Document Detail


Ad Libitum Fluid Intake does not Prevent Dehydration in Sub-optimally Hydrated Young Soccer Players during a Training Session of a Summer Camp.
MedLine Citation:
PMID:  23166200     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
There is a lack of studies concerning hydration status of young athletes exercising in the heat. PURPOSE: To assess pre-exercise 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 years) during the 2nd day of the camp. Seventy two athletes agreed to be monitored during two more training sessions (3rd and 5th day of the camp) in order 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 out of 107 of the players were hypohydrated (USG≥1.020), prior to practice. The prevalence of dehydration observed was maintained in both days, with 95.8% and 97.2% of the players being dehydrated, after the training sessions in the 3rd and 5th day, respectively. Despite fluid availability, 54 out 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) reduced further their body weight (-0.22±0.03 kg) after training in 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:
Giannis Arnaoutis; Stavros A Kavouras; Yiannis P Kotsis; Yiannis E Tsekouras; Michalis Makrillos; Costas N Bardis
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-19
Journal Detail:
Title:  International journal of sport nutrition and exercise metabolism     Volume:  -     ISSN:  1543-2742     ISO Abbreviation:  Int J Sport Nutr Exerc Metab     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100939812     Medline TA:  Int J Sport Nutr Exerc Metab     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Laboratory of Nutrition & Clinical Dietetics, Department of Nutrition and Dietetics, Harokopio University, Athens, Greece.
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