Comparative effects of caffeine and paraxanthine on rowing performance and sleep quality: a randomized crossover study
Yazarlar (10)
Dr. Öğr. Üyesi Azize Bingol Diedhiou Şırnak University, Türkiye
Doç. Dr. Ulaş Can YILDIRIM Sinop Üniversitesi, Türkiye
Doç. Dr. Serhat ÖZDENK Sinop Üniversitesi, Türkiye
Dilara Erkan Ankara Üniversitesi, Türkiye
Prof. Dr. Izzet Karakulak Mardin Artuklu University, Türkiye
Doç. Dr. Selin Yildirim Tuncer Lokman Hekim Üniversitesi, Türkiye
Doç. Dr. Murat TURĞUT Sinop Üniversitesi, Türkiye
Arş. Gör. Mehmet Can GÜNDEM Sinop Üniversitesi, Türkiye
Dr. Öğr. Üyesi Mehmet Veysi Bora Mardin Artuklu University, Türkiye
Prof. Dr. Firat Akca Ankara Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Journal of the International Society of Sports Nutrition (Q1) | ||
| Dergi ISSN | 1550-2783 Dergi Bilgileri (2026) | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | Türkçe | Basım Tarihi | 03-2026 |
| Kabul Tarihi | 20-03-2026 | Yayınlanma Tarihi | 31-03-2026 |
| Cilt / Sayı / Sayfa | 23 / 1 / – | DOI | 10.1080/15502783.2026.2650339 |
| Makale Linki | https://doi.org/10.1080/15502783.2026.2650339 | ||
| UAK Araştırma Alanları |
Ergojenik Yardım ve Doping
Antrenman Bilimi
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| Özet |
| BackgroundAlthough caffeine is widely used in athletes due to its ergogenic effects, the effects of its main metabolite, paraxanthine, on performance and sleep have not been adequately investigated.PurposeThis study aimed to comparatively investigate the effects of caffeine and its main metabolite paraxanthine on rowing performance and sleep quality.MethodsThe study was designed as a randomized, double-blind, crossover study and included 14 male university-level rowers (21.6 ± 1.9 age; 2.2 ± 1 years of rowing experience). The participants participated in 2000-m rowing ergometer time trials under four different supplementation conditions (caffeine + paraxanthine, caffeine + placebo, paraxanthine + placebo, and placebo with 200 mg each). Performance data (completion time, mean power, and heart rate), sleep quality, and daytime sleepiness were assessed by subjective scales. The data were … |
| Anahtar Kelimeler |
| Ergogenic aids | physical performance | time-trial performance |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 1 |
| Scopus | 1 |
| Google Scholar | 1 |