Sweat rates during international open water competitions and the importance of feedings in elite swimmers
DOI:
https://doi.org/10.17398/1885-7019.21.291Keywords:
elite, hydration, open water, swimming, sweat rateAbstract
Open water swimming is an outdoor discipline with different environmental characteristics that affects athletes’ performance. The aim of this work was to understand how hydration affects the sweat rate during a 5 and 10 km event in elite swimmers. A total of 45 elite swimmers (22 females and 23 males) were analysed during an international event over 5 km or 10 km in different water temperature conditions. Sweat rate (L·h−1), percentage of weight loss and drink ingestion (L) were measured. An ANOVA test was used to indicate the significance of the difference. The results showed that warm water on 10 k sweat rate is statistically significant (p < 0.001) (-1.99 ± 0.34 vs -1.14 ± 0.36 vs -1.48 ± 0.49 L·h−1), and in cold water with wetsuit, weight loss (p < 0.05) and drink ingestion (p < 0.001) are significant too (-2.27 ± 0.75 %; 1.31 ± 0.63 L). The results show a higher sweat rate in warm water and weight loss with wetsuit, drink ingestion is lower in cold water. This study confirms that it is important to analyse the environmental characteristics of an open water swimming competition to plan a specific hydration protocol to get the best performance.
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References
Armstrong, L. E. (2005). Hydration Assessment Techniques. Nutrition Reviews, 63, S40-S54. https://doi.org/10.1111/j.1753-4887.2005.tb00153.x
Armstrong, L. E. (2007). Assessing Hydration Status: The Elusive Gold Standard. Journal of the American College of Nutrition, 26(sup5), 575S-584S. https://doi.org/10.1080/07315724.2007.10719661
Armstrong, L. E. (2021). Rehydration during Endurance Exercise: Challenges, Research, Options, Methods. Nutrients, 13(3), 887. https://doi.org/10.3390/nu13030887
Baldassarre, R., Bonifazi, M., Zamparo, P., & Piacentini, M. F. (2017). Characteristics and Challenges of Open-Water Swimming Performance: A Review. International Journal of Sports Physiology and Performance, 12(10), 1275-1284. https://doi.org/10.1123/ijspp.2017-0230
Baldassarre, R., Ieno, C., Bonifazi, M., Di Castro, A., Gianfelici, A., & Piacentini, M. F. (2022). Carbohydrate supplementation during a simulated 10‐km open water swimming race: Effects on physiological, perceptual parameters and performance. European Journal of Sport Science, 22(3), 390-398. https://doi.org/10.1080/17461391.2021.1880644
Baldassarre, R., Pennacchi, M., La Torre, A., Bonifazi, M., & Piacentini, M. F. (2019). Do the Fastest Open-Water Swimmers have A Higher Speed in Middle- and Long-Distance Pool Swimming Events? Journal of Functional Morphology and Kinesiology, 4(1). https://doi.org/10.3390/jfmk4010015
Belval, L. N., Hosokawa, Y., Casa, D. J., Adams, W. M., Armstrong, L. E., Baker, L. B., Burke, L., Cheuvront, S., Chiampas, G., González-Alonso, J., Huggins, R. A., Kavouras, S. A., Lee, E. C., McDermott, B. P., Miller, K., Schlader, Z., Sims, S., Stearns, R. L., Troyanos, C., & Wingo, J. (2019). Practical Hydration Solutions for Sports. Nutrients, 11(7), 1550. https://doi.org/10.3390/nu11071550
Buono, M. J., Lee, N. V. L., & Miller, P. W. (2010). The relationship between exercise intensity and the sweat lactate excretion rate. The Journal of Physiological Sciences, 60(2), 103-107. https://doi.org/10.1007/s12576-009-0073-3
Casa, D. J., Clarkson, P. M., & Roberts, W. O. (2005). American College of Sports Medicine Roundtable on Hydration and Physical Activity: Consensus Statements. Current Sports Medicine Reports, 4(3). https://journals.lww.com/acsm-csmr/fulltext/2005/06000/american_college_of_sports_medicine_roundtable_on.3.aspx
Cox, G. R., Broad, E. M., Riley, M. D., & Burke, L. M. (2002). Body mass changes and voluntary fluid intakes of elite level water polo players and swimmers. Journal of Science and Medicine in Sport, 5(3), 183-193. https://doi.org/10.1016/s1440-2440(02)80003-2
