Conclusions Meta- analysis of data from prospect i ve cohort studies showed small , inconsistent and non-significant associations between sedentary behavior and body weight
Background The cumulative effect of too much sedentary behavior may contribute to  weight gain and obesity .
Objective The aim of this study was to conduct a systematic review and meta- analysis of prospect i ve cohorts and r and omized controlled studies to determine the association between sedentary  behavior  and body weight and obesity in adults .
Benefits for Type 2 Diabetes of Interrupting Prolonged Sitting With Brief Bouts of Light Walking or Simple Resistance Activities
OBJECTIVE To determine whether interrupting prolonged sitting with brief bouts of light-intensity walking ( LW ) or simple resistance activities ( SRA ) improves postpr and ial cardiometabolic risk markers in adults with type 2 diabetes ( T2D ) . RESEARCH DESIGN AND METHODS In a r and omized crossover trial , 24 inactive overweight/obese adults with T2D ( 14 men 62 ± 6 years old ) underwent the following 8-h conditions on three separate days ( with 6–14 days washout ) : uninterrupted sitting ( control ) ( SIT ) , sitting plus 3-min bouts of LW ( 3.2 km · h−1 ) every 30 min , and sitting plus 3-min bouts of SRA ( half-squats , calf raises , gluteal contractions , and knee raises ) every 30 min . St and ardized meals were consumed during each condition . Incremental areas under the curve ( iAUCs ) for glucose , insulin , C-peptide , and triglycerides were compared between conditions . RESULTS Compared with SIT , both activity-break conditions significantly attenuated iAUCs for glucose ( SIT mean 24.2 mmol · h · L−1 [ 95 % CI 20.4–28.0 ] vs. LW 14.8 [ 11.0–18.6 ] and SRA 14.7 [ 10.9–18.5 ] ) , insulin ( SIT 3,293 pmol · h · L−1 [ 2,887–3,700 ] vs. LW 2,104 [ 1,696–2,511 ] and SRA 2,066 [ 1,660–2,473 ] ) , and C-peptide ( SIT 15,641 pmol · h · L−1 [ 14,353–16,929 ] vs. LW 11,504 [ 10,209–12,799 ] and SRA 11,012 [ 9,723–12,301 ] ) ( all P < 0.001 ) . The iAUC for triglycerides was significantly attenuated for SRA ( P < 0.001 ) but not for LW ( SIT 4.8 mmol · h · L−1 [ 3.6–6.0 ] vs. LW 4.0 [ 2.8–5.1 ] and SRA 2.9 [ 1.7–4.1 ] ) . CONCLUSIONS  Interrupting prolonged sitting with brief bouts of LW or SRA  attenuates acute postpr and ial glucose , insulin , C-peptide , and triglyceride responses in adults with T2D . With poor adherence to structured exercise , this approach is potentially beneficial and practical
Conclusions Meta- analysis of data from prospect i ve cohort studies showed small , inconsistent and non-significant associations between sedentary behavior and body weight
Background The cumulative effect of too much sedentary behavior may contribute to  weight gain and obesity .
Objective The aim of this study was to conduct a systematic review and meta- analysis of prospect i ve cohorts and r and omized controlled studies to determine the association between sedentary  behavior  and body weight and obesity in adults .