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Cited by 27Thermoregulation and physiological responsesSports Performance and TrainingExercise and Physiological Responses

Fluid Balance and Sodium Losses During Indoor Tennis Match Play

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Lott, Matthew J.E., Galloway, Stuart D.R.·2011·International Journal of Sport Nutrition and Exercise Metabolism
DOI 10.1123/ijsnem.21.6.492
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Abstract

This study assessed fluid balance, sodium losses, and effort intensity during indoor tennis match play (17 ± 2 °C, 42% ± 9% relative humidity) over a mean match duration of 68.1 ± 12.8 min in 16 male tennis players. Ad libitum fluid intake was recorded throughout the match. Sweat loss from change in nude body mass; sweat electrolyte content from patches applied to the forearm, calf, and thigh, and back of each player; and electrolyte balance derived from sweat, urine, and daily food-intake analysis were measured. Effort intensity was assessed from on-court heart rate compared with data obtained during a maximal treadmill test. Sweat rate ( M ± SD ) was 1.1 ± 0.4 L/hr, and fluid-ingestion rate was 1.0 ± 0.6 L/hr (replacing 93% ± 47% of fluid lost), resulting in only a small mean loss in body mass of 0.15% ± 0.74%. Large interindividual variabilities in sweat rate (range 0.3–2.0 L/hr) and fluid intake (range 0.31–2.52 L/hr) were noted. Whole-body sweat sodium concentration was 38 ± 12 mmol/L, and total sodium losses during match play were 1.1 ± 0.4 g (range 0.5–1.8 g). Daily sodium intake was 2.8 ± 1.1 g. Indoor match play largely consisted of low-intensity exercise below ventilatory threshold (mean match heart rate was 138 ± 24 beats/min). This study shows that in moderate indoor temperature conditions players ingest sufficient fluid to replace sweat losses. However, the wide range in data obtained highlights the need for individualized fluid-replacement guidance.

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  • Replacing Na+ and Cl− levels after high-intensity situations is instrumental in maintaining electrolyte balance due to their role in stimulating hydration.

    “Replacing Na+ and Cl− levels after high-intensity situations is instrumental in maintaining electrolyte balance due to their role in stimulating hydration.29–31”

    From Wearable sensors for monitoring the physiological and biochemical profile of the athlete (2019) · cites this paper as [31]

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Research works printed but not linked: 2

  1. Elliot, B., Dawson, B., & Pyke, F. (1985). The energetics of singles tennis. Journal of Human Movement Studies, 11, 11-20.
  2. Osterberg, K.L., Sperber, T.E., Lacambra, M., Baker, L.B., & Murray, R. (2005). Fluid balance, hydration status, and sweat electrolyte concentrations in NBA basketball players during summer league games. Journal of Sports Sciences, 40, S39.

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Authors
Lott, M. J. E., & Galloway, S. D. R.
Affiliations
University of Stirling (GB)
ORCID
Galloway, Stuart D.R.
Venue
International Journal of Sport Nutrition and Exercise Metabolism
Publisher
Human Kinetics
Published
2011-12
Volume
21
Issue
6
Pages
492-500
ISSN
  • 1526-484X (ISSN-L)
  • 1543-2742
DOI
10.1123/ijsnem.21.6.492
OpenAlex
W2113336938
Cited by
27
References
26
Citations by year
2026: 3 · 2024: 2 · 2023: 1 · 2022: 1 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 4 · 2014: 4 · 2013: 3 · 2012: 1
FWCI
1.75
Type
journal article
Language
en
Open access
Locations
  • International Journal of Sport Nutrition and Exercise Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Stirling Online Research Repository (University of Stirling) (submittedVersion, public-domain)
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
fluid balance, sodium loss, sweat electrolytes, match play, fluid intake, sweat rate, weight change, electrolyte balance, heart rate, exercise intensity, interindividual variability, fluid replacement
MeSH terms
Adolescent, Adult, Body Weight, Dehydration, Drinking, Electrolytes, Physical Exertion, Heart Rate, Humans, Humidity, Male, Sodium, Sweat, Sweating, Temperature, Tennis, Water-Electrolyte Balance, Exercise, Young Adult

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