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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Comparisons of physical activity, adipokines, vitamin D status and dietary vitamin D intake among adolescents

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Autor(es):
Giudici, K. V. ; Fisberg, R. M. ; Marchioni, D. M. ; Martini, L. A.
Número total de Autores: 4
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF HUMAN NUTRITION AND DIETETICS; v. 30, n. 3, p. 369-377, JUN 2017.
Citações Web of Science: 2
Resumo

BackgroundConsidering that lifestyle and diet are key factors responsible for the increases in adiposity in youth, it is important to understand how vitamin D, adipokines and markers of glucose metabolism are related to physical activity level (PAL) during growth. The present study aimed to investigate associations between physical activity level, adiponectin/leptin ratio, vitamin D status and dietary vitamin D intake among adolescents. MethodsA cross-sectional study was conducted with adolescents aged 14-18 years old who were living in SAo Paulo, Brazil. Serum 25 hydroxyvitamin D {[}25(OH)D], adiponectin (A), leptin (L), glucose and insulin were obtained after 12 h of fasting. Dietary calcium and vitamin D intake were measured by 24-h food record, as repeated in 62.6% of the sample. PAL was measured by the International Physical Activity Questionnaire (IPAQ). Pearson's chi-square test, Pearson correlation and linear regression analysis were performed. ResultsA total of 198 subjects, mean (SD) age 16.3 (1.4) years, 51% male, were enrolled in the study. Some 9% of participants were sedentary, 22% were insufficiently active (IA), 51% were active and 18% were very active (VA). The A/L ratio was lower among sedentary/IA subjects {[}2.2 (4.0) versus 5.6 (12.3); P = 0.01] compared to active/VA subjects. PAL was not associated with vitamin D status or markers of glucose metabolism. Serum 25(OH)D positively associated with vitamin D intake, after adjusting for sex, sun exposure and season of the year in regression analysis (partial r(2)=0.026, P = 0.02). ConclusionsLow PAL was associated with a lower A/L ratio. Vitamin D status was not associated with sun exposure habits, although it was positively correlated with vitamin D intake. (AU)

Processo FAPESP: 12/11061-8 - Relação entre tecido adiposo e tecido ósseo: interação metabólica entre vitamina D, osteocalcina e adipocinas em adolescentes
Beneficiário:Ligia Araujo Martini
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 11/22768-2 - Relação entre tecido adiposo e tecido ósseo: interação metabólica entre vitamina D, genótipos para receptor de vitamina D, osteocalcina e leptina em adolescentes
Beneficiário:Kelly Virecoulon Giudici
Linha de fomento: Bolsas no Brasil - Doutorado Direto