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Plasma Leptin, Plasma Zinc, and Plasma Copper Are Associated in Elite Female and Male Judo Athletes

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Abstract

The purpose of this study was to compare plasma leptin, plasma zinc, and plasma copper levels and their relationship in trained female and male judo athletes (n = 10 women; n = 8 men). Blood samples were obtained 24 h after training to measure plasma zinc, copper, and leptin levels. Subjects presented similar values to age (22 ± 2 years old), body mass index (24 ± 1 kg/m2), plasma zinc (17.2 ± 2 μmol/L), copper (12.5 ± 2 μmol/L), and leptin (5.6 ± 1.3 μg/L). However, height, total body mass, lean mass, fat mass, and sum of ten-skinfold thickness were higher in male than female. Plasma leptin was associated with sum of ten skinfolds in male (r = 0.91; p < 0.001) and female athletes (r = 0.84; p < 0.003). Plasma zinc was associated with leptin in males (r = 0.82; p < 0.05) while copper was associated with plasma leptin in females (r = 0.66; p < 0.05). Our results suggest that young judo athletes lost sex-related differences in leptin levels. Plasma zinc, plasma copper, and energy homeostasis may be involved in regulation of plasma leptin.

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Authors and Affiliations

  1. Núcleo de Estudos em Nutrição e Fatores de Estresse, Departamento de Nutrição Básica e Experimental, Instituto de Nutrição, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, bloco D sala 12006, CEP 20550-900, Rio de Janeiro, Brazil

    Emilson Souza Portella & Josely Correa Koury

  2. Laboratório de Bioquímica Nutricional e de Alimentos, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil

    Carmen Marino Donangelo & Josely Correa Koury

  3. Laboratório de Fisiologia Endócrina, Departamento de Ciências Fisiológicas, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil

    Gustavo Casimiro-Lopes, Patrícia Cristina Lisboa & Egberto Gaspar de Moura

  4. Laboratório de Cineantropometria e Eletromiografia, Departamento de Ciências da Atividade Física, Instituto de Educação Física e dos Desportos, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil

    Astrogildo Vianna de Oliveira-Junior

Authors
  1. Gustavo Casimiro-Lopes
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  2. Astrogildo Vianna de Oliveira-Junior
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  3. Emilson Souza Portella
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  4. Patrícia Cristina Lisboa
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  5. Carmen Marino Donangelo
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  6. Egberto Gaspar de Moura
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  7. Josely Correa Koury
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Correspondence to Josely Correa Koury.

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Casimiro-Lopes, G., de Oliveira-Junior, A.V., Portella, E.S. et al. Plasma Leptin, Plasma Zinc, and Plasma Copper Are Associated in Elite Female and Male Judo Athletes. Biol Trace Elem Res 127, 109–115 (2009). https://doi.org/10.1007/s12011-008-8236-2

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  • DOI: https://doi.org/10.1007/s12011-008-8236-2

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