Galloway, S., & Maughan, R. (1998). The effects of substrate and fluid provision on thermoregulatory, cardiorespiratory and metabolic responses to prolonged exercise in a cold environment in man. Experimental Physiology, 83(3), 419-430. https://doi.org/10.1113/expphysiol.1998.sp004125
Manson, J. (2017). Swimwear for open water swimming events. FINA Rules Memorandum 2017-2018. World Aquatics. https://www.worldaquatics.com/swimming/www.worldaquatics.com/swimming/approved-swimwear
Maughan, R. J., Dargavel, L. A., Hares, R., & Shirreffs, S. M. (2009). Water and salt balance of well-trained swimmers in training. International Journal of Sport Nutrition and Exercise Metabolism, 19(6), 598-606. https://doi.org/10.1123/ijsnem.19.6.598
Maughan, R. J., & Shirreffs, S. M. (2010). Dehydration and rehydration in competative sport. Scandinavian Journal of Medicine & Science in Sports, 20(s3), 40-47. https://doi.org/10.1111/j.1600-0838.2010.01207.x
McKay, A. K. A., Stellingwerff, T., Smith, E. S., Martin, D. T., Mujika, I., Goosey-Tolfrey, V. L., Sheppard, J., & Burke, L. M. (2022). Defining Training and Performance Caliber: A Participant Classification Framework. International Journal of Sports Physiology and Performance, 17(2), 317-331. https://doi.org/10.1123/ijspp.2021-0451
Murphy, M., Polston, K., Carroll, M., & Alm, J. (2021). Heat Injury in Open-Water Swimming: A Narrative Review. Current Sports Medicine Reports, 20(4), 193-198. https://doi.org/10.1249/JSR.0000000000000829
Murray, B. (2007). Hydration and physical performance. Journal of the American College of Nutrition, 26(5 Suppl), 542S-548S. https://doi.org/10.1080/07315724.2007.10719656
Robinson, S., & Somers, A. (1971). Temperature regulation in swimming. Journal de physiologie, 63 3, 406-409.
Sawka, M. N., Burke, L. M., Eichner, E. R., Maughan, R. J., Montain, S. J., & Stachenfeld, N. S. (2007). Exercise and fluid replacement. American College of Sports Medicine position stand. Medicine and Science in Sports and Exercise, 39(2), 377-390. https://doi.org/10.1249/mss.0b013e31802ca597
Shaw, G., Koivisto, A., Gerrard, D., & Burke, L. M. (2014). Nutrition considerations for open-water swimming. International Journal of Sport Nutrition and Exercise Metabolism, 24(4), 373-381. https://doi.org/10.1123/ijsnem.2014-0018
Shirreffs, S. M., & Sawka, M. N. (2011). Fluid and electrolyte needs for training, competition, and recovery. Journal of Sports Sciences, 29 Suppl 1, S39-46. https://doi.org/10.1080/02640414.2011.614269
Sommerfield, L. M., McAnulty, S. R., McBride, J. M., Zwetsloot, J. J., Austin, M. D., Mehlhorn, J. D., Calhoun, M. C., Young, J. O., Haines, T. L., & Utter, A. C. (2016). Validity of Urine Specific Gravity When Compared With Plasma Osmolality as a Measure of Hydration Status in Male and Female NCAA Collegiate Athletes. Journal of Strength and Conditioning Research, 30(8), 2219-2225. https://doi.org/10.1519/JSC.0000000000001313
Stewart, A., Marfell-Jones, M., Olds, T., & De Ridder, H. (2011). International standards for anthropometric assessment: (2011) (Third edition). International Society for the Advancement of Kinanthropometry; WorldCat.
Tipton, M., & Bradford, C. (2014). Moving in extreme environments: Open water swimming in cold and warm water. Extreme Physiology & Medicine, 3(1), 12. https://doi.org/10.1186/2046-7648-3-12
Tipton, M. J., Collier, N., Massey, H., Corbett, J., & Harper, M. (2017). Cold water immersion: Kill or cure? Experimental Physiology, 102(11), 1335-1355. https://doi.org/10.1113/EP086283
Weitkunat, T., Knechtle, B., Knechtle, P., Rüst, C. A., & Rosemann, T. (2012). Body composition and hydration status changes in male and female open-water swimmers during an ultra-endurance event. Journal of Sports Sciences, 30(10), 1003-1013. https://doi.org/10.1080/02640414.2012.682083
Yuhasz, M. S. (1977). Physical Fitness Manual. University of Western Ontario. https://books.google.es/books?id=oPgMtwAACAAJ
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