Physical activity and 3-year BMI change in overweight and obese children.
Pediatrics
; 131(2): e470-7, 2013 Feb.
Article
em En
| MEDLINE
| ID: mdl-23319527
ABSTRACT
OBJECTIVES:
Targeting physical activity (PA) is a mainstay in obesity treatment, but its BMI benefits are poorly quantified. We studied long-term predictive PA-BMI relationships in overweight/obese children presenting to primary care.METHODS:
Three-year follow-up of 182 overweight/obese 5- to 10-year-olds recruited from 45 Melbourne general practices. PREDICTOR 7-day accelerometry (counts per minute, cpm).OUTCOMES:
change in BMI z score, BMI category, and clinically significant BMI improvement (z score change ≥0.5).ANALYSIS:
Linear and logistic regression.RESULTS:
Mean (SD) baseline and 3-year BMI z scores were 1.8 (0.6) and 1.8 (0.7), and mean (SD) activity scores 334 (111) and 284 (104) cpm, respectively. Baseline activity did not predict BMI change. However, for every 100 cpm increase in change in activity over 3 years, BMI z score fell by 0.11 (95% confidence interval [CI] 0.03-0.20; P = .006). There were also trends toward greater odds of staying in the same, versus moving to a higher, BMI category (odds ratio 1.85, 95% CI 0.99-3.46) and clinically significant BMI improvement (odds ratio 1.96, 95% CI 0.90-4.27; P = .09). Change in percentage time spent in moderate-vigorous (P = .01), but not sedentary (P = .39) or light (P = .59), activity predicted reduced BMI z score.CONCLUSIONS:
Sustained increase in moderate-vigorous PA predicts reducing BMI z score over 3 years in overweight/obese children presenting to primary care. However, the small BMI change associated with even the largest activity changes may explain disappointing BMI outcomes of brief primary care interventions targeting PA.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
11_ODS3_cobertura_universal
Base de dados:
MEDLINE
Assunto principal:
Índice de Massa Corporal
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Sobrepeso
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Atividade Motora
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Obesidade
Tipo de estudo:
Clinical_trials
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Etiology_studies
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Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Aspecto:
Equity_inequality
Limite:
Child
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Child, preschool
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Female
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Humans
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Male
Idioma:
En
Revista:
Pediatrics
Ano de publicação:
2013
Tipo de documento:
Article