Resumo

GOMEZ PEREZ, Roald et al. Homair, quicki y leptina en adolescentes deportivas. Rev. Venez. Endocrinol. Metab. [online]. 2005, vol.3, n.3, pp.30-35. ISSN 1690-3110.

Objective : Evaluate the insulin resistance and insulin sensitivity indexes in sport-players adolescents and, examine the relationship between these two indexes with body mass index, lipids and leptin serum levels. Methods: We studied 52 Tanner IV stage sport-players adolescents: 39 males and 13 females with ages between 14 and 17 years. Height, weight and body mass index (BMI) were registered. Fasting glucose, insulin, leptin, triglycerides (Tg), total cholesterol CT, LDL-C, and HDL-C levels were measured. HOMA IR and QUICKI indexes were calculated. Results : No significant differences in glycemia and insulin serum levels were found. HOMA IR mean value was 1.11 ± 0.52 for males and 1.02 ± 0.43 for girls. QUICKI mean value was 0.384 ± 2.68 for boys, and 0.388 ± 2.46 for girls. Leptin serum levels were significantly higher in girls group (p<.001). Plasma triglycerides levels were non significantly higher in males, similar tendency was observed in total cholesterol in female group. In both genders the IMC index was positively correlated with leptin serum concentration, and negatively with to insulin sensitivity index. Triglycerides were positively correlated with IMC index in boys group. Conclusions: HOMA IR and the QUICKI index values in sport-players adolescents seem to be similar to those reported in adults with normal BMI. Leptin sexual dimorphism was clearly observed. The negative correlation between the QUICKI index and IMC might suggests this index is a good insulin sensitivity marker related to ponderosity.

Palavras-chave : HOMAIR; QUICKI; leptin; sport-players adolescents.