CC BY-NC-ND 4.0 · Sports Med Int Open 2022; 6(01): E1-E8
DOI: 10.1055/a-1720-6083
Physiology & Biochemistry

Influence of Wearing Blue Lenses on Melatonin Production and Performance in Volleyball Players

Eduardo Baptista
1   Institute of Biological Sciences, Department of Physiology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
,
Rhai André Arriel
1   Institute of Biological Sciences, Department of Physiology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
,
Ana Luiza de Castro Carvalho
1   Institute of Biological Sciences, Department of Physiology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
,
Matheus M. C. Bispo
1   Institute of Biological Sciences, Department of Physiology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
,
Alex Batista Rodrigues
1   Institute of Biological Sciences, Department of Physiology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
,
Hiago Souza
1   Institute of Biological Sciences, Department of Physiology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
,
2   Department of Sport Sciences/Institute of Health Sciences, Federal University of Triangulo Mineiro, UBERABA, Brazil
,
Moacir Marocolo
1   Institute of Biological Sciences, Department of Physiology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
› Author Affiliations

Abstract

We analyzed the effects of wearing blue lenses on melatonin level, physical and cognitive performance. Fifteen youth volleyball players (15.0±1.5 yrs) attended the laboratory on 3 occasions (48-h interval): on the 1st visit they were familiarized with the procedures of the study, and on 2nd and 3rd visits they were submitted to the testing protocol wearing transparent (control) or blue lens glasses in a counterbalanced crossover design. The protocol consisted of 10 min in “total darkness,” 30 min of light stimulation (wearing blue or transparent lenses), followed by an attentional test, and an agility T-test (without wearing the glasses). Samples of saliva (to determine melatonin concentration) were obtained pre- and post-exposure (30 min) to artificial light, wearing the lenses. Sleepiness, alertness, attention, mood, and perceived recovery status and performance variables (reaction time and T-test) were assessed after lens exposure. Melatonin levels did not differ within and between groups (blue lenses, pre: 0.79±0.73 and post: 1.19±1.374 pg/dl, p=0.252, effect size (ES)=0.38; control, pre: 0.97±1.00 and post: 0.67±0.71 pg/dl, p=0.305, ES=–0.35). Nonetheless, melatonin differences were significantly correlated with physical sedation for glasses with blue lenses (r=−0.526; p=0.04). No other variables differed (p>0.05) between protocols, including T-test performance (p=0.07; ES=0.41). Blue lenses do not influence melatonin levels, cognitive/physical performance, and mood status in amateur youth volleyball players.



Publication History

Received: 16 August 2021
Received: 03 November 2021

Accepted: 05 December 2021

Article published online:
21 February 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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