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Estudo Geral
Master thesis . 2015
Data sources: Estudo Geral
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Composição corporal em voleibolistas adolescentes do sexo feminino : concordância entre as metodologias absorciometria de raio-X de dupla energia, pletismografia de ar deslocado e equações antropométricas

Authors: Silva, Maria Alexandra Agostinho;

Composição corporal em voleibolistas adolescentes do sexo feminino : concordância entre as metodologias absorciometria de raio-X de dupla energia, pletismografia de ar deslocado e equações antropométricas

Abstract

As características antropométricas das voleibolistas parecem estar determinantemente ligadas à qualidade do seu desempenho, assumindo um papel significativo no sucesso desportivo que se pode alcançar na modalidade. Objetivos: Analisar a precisão de equações antropométricas para estimar a massa gorda (MG) na voleibolista adolescente do sexo feminino, tendo como referência as metodologias de pletismografia de ar deslocado (ADP) e absorciometria de raio-X de dupla energia (DXA). Métodos: A amostra inclui 36 voleibolistas femininas (16.75 ± 1.03 anos). A MG foi, assim, estimada por DXA, ADP e equações antropométricas estabelecidas por Slaughter et al. (1988). Recorreu-se à regressão linear múltipla para determinar a quantidade de variância explicada da MG relativa estimada por ADP e DXA. Resultados: Os dados parecem sugerir uma sobrestimativa da percentagem (%) de MG pela equação 1 (decorrente do somatório das pregas Tricipital e Subescapular) em relação à equação 2 (decorrente do somatório das pregas Tricipital e Geminal Medial) de Slaughter et al. (1988). Verifica-se, igualmente, uma sobrestimativa por parte do método antropométrico em relação à ADP, em ambas as equações. Adicionalmente, verifica-se uma subestimativa por parte do método antropométrico em relação à DXA. Conclusões: As equações propostas por Slaughter et al. (1998) não parecem ser adequadas para estimar a % de MG em jovens voleibolistas femininas. Para o efeito, o conjunto mais robusto de preditores, identificado pelo presente estudo, foi a massa corporal, prega bicipital ou subescapular e a prega geminal medial. The anthropometric characteristics of volleyball players seem to be fully linked to the quality of their performance, assuming a significant role in the level that they can achieve in the sport. Objectives: The aim of the current study was to analyse the precision of anthropometric equations to estimate fat mass (FM) in youth female volleyball players, using Whole-body air displacement plethysmography (ADP) and Dual- Energy X-Ray Absorptiometry (DXA) as the reference methods. Methods: The sample included 36 female volleyball players (16.75 ± 1.03 years). FM was thus estimated by ADP, DXA and by the anthropometric equations of Slaughter et al. (1988). Multiple linear regressions were used to identify FM mathematical models with the best statistical fit. Results: Data seem to suggest an over-estimation of the %FM by equation 1 (resulting from the sum of triceps and subscapular skinfolds) when compared to equation 2 (resulting from the sum of triceps and medial calf skinfolds) of Slaughter et al. (1988). There is, also, a trend for over-estimation of the anthropometric method in relation to ADP, in both equations. Additionally, there is a trend for underestimation of the anthropometric method in relation to the DXA. Conclusions: The equations proposed by Slaughter et al. (1998), does not seem to be suitable for FM estimations in young female volleyball players. For this purpose, the most robust set of predictors, identified by this study, was body mass, biceps or subscapular skinfolds and medial calf skinfold.

Dissertação de mestrado em Treino Desportivo para Crianças e Jovens, apresentada à Faculdade de Ciências do Desporto e Educação Física da Universidade de Coimbra

Country
Portugal
Related Organizations
Keywords

Voleibol, Antropometria

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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