were taken at home visits 3 months pre-surgery and 9 months postsurgery , thus limiting seasonal effects . Results Average BMI loss , 9 months postsurgery , was 11.7 ( SD 2.7 ) BMI units . There were no significant pre- to postsurgery differences in PA or sedentary behavior . However , pre-surgery PA showed negative association with PA change and positive association with postsurgery PA . Adjustments for pre-surgery BMI had no impact on these associations . Conclusions No significant differences were observed in objective ly measured changes in PA or time spent sedentary from 3 months pre-surgery to 9 months postsurgery among women undergoing RYGB . However , women with higher pre-surgery PA decreased their PA postsurgery while women with lower pre-surgery PA increased their PA
No relationship was identified between changes in weight and walking performance post-surgery .
Although physical activity performed after bariatric surgery is associated with enhanced weight loss outcomes , there is limited information on patients ' physical activity behaviour in this context .
This systematic review and meta- analysis assessed pre-operative to post-operative changes in physical activity and physical function outcomes among obese adults undergoing bariatric surgery .