Overnutrition, undernutrition and the body mass index: implications for strength and motor fitness

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Bibliographische Detailangaben
Deutscher übersetzter Titel:Ueber- und Unterernaehrung und Koerpermasseindex: Auswirkungen auf Muskelkraft und motorische Fitness
Autor:Malina, R.M.; Katzmarzyk, P.T.; Siegel, S.R.
Herausgeber:Parizkova, Jana; Hills, Andrew P.
Erschienen in:Physical fitness and nutrition during growth: studies in children and youth in different environments
Veröffentlicht:Basel: Karger (Verlag), 1998, 1998. S. 13-26, Lit., Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Sammelwerksbeitrag
Medienart: Gedruckte Ressource
Sprache:Englisch
ISBN:3805566794
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Erfassungsnummer:PU199810304677
Quelle:BISp

Abstract des Autors

Relationships between the BMI and strength and motor fitness were compared in American children 6-13 years of age with a history of good nutritional status and in rural Mexican children 6-14 years of age with a history of chronic mild-to-moderate undernutrition. Age-standardized z-scores for the BMI are positively and significantly associated with grip strength within each sex and ethnic group. Correlations between the BMI and the jump and dash are not consistent by sex and ethnicity. The results suggest that a larger BMI tends to have a negative influence on the performance of tasks requiring the projection of the body in well-nourished children. The lack of a negative influence of the BMI on the performance involving displacement of body mass in the mild-to-moderately undernourished children may suggest a threshold level above which excessive fatness (i.e., a high BMI) exerts a negative influence on performance. The trend also highlights the important contribution of lean tissue to the BMI. The BMI was also used as the criterion for overweight, normal weight and underweight. There are clear differences in strength and motor fitness between underweight, normal weight and overweight children. Results of discriminant function analyses suggest that the BMI has a different meaning for the strength and motor fitness of the rural Mexican children compared to better nourished American children. The results also have implications for the interpretation of the BMI in developing countries, which has been highlighted previously in adults. Verf.-Referat