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Pre-game hydration status, sweat loss, and fluid intake in elite Brazilian young male soccer players during competition.
J Sports Sci 2012; 30(1):37-42JS

Abstract

In this study, we assessed the pre-game hydration status and fluid balance of elite young soccer players competing in a match played in the heat (temperature 31.0 ± 2.0 ° C, relative humidity 48.0 ± 5.0%) for an official Brazilian soccer competition. Fluid intake was measured during the match, as were urine specific gravity and body mass before and after the game to estimate hydration status. Data were obtained from 15 male players (age 17.0 ± 0.6 years, height 1.78 ± 0.06 m, mass 65.3 ± 3.8 kg); however, data are only analysed for 10 players who completed the full game. The mean (± s) sweat loss of players amounted to 2.24 ± 0.63 L, and mean fluid intake was 1.12 ± 0.39 L. Pre-game urine specific gravity was 1.021 ± 0.004, ranging from 1.010 to 1.025. There was no significant correlation between sweat loss and fluid intake (r = 0.504, P = 0.137) or between urine specific gravity and fluid intake (r = -0.276, P = 0.440). We conclude that young, native tropical soccer players started the match hypohydrated and replaced about 50% of the sweat lost. Thus, effective strategies to improve fluid replacement are needed for players competing in the heat.

Authors+Show Affiliations

Department of Physical Education, Federal University of Viçosa, Viçosa, Brazil. rafael.pires@ufv.brNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22111913

Citation

Da Silva, Rafael P., et al. "Pre-game Hydration Status, Sweat Loss, and Fluid Intake in Elite Brazilian Young Male Soccer Players During Competition." Journal of Sports Sciences, vol. 30, no. 1, 2012, pp. 37-42.
Da Silva RP, Mündel T, Natali AJ, et al. Pre-game hydration status, sweat loss, and fluid intake in elite Brazilian young male soccer players during competition. J Sports Sci. 2012;30(1):37-42.
Da Silva, R. P., Mündel, T., Natali, A. J., Bara Filho, M. G., Alfenas, R. C., Lima, J. R., ... Marins, J. C. (2012). Pre-game hydration status, sweat loss, and fluid intake in elite Brazilian young male soccer players during competition. Journal of Sports Sciences, 30(1), pp. 37-42. doi:10.1080/02640414.2011.623711.
Da Silva RP, et al. Pre-game Hydration Status, Sweat Loss, and Fluid Intake in Elite Brazilian Young Male Soccer Players During Competition. J Sports Sci. 2012;30(1):37-42. PubMed PMID: 22111913.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Pre-game hydration status, sweat loss, and fluid intake in elite Brazilian young male soccer players during competition. AU - Da Silva,Rafael P, AU - Mündel,Toby, AU - Natali,Antonio J, AU - Bara Filho,Mauricio G, AU - Alfenas,Rita C G, AU - Lima,Jorge R P, AU - Belfort,Felipe G, AU - Lopes,Priscila R N R, AU - Marins,João C B, Y1 - 2011/11/23/ PY - 2011/11/25/entrez PY - 2011/11/25/pubmed PY - 2012/4/20/medline SP - 37 EP - 42 JF - Journal of sports sciences JO - J Sports Sci VL - 30 IS - 1 N2 - In this study, we assessed the pre-game hydration status and fluid balance of elite young soccer players competing in a match played in the heat (temperature 31.0 ± 2.0 ° C, relative humidity 48.0 ± 5.0%) for an official Brazilian soccer competition. Fluid intake was measured during the match, as were urine specific gravity and body mass before and after the game to estimate hydration status. Data were obtained from 15 male players (age 17.0 ± 0.6 years, height 1.78 ± 0.06 m, mass 65.3 ± 3.8 kg); however, data are only analysed for 10 players who completed the full game. The mean (± s) sweat loss of players amounted to 2.24 ± 0.63 L, and mean fluid intake was 1.12 ± 0.39 L. Pre-game urine specific gravity was 1.021 ± 0.004, ranging from 1.010 to 1.025. There was no significant correlation between sweat loss and fluid intake (r = 0.504, P = 0.137) or between urine specific gravity and fluid intake (r = -0.276, P = 0.440). We conclude that young, native tropical soccer players started the match hypohydrated and replaced about 50% of the sweat lost. Thus, effective strategies to improve fluid replacement are needed for players competing in the heat. SN - 1466-447X UR - https://www.unboundmedicine.com/medline/citation/22111913/Pre_game_hydration_status_sweat_loss_and_fluid_intake_in_elite_Brazilian_young_male_soccer_players_during_competition_ L2 - http://www.tandfonline.com/doi/full/10.1080/02640414.2011.623711 DB - PRIME DP - Unbound Medicine ER -