Effects of Ramadan Intermittent Fasting on Gut Hormones and Body Composition in Males with Obesity

Hassane Zouhal, Reza Bagheri, Raoua Triki, Ayoub Saeidi, Alexei Wong, Anthony C. Hackney, Ismail Laher, Katsuhiko Suzuki and Abderraouf Ben Abderrahman
Additional contact information
Hassane Zouhal: Laboratoire Mouvement, Sport, Santé (M2S)-EA 1274, Université Rennes, F-35000 Rennes, France
Reza Bagheri: Department of Exercise Physiology, University of Isfahan, Isfahan 8174673441, Iran
Raoua Triki: ISSEP Ksar Said, University of La Manouba, Tunis 2000, Tunisia
Ayoub Saeidi: Department of Physical Education, Damghan Branch, Islamic Azad University, Damghan 3671637849, Iran
Alexei Wong: Department of Health and Human Performance, Marymount University, Arlington, VA 22207, USA
Anthony C. Hackney: Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC 27599, USA
Ismail Laher: Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada
Katsuhiko Suzuki: Faculty of Sport Sciences, Waseda University, Tokorozawa 359-1192, Japan
Abderraouf Ben Abderrahman: ISSEP Ksar Said, University of La Manouba, Tunis 2000, Tunisia

IJERPH, 2020, vol. 17, issue 15, 1-15

Abstract: We studied the effects of Ramadan intermittent fasting (RIF) on gut hormones (leptin, glucagon-like peptide-1 (GLP-1), peptide YY (PYY), cholecystokinin (CCK), and ghrelin) in males with obesity. Thirty sedentary males were randomly allocated to either an experimental group (EG, n = 15) or a control group (CG, n = 15). The EG group completed their Ramadan fasting rituals (30 days), whereas the CG continued with their normal daily habits. Blood samples were collected at four time points: 24 h before the start of Ramadan (T0), on the 15th day of Ramadan (T1), the day after the end of Ramadan (T2) and 21 days after Ramadan (T3). There were significant pre-to-post improvements for leptin ( p = 0.01, d = 1.52), GLP-1 ( p = 0.022, d = 0.75), PYY ( p = 0.031, d = 0.69) and CCK ( p = 0.027, d = 0.81) in the EG, with no interaction effect for ghrelin ( p = 0.74; d = 0.008). No significant changes ( p > 0.05) occurred in plasma volume variations (ΔPV) after RIF in both EG (−0.03 ± 0.01%) and CG (0.06 ± 0.07%). RIF represents an effective strategy to modify appetite-regulating hormones, leading to improved body composition indices and reduced obesity.

Keywords: obese; overweight; gut hormones; fasting; body composition (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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