title: Hydration status, sweat rates, and rehydration education of youth football campers.
abstract: BACKGROUND
  Previous field research has not identified sweat rates (SR), fluid consumption (FC), or the efficacy of an educational intervention (EI) for youth during football camp.
  
  
  OBJECTIVE
  To measure hydration status and rehydration performance and examine EL using these data.
  
  
  METHODS
  Observational with EI randomized comparison.
  
  
  METHODS
  Thirty-three boys (mean +/- SD: 12 +/- 2 y, 52.9 +/- 13.6 kg, 156 +/- 12 cm) volunteered during a 5-d camp with 3 (-2-h) sessions per day (WBGT: 25.6 +/- 0.5 degrees C).
  
  
  METHODS
  Hydration status, SR, and FC.
  
  
  RESULTS
  Urine osmolality averaged 796 +/- 293 mOsm/L for days 2-5. Game SR (1.30 +/- 0.57 L/h) was significantly greater than practice SR (0.65 +/- 0.35 L/h; P = .002). Subjects dehydrated during free time but matched fluid losses with FC (0.76 +/- 0.29 L/h) during football activities.
  
  
  CONCLUSIONS
  Subjects arrived at camp hypohydrated and maintained this condition. They matched FC and SR during, but dehydrated when not playing, football. This may impair recovery and subsequent performance. Hydration EI seemed to have a positive influence on hydration practices.
authors.affiliation: Dept of Health and Human Performance, University of Tennessee at Chattanooga, USA.
authors.forename: Brendon P
authors.initials: BP
authors.lastname: McDermott
authors.forename: Douglas J
authors.initials: DJ
authors.lastname: Casa
authors.forename: Susan W
authors.initials: SW
authors.lastname: Yeargin
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Ganio
authors.forename: Rebecca M
authors.initials: RM
authors.lastname: Lopez
authors.forename: Elizabeth A
authors.initials: EA
authors.lastname: Mooradian
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D015992:Body Mass Index; D002165:Camping; D002648:Child; D003681:Dehydration / Q000209:etiology*; D005538:Football; D006266:Health Education; D006801:Humans; D008297:Male; D011446:Prospective Studies; D012307:Risk Factors; D011795:Surveys and Questionnaires; D013546:Sweating; D013997:Time Factors; D014882:Water-Electrolyte Balance