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Negative correlation between body mass index category and physical activity perceptions in children

Children's physical activity (PA) choices are influenced by their perceived ability (adequacy) and inclination toward (predilection) PA. The study's purpose was to determine the association of body mass index (BMI) category with PA perceptions in sixth-grade children. A total of 267 children (119 boys, 148 girls; age 11+ y; ht 1.53 SD 0.08 m; wt 49.0 SD 13.5 kg; BMI 20.7 SD 4.8) provided informed consent and completed the study. All were measured for body weight and height and completed the Children's Self-perceptions of Adequacy in and Predilection for Physical Activity (CSAPPA) scale. Spearman rank-order correlation analysis was conducted between total CSAPPA score (and three factor scores of adequacy, predilection, and enjoyment) and BMI category relative to gender, body weight classification and for all children. A significant negative correlation was identified between BMI category (p < 0.01) and CSAPPA total, adequacy, and predilection score for all children. Girls (but not boys) showed significant negative correlation between BMI category and all CSAPPA scores. A significant negative correlation in BMI category and PA perceptions exists in children, with the relationship being stronger in girls. Children with increased BMI may have adverse perceptions of PA and risks for sedentary behavior.