Are muscular and cardiovascular fitness partially programmed at birth? Role of body composition.
J Pediatr
; 154(1): 61-66.e1, 2009 Jan.
Article
em En
| MEDLINE
| ID: mdl-18783796
OBJECTIVE: To determine whether birth weight is associated with handgrip strength and cardiovascular fitness in adolescence and, if so, how these associations are influenced by current body composition. STUDY DESIGN: A total of 1801 adolescents (983 females), age 13 to 18.5 years, from the AVENA (Alimentación y Valoración del Estado Nutricional de los Adolescentes Españoles [Food and Assessment of the Nutritional Status of Spanish Adolescents]) study were evaluated. Handgrip strength and cardiovascular fitness were assessed using the handgrip test and the 20-m shuttle run test, respectively. RESULTS: Birth weight was positively associated with handgrip strength in females after controlling for current age, gestational age, breast-feeding, and adolescent body mass index (P = .002), body fat percentage (P < .001), or waist circumference (P = .005), but not after controlling for fat-free mass. The associations were similar yet weaker in males. Females with high birth weight (>90th percentile) had greater handgrip strength than those with normal (10th to 90th percentile) or low (<10th percentile) birth weight, after adjusting for body fat percentage (P = .004). All of the differences became nonsignificant after adjusting for adolescent fat-free mass. Birth weight was not associated with cardiovascular fitness. CONCLUSIONS: High birth weight is associated with greater handgrip strength in adolescents, especially in females, yet these associations seem to be highly explained by fat-free mass.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Peso ao Nascer
/
Aptidão Física
Limite:
Adolescent
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Female
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Humans
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Male
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Newborn
Idioma:
En
Revista:
J Pediatr
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Espanha
País de publicação:
Estados Unidos