Placebo Caffeine in Soccer Players: Effects on Physiological Markers and Perceived Sleep Quality

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dc.contributor.authorGüneser, Ezel
dc.contributor.authorAkça, Firat
dc.contributor.authorYildirim, Ulas Can
dc.date.accessioned2025-03-23T18:54:32Z
dc.date.available2025-03-23T18:54:32Z
dc.date.issued2024
dc.departmentSinop Üniversitesi
dc.description.abstractNot all questions regarding the physiological and psychological effects of caffeine have been answered yet. However, it is understood that athletes experience varying effects on physiological markers and sleep quality due to caffeine. This study aimed to examine the alterations in aerobic capacity and perceived sleep quality among football players when exposed to different doses of placebo gum. Twenty-two male players from an amateur football team (average age: 23,36 ± 5,4 years, height: 180,14 ± 6,9 cm; weight: 76,32 ± 10,2 kg; BMI: 23,51 ± 2,8 kg/ m2) participated voluntarily, and the study was designed as a randomized, crossover, single-blind trial. Following the ingestion of placebo gum for 5 minutes, the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IRT-1) was immediately conducted on the football players. Subsequently, participants were asked about the impact of the gum on their performance after each Yo-Yo IRT-1 trial. The morning after each testing day, the Richard-Campbell Sleep Questionnaire (RCSQ) and Karolinska Sleepiness Scale (KSS) were administered to all participants to assess potential changes in their sleep patterns. Ultimately, no significant differences were observed in aerobic capacity and sleep quality data when the placebo was utilized. Consequently, it can be concluded that placebo caffeine did not affect the perceived sleep quality or aerobic capacity among amateur football players.
dc.description.abstractKafeinin fizyolojik ve psikolojik etkileri hususunda tüm sorular henüz yanitlanamamistir. Fakat sporcularin farkli fizyolojik belirteçler ve uyku kalitesine etkileri bilinmektedir. Bu çalismada, futbolcularda aerobik kapasite ve algilanan uyku kalitesinde plasebo sakizinin farkli dozlari kullanildiginda olusan degisikliklerin incelemesi amaçlanmistir. Amatör futbol takimindan 22 erkek oyuncunun (yas:23,36 ± 5,4 yil boy: 180,14 ± 6,9 cm; VA: 76,32 ± 10,2 kg; BKI: 23,51 ± 2,8 kg/m2) gönüllü olarak katildigi arastirma rastgele, çapraz-döngülü, tek kör olarak planlanmistir. 5 dakika çignemeleri istenilen plasebo sakizini çikarttiktan hemen sonra futbolculara Yo-Yo Aralikli Toparlanma Testi Seviye 1 (Yo-Yo IRT-1) uygulanmistir. Katilimcilara her Yo-Yo IRT-1 denemesinden hemen sonra ‘’Sakiz performansinizi nasil etkiledi?’’ sorusu yöneltilmistir. Her test gününden sonraki sabah tüm katilimcilarin uykularinda olusabilecek degisikliklerin gözlenmesi için Richard-Campbell Uyku Ölçegi (RCSQ) ve Karolinska Uykululuk Ölçegi (KSS) uygulanmistir. Aerobik kapasite ve uyku kalitesi verilerinde plasebo kullanildiginda istenilen yönde anlamli bir farklilik görülmemistir. Sonuç olarak, plasebo kafein amatör futbolcularda algilanan uyku kalitesinde ve aerobik kapasitede etkili olmamistir.
dc.identifier.doi10.37989/gumussagbil.1410867
dc.identifier.doihttps://doi.org/10.37989/gumussagbil.1410867
dc.identifier.endpage946
dc.identifier.issn2146-9954
dc.identifier.issue2
dc.identifier.startpage938
dc.identifier.urihttps://hdl.handle.net/11486/2257
dc.identifier.volume13
dc.language.isotr
dc.publisherGumushane University
dc.relation.ispartofGümüshane Üniversitesi Saglik Bilimleri Dergisi
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_DergiPark_20250323
dc.subjectsoccer
dc.subjectcaffeine
dc.subjectplacebo
dc.subjectsleep quality
dc.subjectaerobic performance
dc.titlePlacebo Caffeine in Soccer Players: Effects on Physiological Markers and Perceived Sleep Quality
dc.title.alternativeFutbolcularda Plasebo Kafein: Fizyolojik Belirteçler ve Algilanan Uyku Kalitesi Üzerine Etkileri
dc.typeArticle

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