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The impact of Ramadan intermittent fasting on anthropometric measurements and body composition: Evidence from LORANS study and a meta-analysis.
Al-Jafar, Rami; Wahyuni, Nisa Sri; Belhaj, Karim; Ersi, Mohammad Hamed; Boroghani, Zahra; Alreshidi, Amer; Alkhalaf, Zahra; Elliott, Paul; Tsilidis, Konstantinos K; Dehghan, Abbas.
Afiliación
  • Al-Jafar R; Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom.
  • Wahyuni NS; Department of Data Services, Lean Business Services, Riyadh, Saudi Arabia.
  • Belhaj K; Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom.
  • Ersi MH; Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom.
  • Boroghani Z; Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
  • Alreshidi A; Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
  • Alkhalaf Z; Clinical Research Development of Shahid Mohammadi Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
  • Elliott P; Pharmaceutical Care Department, Hail General Hospital, Hail Health Cluster, Ministry of Health, Hail, Saudi Arabia.
  • Tsilidis KK; Dammam Medical Complex, Medical and Clinical Affairs, Dammam, Saudi Arabia.
  • Dehghan A; Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom.
Front Nutr ; 10: 1082217, 2023.
Article en En | MEDLINE | ID: mdl-36733380
Background: Although the effect of Ramadan intermittent fasting (RIF) on anthropometry and body composition has been questioned, none of the previous studies tried to explain the reported changes in these parameters. Also, systematic reviews that investigated the topic were limited to healthy individuals or a specific disease group. Methods: The London Ramadan Study (LORANS) is an observational study on health effects of RIF. We measured weight, waist circumference (WC), hip circumference (HC), body mass index (BMI), waist-to-hip ratio (WHR), basal metabolic rate (BMR), fat percentage (FP), free-fat mass (FFM), extremities predicted muscle mass, total body water (TBW), trunk FM, trunk FFM and trunk predicted muscle mass before and immediately after Ramadan. Using mixed-effects regression models, we investigated the effect of RIF with adjustment for potential confounders. We also conducted a meta-analysis of the results of LORANS with other studies that investigated the effect of RIF on anthropometry and body composition. The review protocol is registered with PROSPERO registry (CRD42020186532). Results: We recruited 146 participants (Mean ± SD age = 43.3 ± 15 years). Immediately after Ramadan, compared with before Ramadan, the mean difference was-1.6 kg (P<0.01) in weight,-1.95cm (P<0.01) in WC,-2.86cm (P <0.01) in HC, -0.60 kg/m2 (P < 0.01) in BMI and -1.24 kg (P < 0.01) in FM. In the systematic review and meta-analysis, after screening 2,150 titles and abstracts, 66 studies comprising 7,611 participants were included. In the general population, RIF was followed by a reduction of 1.12 Kg in body weight (-1.89- -0.36, I2 = 0), 0.74 kg/m2 reduction in BMI (-0.96- -0.53, I2 = 0), 1.54cm reduction in WC (-2.37- -0.71, I2 = 0) and 1.76cm reduction in HC (-2.69- -0.83, I2 = 0). The effect of fasting on anthropometric and body composition parameters starts to manifest in the second week of Ramadan and starts to diminish 3 weeks after Ramadan. Conclusion: RIF is associated with a reduction in body weight, BMI, WC, HC, FM, FP and TBW. Most of these reductions are partially attributed to reduced FM and TBW. The reductions in these parameters appear to reverse after Ramadan.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Observational_studies / Prognostic_studies / Systematic_reviews Idioma: En Revista: Front Nutr Año: 2023 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Suiza

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Observational_studies / Prognostic_studies / Systematic_reviews Idioma: En Revista: Front Nutr Año: 2023 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Suiza