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AuthorRomdhani, Mohamed
AuthorSouissi, Nizar
AuthorMoussa-Chamari, Imen
AuthorChaabouni, Yassine
AuthorMahdouani, Kacem
AuthorSahnoun, Zouheir
AuthorDriss, Tarak
AuthorChamari, Karim
AuthorHammouda, Omar
Available date2023-12-14T09:24:41Z
Publication Date2021-02-11
Publication NameInternational Journal of Sports Physiology and Performance
Identifierhttp://dx.doi.org/10.1123/ijspp.2019-0792
CitationRomdhani, M., Souissi, N., Moussa-Chamari, I., Chaabouni, Y., Mahdouani, K., Sahnoun, Z., ... & Hammouda, O. (2021). Caffeine use or napping to enhance repeated sprint performance after partial sleep deprivation: why not both?. International Journal of Sports Physiology and Performance, 16(5), 711-718.
ISSN1555-0265
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85104496362&origin=inward
URIhttp://hdl.handle.net/10576/50443
AbstractPurpose: To compare the effect of a 20-minute nap opportunity (N20), a moderate dose of caffeine (CAF; 5 mg·kg-1), or a moderate dose of caffeine before N20 (CAF+N) as possible countermeasures to the decreased performance and the partial sleep deprivation-induced muscle damage. Methods: Nine male, highly trained judokas were randomly assigned to either baseline normal sleep night, placebo, N20, CAF, or CAF+N. Test sessions included the running-based anaerobic sprint test, from which the maximum (Pmax), mean (Pmean), and minimum (Pmin) powers were calculated. Biomarkers of muscle, hepatic, and cardiac damage and of enzymatic and nonenzymatic antioxidants were measured at rest and after the exercise. Results: N20 increased Pmax compared with placebo (P < .01, d = 0.75). CAF+N increased Pmax (P < .001, d = 1.5; d = 0.94), Pmin (P < .001, d = 2.79; d = 2.6), and Pmean (P < .001, d = 1.93; d = 1.79) compared with placebo and CAF, respectively. Postexercise creatine kinase increased whenever caffeine was added, that is, after CAF (P < .001, d = 1.19) and CAF+N (P < .001, d = 1.36). Postexercise uric acid increased whenever participants napped, that is, after N20 (P < .001, d = 2.19) and CAF+N (P < .001, d = 2.50) and decreased after CAF (P < .001, d = 2.96). Conclusion: Napping improved repeated-sprint performance and antioxidant defense after partial sleep deprivation. Contrarily, caffeine increased muscle damage without improving performance. For sleep-deprived athletes, caffeine before a short nap opportunity would be more beneficial for repeated sprint performance than each treatment alone.
Languageen
PublisherHuman Kinetics Publishers Inc.
SubjectAntioxidant status
Daytime sleep
Inflammation
Psychostimulant
RSA
Sleep restriction
TitleCaffeine use or napping to enhance repeated sprint performance after partial sleep deprivation: Why not both?
TypeArticle
Pagination711-718
Issue Number5
Volume Number16
ESSN1555-0273
dc.accessType Abstract Only


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