Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Caffeine Supplementation in Women Volleyball Players on Performance and Wellness during a Regular Training Week

Jesús Siquier-Coll
* ORCID logo ,
Gabriel Delgado-García
,
Fulgencio Soto-Méndez
,
Antonio Liñán-González
* ORCID logo ,
Raquel García
,
Francisco Tomás González-Fernández
ORCID logo
Version 1 : Received: 3 December 2023 / Approved: 5 December 2023 / Online: 5 December 2023 (11:01:51 CET)

A peer-reviewed article of this Preprint also exists.

Siquier-Coll, J.; García-Delgado, G.; Soto-Méndez, F.; Liñán-González, A.; García, R.; González-Fernández, F.T. The Effect of Caffeine Supplementation on Female Volleyball Players’ Performance and Wellness during a Regular Training Week. Nutrients 2024, 16, 29. Siquier-Coll, J.; García-Delgado, G.; Soto-Méndez, F.; Liñán-González, A.; García, R.; González-Fernández, F.T. The Effect of Caffeine Supplementation on Female Volleyball Players’ Performance and Wellness during a Regular Training Week. Nutrients 2024, 16, 29.

Abstract

Background: Caffeine is an ergogenic aid that still needs to be investigated in female sports per-formance. Methods: Eight semi-professional female volleyball (Heigth=1.63±0.08 m; Weigth= 66.67 ± 4,.74 kg) players voluntarily participated in this study. A randomised crossover design was carried out. Players went through the caffeine and placebo condition. In the caffeine condi-tion, participants consumed 5 mg/kg of caffeine. The evaluations were performed over two weeks of training. In both conditions, the countermovement jump test, repeated jumps for 15s and hand-grip were performed. Change of direction was assessed using the 505 test. Well-being was also assessed by a wellness questionnaire. A repeated measures Anova and correlation analysis were performed. Results: The repeated-measures ANOVA revealed a main effect of supplementation (F (1.7) = 8.41, p = 0.02, η2 = 0.54) across the training week on physical performance. Besides, there was a positive effect on perceived fatigue (F (1.7) = 7.29, p = 0.03, η2 = 0.51). Conclusions: Caf-feine improved performance and fatigue parameters over one week of training.

Keywords

supplementation; caffeine; sport perfomance; volleyball; ergogenic aids.

Subject

Public Health and Healthcare, Nursing

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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