Classic vs. High-Fat Intermittent Fasting: Impacts on Body Composition, Eating Behaviour, and Diet Satisfaction

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dc.authorid0000-0002-4761-6836
dc.contributor.authorIzgi, Beyza
dc.contributor.authorKenger, Emre Batuhan
dc.date.accessioned2026-04-04T18:55:53Z
dc.date.available2026-04-04T18:55:53Z
dc.date.issued2025
dc.departmentİstanbul Bilgi Üniversitesi
dc.description.abstractThis study aimed to examine the effects of two different intermittent fasting protocols, distinguished by macronutrient distribution (classical intermittent fasting versus high-fat, low-carbohydrate intermittent fasting), on body composition, eating behaviour, and diet satisfaction. The study was conducted at a single centre and included 44 adult women who consulted a dietitian. Participants were randomly assigned, in a single blind manner, to one of two groups. The diet interventions were applied for six weeks; all participants completed this period. Body composition, eating behaviour, and diet satisfaction were evaluated. Data were analysed using SPSS version 21.0. The dietary interventions resulted in significant improvements in body composition in both groups (p < 0.05); however, no significant differences were observed between the groups compared to baseline (p > 0.05). Participants' eating behaviour improved across all subscales in both groups (p < 0.05). Importantly, the classical diet group showed significantly greater improvements compared to baseline in cognitive restraint (adjusted post-intervention mean: 19.66 vs. 17.38; p = 0.006) and emotional eating (adjusted post-intervention mean: 9.66 vs. 12.97; p < 0.001) compared to the high-fat group. Satisfaction with the diet did not differ significantly between groups (classical: 41.0; high-fat: 34.0) (p = 0.063). This study demonstrated that classical and high-fat intermittent fasting models led to improvements in body composition and eating behaviour compared to baseline measurements. Further research with longer durations and diverse populations, including men, is needed to fully understand the impact of macronutrient distribution within intermittent fasting.
dc.identifier.doi10.1111/nbu.70021
dc.identifier.doi10.1111/nbu.70021
dc.identifier.endpage496
dc.identifier.issn1471-9827
dc.identifier.issn1467-3010
dc.identifier.issue3
dc.identifier.pmid40665688
dc.identifier.scopus2-s2.0-105010959278
dc.identifier.scopusqualityQ2
dc.identifier.startpage486
dc.identifier.urihttps://doi.org/10.1111/nbu.70021
dc.identifier.urihttps://hdl.handle.net/11411/10606
dc.identifier.volume50
dc.identifier.wosWOS:001529834100001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofNutrition Bulletin
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260402
dc.snmzKA_Scopus_20260402
dc.subjectBody Composition
dc.subjectDiet Satisfaction
dc.subjectEating Behaviour
dc.subjectIntermittent Fasting Diet
dc.titleClassic vs. High-Fat Intermittent Fasting: Impacts on Body Composition, Eating Behaviour, and Diet Satisfaction
dc.typeArticle

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