Final answer:
Athletes should drink 3-8 ounces of water every 15 minutes during competitions lasting less than an hour to maintain hydration. Urine production typically increases about 30 minutes after drinking a large glass of water. Proper hydration supports kidney function and overall fluid balance in the body.
Step-by-step explanation:
To maintain hydration during competition lasting less than 1 hour, it is recommended by experts such as those affiliated with the American College of Sports Medicine that athletes consume 3-8 ounces of water about every 15 minutes. This guideline aids in replacing fluids lost through sweating and helps athletes to maintain optimum performance. The primary function of this hydration strategy is to prevent both dehydration and overhydration, which can be balanced by the body's ability to regulate water intake through mechanisms such as urination and osmotic homeostasis.
Moreover, concerning the question about urine output after drinking a large glass of water, diuresis, or increased urine production, generally starts about 30 minutes after fluid intake and can peak after about 1 hour. Adequate hydration is also important for kidney function, which regulates water balance in the body by conserving water when dehydrated and expelling excess water when necessary.