The Relationship of Cardiorespiratory Fitness, Birth Weight, and Parental BMI on Adolescents' Obesity Status
Résumé
Background/Objectives: The aims of this study was (1) to analyze differences in cardio respiratory fitness (CRF), parents' body mass index (BMI) and birth weight (BW) between non-overweight (NOW) and overweight/obese (OV/OB) adolescents, and (2) to investigate the association of those variables with the risk of their biological offspring being OV/OB. Subjects/Methods: This study comprised 788 adolescents (477 girls), aged from 12-18 years old. CRF was predicted by maximal multistage 20m shuttle-run test according to procedures described in FITNESSGRAM. Children's BMI was classified according to IOTF. Adolescent's BW was assessed by each child's pediatric record at birth. Parent's OV/OB status was defined and classified according to WHO. Socioeconomic status was defined by parental education. Results: The prevalence OV/OB was 21.4% and 5.3 %, respectively and there were no gender differences. The OV/OB adolescents (girls and boys) had significantly (p≤0.05) lower CRF scores and higher BW (p≤0.05) than the NOW pears. 92.9% of OV/OB girls had one or two parents with OV/OB (p≤0.05). Boys with low CRF (OR: 3.75; p≤0.05) and high BW (OR: 1.65; p≤0.05) were more likely to be classified as OV/OB compared with NOW. Girls with low CRF (OR: 2.66; p≤0.05), high BW (OR: 2.09; p≤0.05) and at least one parent (OR: 2.28; p≤0.05) or two parents with OV/OB (OR: 4.39; p≤0.05, respectively) were associated with being OV/OB. Conclusions: Results from this study highlight association between the family adolescents' obesity, in girls. Further our data suggested that low CRF and high BW were strong predictors of OV/OB in adolescence.
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