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Ad libitum fluid intake does not prevent dehydration in suboptimally hydrated young soccer players during a training session of a summer camp.
Int J Sport Nutr Exerc Metab 2013; 23(3):245-51IJ

Abstract

There is a lack of studies concerning hydration status of young athletes exercising in the heat.

PURPOSE

To assess preexercise hydration status in young soccer players during a summer sports camp and to evaluate body- water balance after soccer training sessions.

METHODS

Initial hydration status was assessed in 107 young male soccer players (age 11-16 yr) during the 2nd day of the camp. Seventy-two athletes agreed to be monitored during 2 more training sessions (3rd and 5th days of the camp) to calculate dehydration via changes in body weight, while water drinking was allowed ad libitum. Hydration status was assessed via urine specific gravity (USG), urine color, and changes in total body weight. Mean environmental temperature and humidity were 27.2 ± 2 °C and 57% ± 9%, respectively.

RESULTS

According to USG values, 95 of 107 of the players were hypohydrated (USG ≥ 1.020) before practice. The prevalence of dehydration observed was maintained on both days, with 95.8% and 97.2% of the players being dehydrated after the training sessions on the 3rd and 5th days, respectively. Despite fluid availability, 54 of the 66 (81.8%) dehydrated players reduced their body weight (-0.35 ± 0.04 kg) as a response to training, while 74.6% (47 out of the 63) further reduced their body weight (-0.22 ± 0.03 kg) after training on the 5th day.

CONCLUSION

Approximately 90% of the young soccer players who began exercising under warm weather conditions were hypohydrated, while drinking ad libitum during practice did not prevent further dehydration in already dehydrated players.

Authors+Show Affiliations

Dept. of Nutrition and Dietetics, Harokopio University, Athens, Greece.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

23166200

Citation

Arnaoutis, Giannis, et al. "Ad Libitum Fluid Intake Does Not Prevent Dehydration in Suboptimally Hydrated Young Soccer Players During a Training Session of a Summer Camp." International Journal of Sport Nutrition and Exercise Metabolism, vol. 23, no. 3, 2013, pp. 245-51.
Arnaoutis G, Kavouras SA, Kotsis YP, et al. Ad libitum fluid intake does not prevent dehydration in suboptimally hydrated young soccer players during a training session of a summer camp. Int J Sport Nutr Exerc Metab. 2013;23(3):245-51.
Arnaoutis, G., Kavouras, S. A., Kotsis, Y. P., Tsekouras, Y. E., Makrillos, M., & Bardis, C. N. (2013). Ad libitum fluid intake does not prevent dehydration in suboptimally hydrated young soccer players during a training session of a summer camp. International Journal of Sport Nutrition and Exercise Metabolism, 23(3), pp. 245-51.
Arnaoutis G, et al. Ad Libitum Fluid Intake Does Not Prevent Dehydration in Suboptimally Hydrated Young Soccer Players During a Training Session of a Summer Camp. Int J Sport Nutr Exerc Metab. 2013;23(3):245-51. PubMed PMID: 23166200.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ad libitum fluid intake does not prevent dehydration in suboptimally hydrated young soccer players during a training session of a summer camp. AU - Arnaoutis,Giannis, AU - Kavouras,Stavros A, AU - Kotsis,Yiannis P, AU - Tsekouras,Yiannis E, AU - Makrillos,Michalis, AU - Bardis,Costas N, Y1 - 2012/11/19/ PY - 2012/11/21/entrez PY - 2012/11/21/pubmed PY - 2014/1/15/medline SP - 245 EP - 51 JF - International journal of sport nutrition and exercise metabolism JO - Int J Sport Nutr Exerc Metab VL - 23 IS - 3 N2 - UNLABELLED: There is a lack of studies concerning hydration status of young athletes exercising in the heat. PURPOSE: To assess preexercise hydration status in young soccer players during a summer sports camp and to evaluate body- water balance after soccer training sessions. METHODS: Initial hydration status was assessed in 107 young male soccer players (age 11-16 yr) during the 2nd day of the camp. Seventy-two athletes agreed to be monitored during 2 more training sessions (3rd and 5th days of the camp) to calculate dehydration via changes in body weight, while water drinking was allowed ad libitum. Hydration status was assessed via urine specific gravity (USG), urine color, and changes in total body weight. Mean environmental temperature and humidity were 27.2 ± 2 °C and 57% ± 9%, respectively. RESULTS: According to USG values, 95 of 107 of the players were hypohydrated (USG ≥ 1.020) before practice. The prevalence of dehydration observed was maintained on both days, with 95.8% and 97.2% of the players being dehydrated after the training sessions on the 3rd and 5th days, respectively. Despite fluid availability, 54 of the 66 (81.8%) dehydrated players reduced their body weight (-0.35 ± 0.04 kg) as a response to training, while 74.6% (47 out of the 63) further reduced their body weight (-0.22 ± 0.03 kg) after training on the 5th day. CONCLUSION: Approximately 90% of the young soccer players who began exercising under warm weather conditions were hypohydrated, while drinking ad libitum during practice did not prevent further dehydration in already dehydrated players. SN - 1543-2742 UR - https://www.unboundmedicine.com/medline/citation/23166200/Ad_libitum_fluid_intake_does_not_prevent_dehydration_in_suboptimally_hydrated_young_soccer_players_during_a_training_session_of_a_summer_camp_ L2 - https://medlineplus.gov/dehydration.html DB - PRIME DP - Unbound Medicine ER -