{
  "abstract": "Background/Objectives: Many adolescent athletes fast during Ramadan, similar to adults. However, research on Ramadan fasting during adolescence, a critical period for growth and development, is insufficient. This study aimed to examine changes in nutritional status and sport-specific performance during Ramadan in adolescent volleyball players and to explore whether these changes differed by Ramadan fasting adherence. Methods: This prospective cohort study included 35 male adolescent volleyball players (age: 16.43 ± 1.29 years, height: 1.75 ± 0.07 m, training experience: 6.20 ± 2.13 years) who fasted during Ramadan. Energy and macronutrient intake, anthropometric measurements, and sport-specific performance tests were conducted before, during, and at the end of Ramadan, and biochemical parameters were measured before and at the end of Ramadan. Results: Fat intake decreased during and at the end of Ramadan (1.60 ± 0.16 and 1.52 ± 0.15 g/kg BW, respectively; p = 0.021). Energy and macronutrient intakes were generally consistent with recommended levels, whereas fluid intake remained relatively low (1.60 ± 0.11 L, 1.35 ± 0.09 L, 1.44 ± 0.10 L, respectively). Anthropometric measurements remained unchanged. Left-hand grip strength (p = 0.006), 20 m sprint performance (p < 0.001), and agility performance (p = 0.002) decreased over the study period. Significant group effects were observed for 5 m, 10 m, and 20 m sprint, SJ, and standing long jump performances according to fasting adherence. Chloride, urea, and the BUN/creatinine ratio increased at the end of Ramadan, whereas albumin and potassium remained unchanged. Conclusions: In adolescent male volleyball players, Ramadan fasting may be associated with changes in dietary intake, certain sport-specific performance measures, and biochemical parameters potentially related to hydration status.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Nutrition and Dietetics, Institute of Health Sciences, , Göztepe Neighborhood, Kavacık, Atatürk Street No. 40, Beykoz, Istanbul 34810, Turkey;"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Eda Elif Delice"
    },
    {
      "affs": [
        0
      ],
      "name": "Gülgün Ersoy"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e936hn5ays9b1.bib",
  "cited_by": 0,
  "doi": "10.3390/nu18193227",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666602/?tool=EBI",
  "id": "e936hn5ays9b1",
  "issns": [
    "2072-6643"
  ],
  "landing_url": "https://europepmc.org/article/PMC/PMC13666602",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2737|Dietary Effects on Health"
    ]
  ],
  "openalex": "W7214889931",
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666602/pdf/?tool=EBI",
  "pmcid": "PMC13666602",
  "pmid": null,
  "published": "2026-09-30",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/e936hn5ays9b1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:35Z",
      "native_id": "PMC:PMC13666602",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13666602"
    },
    {
      "first_seen": "2026-10-30T12:19:56Z",
      "native_id": "10.3390/nu18193227",
      "source": "crossref",
      "url": "https://www.mdpi.com/2072-6643/18/19/3227"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2737|Dietary Effects on Health",
      "subfield": "physiology"
    }
  ],
  "title": "Changes in Nutritional Status and Sport-Specific Performance During Ramadan in Adolescent Male Volleyball Players: A Prospective Cohort Study",
  "title_text": "Changes in Nutritional Status and Sport-Specific Performance During Ramadan in Adolescent Male Volleyball Players: A Prospective Cohort Study",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:56Z",
  "url": "https://research.draconitic.com/paper/e936hn5ays9b1",
  "venue": "Nutrients",
  "versions": []
}