title: Effect of physical activity intervention on body composition in young children: influence of body mass index status and gender.
abstract: OBJECTIVE
  To fight overweight and obesity in childhood, this study proposes an additional physical activity (PA) in young children aged 6-10 years. The objective was to evaluate the effect of school-based PA on the body composition according to body mass index (BMI) categories (nonobese vs. obese) and gender.
  
  
  METHODS
  This 6-month study examined the effect of this intervention on body composition in 425 children in 14 primary schools (2 weekly PA sessions of 1 h each) compared to 5 control schools. Adiposity indices were evaluated or calculated: BMI, BMI z-score, waist circumference, sum of skinfolds and fat-free mass.
  
  
  RESULTS
  No difference in the prevalence of obesity and anthropometric characteristics was found between the intervention and control groups at baseline. In girls, PA intervention had significant effect on all anthropometric variables (p < 0.05 to p < 0.001), except on BMI. In contrast, in boys only BMI z-score (p < 0.001) and fat-free mass (p < 0.001) were affected.
  
  
  CONCLUSIONS
  Six months of preventive PA intervention offer an effective means to improve body composition in obese children. The pattern of response related to PA was similar between girls and boys. In contrast, the pattern was different according to BMI category, with a higher response in obese than nonobese children.
authors: Laboratoire Inter-Universitaire de Biologie des Activités Physiques et Sportives, UFR STAPS, Université Blaise Pascal, Aubière, France.
authors: Nordine
authors: N
authors: Lazaar
authors: Julien
authors: J
authors: Aucouturier
authors: Sébastien
authors: S
authors: Ratel
authors: Mélanie
authors: M
authors: Rance
authors: Martine
authors: M
authors: Meyer
authors: Pascale
authors: P
authors: Duché
mesh_terms: D000886:Anthropometry; D001823:Body Composition; D015992:Body Mass Index; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity; D009765:Obesity / Q000453:epidemiology / Q000517:prevention & control; D015995:Prevalence; D012572:School Health Services; D012737:Sex Factors
references: Lancet. 2006 Jul 22;368(9532):299-304
references: 16860699
references: Eur J Clin Nutr. 2007 Apr;61(4):509-16
references: 16988644
references: Am J Clin Nutr. 2004 May;79(5):913S-920S
references: 15113739
references: Int J Obes Relat Metab Disord. 2004 Apr;28(4):483-93
references: 14993915
references: Int J Obes Relat Metab Disord. 2004 Feb;28(2):290-9
references: 14970838
references: Med Sci Sports Exerc. 2004 Jan;36(1):86-92
references: 14707773
references: Pediatrics. 1998 Mar;101(3 Pt 2):518-25
references: 12224658
references: J Endocrinol Invest. 2002 Feb;25(2):134-41
references: 11929084
references: Br J Nutr. 2002 Feb;87(2):163-75
references: 11895169
references: Nutr Rev. 2001 Jun;59(6):170-6
references: 11444593
references: Acta Paediatr. 2001 Apr;90(4):387-92
references: 11332928
references: Eur J Pediatr. 2000 Sep;159 Suppl 1:S14-34
references: 11011953
references: BMJ. 2000 May 6;320(7244):1240-3
references: 10797032
references: Med Sci Sports Exerc. 1999 Nov;31(11 Suppl):S553-9
references: 10593527
references: J Pediatr. 1997 Aug;131(2):288-92
references: 9290618
references: Arch Pediatr Adolesc Med. 2005 Oct;159(10):996-7
references: 16203950
references: Arch Pediatr Adolesc Med. 2005 Oct;159(10):963-8
references: 16203942
references: J Pediatr. 2005 Jun;146(6):732-7
references: 15973308
references: Int J Obes Relat Metab Disord. 1999 Mar;23(3):253-9
references: 10193870
references: Am J Prev Med. 1998 Nov;15(4):298-315
references: 9838974
references: Am J Clin Nutr. 1998 Nov;68(5):1006-11
references: 9808215
references: JAMA. 1998 Mar 25;279(12):938-42
references: 9544768
references: Int J Obes Relat Metab Disord. 1997 May;21(5):380-6
references: 9152740
references: Int J Obes Relat Metab Disord. 1997 Mar;21(3):171-8
references: 9080254
references: J Pediatr Gastroenterol Nutr. 1996 Oct;23(3):256-61
references: 8890075
references: Arch Dis Child. 1971 Apr;46(246):182-4
references: 5576028
references: Pediatr Res. 1990 Feb;27(2):198-203
references: 2314950
references: Eur J Clin Nutr. 1991 Jan;45(1):13-21
references: 1855495