Adolescents' Physical Activity and Sedentary Behavior: A Pathway in Reducing Overweight and Obesity. The PRALIMAP 2-Year Cluster Randomized Controlled Trial.
BACKGROUND
explaining why and how overweight prevention programs were effective was a real need; especially the potential role of physical activity (PA) and sedentary behavior (SB) should be highlighted. This study aimed to evaluate the 2-year effectiveness of a screening and care strategy in adolescents' weight reduction with regards to PA and SB change.


METHODS
1745 adolescents aged 15.1 years from PRALIMAP trial was included (n = 840 for screening and care group and n = 905 for control group). PA and SB time (international physical activity questionnaire: IPAQ), body mass index (BMI), and BMI z-score were assessed at inclusion and after 2-year intervention. Hierarchical mixed models were applied.


RESULTS
Compared with the control group, screening and care strategy was associated with an increase in global PA (58 min/week), a moderate PA (43 min/week), the adherence to the French PA guidelines (OR = 1.3), and a decrease in SB (-198 min/week). The 2-year weight change decreased when adjusted for PA and SB suggesting that the effect of screening and care strategy was partly mediated by PA and SB.


CONCLUSIONS
Screening and care intervention seemed to be effective in increasing PA and decreasing SB. The induced PA and SB modifications contributed to the observed weight change.
University of Lorraine, Paris Descartes University, EA 4360 APEMAC, Nancy, 54500, France.
Abdou Y
AY
Omorou
Johanne
J
Langlois
Edith
E
Lecomte
Anne
A
Vuillemin
Serge
S
Briançon
D000293:Adolescent; D015992:Body Mass Index; D016000:Cluster Analysis; D015444:Exercise; D005260:Female; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D008297:Male; D009765:Obesity / Q000517:prevention & control*; D017063:Outcome Assessment, Health Care; D050177:Overweight / Q000517:prevention & control*; D057185:Sedentary Behavior; D011795:Surveys and Questionnaires