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Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies

T.D. Love, D.F. Baker, P. Healey, K.E. Black, Tom Love Orcid Logo

European Journal of Sport Science, Pages: 1 - 8

Swansea University Author: Tom Love Orcid Logo

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DOI (Published version): 10.1080/17461391.2017.1418910

Abstract

Background: To determine athletes perceived and measured indices of fluid balance during training and the influence of hydration strategy use on these parameters. Methods: Thirty-three professional rugby union players completed a 120 minute training session in hot conditions (35°C, 40% relative humi...

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Published in: European Journal of Sport Science
ISSN: 1746-1391 1536-7290
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa38408
first_indexed 2018-02-06T20:28:25Z
last_indexed 2018-03-02T20:31:09Z
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spelling 2018-03-02T14:44:34.4353437 v2 38408 2018-02-06 Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies ec50e8c32b3a1274b1022f9d5412478c 0000-0002-9404-5394 Tom Love Tom Love true false 2018-02-06 EAAS Background: To determine athletes perceived and measured indices of fluid balance during training and the influence of hydration strategy use on these parameters. Methods: Thirty-three professional rugby union players completed a 120 minute training session in hot conditions (35°C, 40% relative humidity). Pre-training hydration status, sweat loss, fluid intake and changes in body mass (BM) were obtained. The use of hydration assessment techniques and players perceptions of fluid intake and sweat loss were obtained via a questionnaire. Results: The majority of players (78%) used urine colour to determine pre-training hydration status but the use of hydration assessment techniques did not influence pre-training hydration status (1.025 ± 0.005 vs. 1.023 ± 0.013 g.ml−1, P = .811). Players underestimated sweat loss (73 ± 17%) to a greater extent than fluid intake (37 ± 28%) which resulted in players perceiving they were in positive fluid balance (0.5 ± 0.8% BM) rather than the measured negative fluid balance (−1.0 ± 0.7% BM). Forty-eight percent of players used hydration monitoring strategies during exercise but no player used changes in BM to help guide fluid replacement. Conclusion: Players have difficulty perceiving fluid intake and sweat loss during training. However, the use of hydration monitoring techniques did not affect fluid balance before or during training. Journal Article European Journal of Sport Science 1 8 1746-1391 1536-7290 Rugby, hydration, fluid intake, sweat loss, hydration assessment, hydration beliefs 31 12 2018 2018-12-31 10.1080/17461391.2017.1418910 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2018-03-02T14:44:34.4353437 2018-02-06T16:14:02.7214654 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences T.D. Love 1 D.F. Baker 2 P. Healey 3 K.E. Black 4 Tom Love 0000-0002-9404-5394 5 0038408-02032018144347.pdf love2018.pdf 2018-03-02T14:43:47.6030000 Output 574639 application/pdf Accepted Manuscript true 2019-07-24T00:00:00.0000000 false eng
title Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies
spellingShingle Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies
Tom Love
title_short Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies
title_full Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies
title_fullStr Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies
title_full_unstemmed Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies
title_sort Measured and perceived indices of fluid balance in professional athletes. The use and impact of hydration assessment strategies
author_id_str_mv ec50e8c32b3a1274b1022f9d5412478c
author_id_fullname_str_mv ec50e8c32b3a1274b1022f9d5412478c_***_Tom Love
author Tom Love
author2 T.D. Love
D.F. Baker
P. Healey
K.E. Black
Tom Love
format Journal article
container_title European Journal of Sport Science
container_start_page 1
publishDate 2018
institution Swansea University
issn 1746-1391
1536-7290
doi_str_mv 10.1080/17461391.2017.1418910
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences
document_store_str 1
active_str 0
description Background: To determine athletes perceived and measured indices of fluid balance during training and the influence of hydration strategy use on these parameters. Methods: Thirty-three professional rugby union players completed a 120 minute training session in hot conditions (35°C, 40% relative humidity). Pre-training hydration status, sweat loss, fluid intake and changes in body mass (BM) were obtained. The use of hydration assessment techniques and players perceptions of fluid intake and sweat loss were obtained via a questionnaire. Results: The majority of players (78%) used urine colour to determine pre-training hydration status but the use of hydration assessment techniques did not influence pre-training hydration status (1.025 ± 0.005 vs. 1.023 ± 0.013 g.ml−1, P = .811). Players underestimated sweat loss (73 ± 17%) to a greater extent than fluid intake (37 ± 28%) which resulted in players perceiving they were in positive fluid balance (0.5 ± 0.8% BM) rather than the measured negative fluid balance (−1.0 ± 0.7% BM). Forty-eight percent of players used hydration monitoring strategies during exercise but no player used changes in BM to help guide fluid replacement. Conclusion: Players have difficulty perceiving fluid intake and sweat loss during training. However, the use of hydration monitoring techniques did not affect fluid balance before or during training.
published_date 2018-12-31T10:17:44Z
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score 11.055006

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