The Effect of Water Loading for Acute Weight Loss Following Fluid Restriction on Sleep Quality and Quantity in Combat Sports Athletes

Ian C Dunican; Peter R Eastwood; Kevin Murray; John A Caldwell; Reid James Reale

Back

The Effect of Water Loading for Acute Weight Loss Following Fluid Restriction on Sleep Quality and Quantity in Combat Sports Athletes

Journal article

Open access

Peer reviewed

The Effect of Water Loading for Acute Weight Loss Following Fluid Restriction on Sleep Quality and Quantity in Combat Sports Athletes

Ian C Dunican, Peter R Eastwood, Kevin Murray, John A Caldwell and Reid James Reale

Journal of Exercise and Nutrition, Vol.2(5), pp.1-9

2019

Files and links (2)

pdf

PDF - Published Version (Open Access)727.75 kBDownload View

Published VersionPDF - Published Version (Open Access) Open Access

url

https://www.journalofexerciseandnutrition.com/ManuscriptUploadsPDF/95.pdfView

Webpage

Abstract

Human Movement and Sports Science

weight-cutting

body composition

athlete monitoring

Introduction: Combat sport athletes commonly engage in established and novel acute weight-loss strategies to achieve weight division targets. The effect of such practices on sleep is unknown. Methods: Twenty-two combat sports athletes wore wrist actigraphy devices for nine nights during a training camp and completed questionnaires assessing daytime sleepiness, insomnia, sleep apnoea and chronotype. Athletes were assigned to a control (CG) or water loading group (WLG). Both followed a low residue diet for 96h, and restricted fluid for 24h before weigh-in. Prior to restriction, the CG consumed 40ml/kg and WLG consumed 100ml/kg fluid daily. Results: Four athletes responded positively for the potential prevalence of sleep apnoea (2 CG/WLG), reporting subthreshold insomnia 8±4, athletes were assessed as having an "intermediate chronotype". Sleep latency estimates in CG were longer on days 4/6 relative to 3 (p<0.05). There was a between-group difference for sleep latency on day 6, with CG taking 35 mins longer (95% CI 5-64mins, p=0.022) to fall asleep. Conclusion: Acute weight loss by means of a low residue diet, both with and without water loading before the fluid restriction is a safe and effective means of manipulating body mass to in the context of sleep.

Details

Title: The Effect of Water Loading for Acute Weight Loss Following Fluid Restriction on Sleep Quality and Quantity in Combat Sports Athletes
Authors: Ian C Dunican (Author) - University of Western Australia
Peter R Eastwood (Author) - University of Western Australia
Kevin Murray (Author) - University of Western Australia
John A Caldwell (Author) - Coastal Performance Consulting, United States
Reid James Reale (Author) - University of the Sunshine Coast - School of Health & Sport Sciences
Publication details: Journal of Exercise and Nutrition, Vol.2(5), pp.1-9
Publisher: Capstone Science Inc.
Date published: 2019
ISSN: 2640-2572
Copyright note: Copyright, 2019. Published by Capstone Science Inc. under open access distribution rights. Articles are available for download and proper distribution.
Organisation Unit: University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy
Language: English
Record Identifier: 99450979902621
Output Type: Journal article

Metrics

344 File views/ downloads

547 Record Views