Ramadan Fasting’s Effect on Plasma Leptin, Adiponectin Concentrations, and Body Composition in Trained Young Men

• Ezzedine Bouhlel ; Myriam Denguezli ^[1] ; Monia Zaouali ; Zouhair Tabka ; Roy J. Shephard
  1. [1] Faculté de Médecine Dentaire de Monastir, Sciences Fondamentales. Monastir, Tunisia
• Localización: International journal of sport nutrition and exercise metabolism, ISSN 1526-484X, ISSN-e 1543-2742, Vol. 18, Nº. 6, 2008, págs. 617-627
• Idioma: inglés
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• Resumen

  • Purpose:

    To evaluate the effect of Ramadan fasting on parameters of insulin resistance in trained athletes at rest and after aerobic exercise.

    Methods:

    Nine male rugby players (age 19 ± 2 yr, height 1.78 ± 0.74 m) were tested 3 times: 1 week before observance of Ramadan (C), at the end of the first week (R1), and during the fourth week (R2). They performed a progressive cycle-ergometer test at each visit. Data collected at rest and at the end of aerobic exercise included simple anthropometry (body mass, body-mass index, body fat, fat-free mass), biochemical parameters (serum glucose, cholesterol, HDL cholesterol, triglycerides, creatinine, and serum proteins), and selected hormone concentrations (plasma insulin, leptin, and adiponectin).

    Results:

    Ramadan fasting was associated with a reduction of body mass and body fat (R2 vs. C, p < .01) without significant change in leptin or adiponectin levels.

    Conclusion:

    Lipolysis might have occurred because of increased plasma triglycerides and HDL cholesterol concentrations.