About this trial
The main objectives are to determine sweat sodium concentration \[Na+\], whole body sweat rate (WBSR) and rate of sweat sodium loss (RSSL) in female athletes aged 13 and above during their normal planned training session across various sports (basketball, soccer, volleyball, cheer, flag football and softball).
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Subject is 13yrs+
Subject has been cleared for sport participation by their personal or team physician and/or coach-led practice/training.
Subject is participating in sport on the youth/ amateur/ collegiate/professional/elite level
If under 18, a parental/guardian consent form will be completed.
Disqualifiers
As this study is undertaken at the athletes training facility, the medical staff at the team/club will advise on who should/ should not take part.
Subject has an allergy to adhesives (e.g., experiences rash reactions to typical adhesive bandages
Trial population
Healthy female athletes in coach-led team sports
Trial design
Other
Prospective
Treatments tested in this trial
Sweat patch
Other interventionWear sweat patch during regular team sports practice session
Treatment groups
Trial outcomes
Primary outcomes
Regional sweat [Na+]
Absorbent patch technique (3M TegadermTM + Pad; 3M, St. Paul, MN; pad size 10 cm2 with an absorbent capacity of \~1.3 g) to left and right dorsal arm. An additional patch on the right scapula may be added depending on the accessibility to the sites on the body and the nature of the sport. Analyzed using a HORIBA (LAQUAtwin Na-11)
Whole body sweat rate (WBSR) WBSR
Pre- versus post body mass on scale, taking into account food and fluid intake, urine and stool output
Rate of sweat sodium loss (RSSL)
The rate of sodium sweat loss (RSSL) will be determined as the product of sweat \[Na+\] and whole-body sweat rate (WBSR)
Secondary outcomes
Urine specific gravity (USG)
Unit not applicable
Fluid intake
Weighing pre-filled bottles before and after exercise, beverage choice of water, and Gatorade, or G2
Carbohydrate intake
Grams of carbohydrate consumed through food and beverages
Sponsors and contacts
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