Calcium intake and its relationship with adiposity and insulin resistance in post-pubertal adolescents

Calcium intake and its relationship with adiposity and insulin resistance in post-pubertal adolescents

Author Santos, L. C. dos Google Scholar
Cintra, I. de Padua Autor UNIFESP Google Scholar
Fisberg, M. Autor UNIFESP Google Scholar
Martini, L. A. Google Scholar
Institution Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract Background Dietary calcium intake has been described as being a negative contributor to adiposity. in adolescents, this relationship is not well established. the objectives of the present study were to compare the calcium intake of normal-weight and obese adolescents and to evaluate its relationship with adiposity and insulin resistance.Methods A cross-sectional analysis of 96 post-pubertal adolescents; 47 normal weight and 49 obese, mean age 16.6 (SD +/- 1.3) years. Body composition was assessed by dual-energy X-ray absorptiometry. Dietary intake was evaluated using a 3-day dietary record. the biochemical evaluation comprised the measurements of serum lipids, lipoproteins, glucose and insulin. Insulin resistance was calculated using the Homeostasis Model Assessment of Insulin resistance (HOMA-IR).Results the mean calcium intake, adjusted for energy, was lower in obese adolescents, 585.2 (+/- 249.9) mg, than in normal weight adolescents, 692.1 (+/- 199.5) mg. Only 4% of adolescents had an adequate intake of calcium. Calcium intake was inversely associated with body trunk fat, insulin and HOMA-IR in the obese group. the quartile analysis of calcium intake provided evidence that girls in the highest quartile had decreased adiposity and insulin resistance.Conclusions This study showed a negative relationship between calcium intake and body fat and insulin resistance, mainly in obese girls, and demonstrates the importance of an increased dietary calcium intake.
Keywords adolescents
body fat
calcium
insulin resistance
obesity
Language English
Date 2008-04-01
Published in Journal of Human Nutrition and Dietetics. Hoboken: Wiley-Blackwell, v. 21, n. 2, p. 109-116, 2008.
ISSN 0952-3871 (Sherpa/Romeo, impact factor)
Publisher Wiley-Blackwell
Extent 109-116
Origin http://dx.doi.org/10.1111/j.1365-277X.2008.00848.x
Access rights Closed access
Type Article
Web of Science ID WOS:000253979500002
URI http://repositorio.unifesp.br/handle/11600/30583

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