Lecture 23 - Kin 110Lecture 23 Monday April 5th, 2010...

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Kin 110—Lecture 23 Monday April 5 th , 2010 Sedentary person loses about 2.7 liters water per day (1.5 urine, 1.0 sweat/breath) To replace that 2.7 L, of water you have to get: o .3-.4 metabolism o 1.0 of food o 1.3-1.4 of beverages Taking in water, most of the water enters the body in beverages Metabolic water: the product of chemical reactions, which contributes 10-15% of body needs. o EXAMPLE: palmitate+ 230 2 16CO 2 + 16H 2 0 Sedentary person loses < .07 L/day in sweat Exercise, can sweat 1.0-2.5 L per hour ( depending on intensity and environment ) HOT + DRY = lose a lot of water Replacing water losses is critical. Because signs of dehydration occur with 2% loss of body water (for 150 lb. person = about 3lbs) >4% some potentially dangerous symptoms may occur Replace water losses before they become dangerous by Pre-exercise. Pre-exercise: start out with hydration, water intake adequate in 24 hrs before exercise Sedentary person: 1.3 – 1.4 L/day = 48 oz. to balance the water loss
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Lecture 23 - Kin 110Lecture 23 Monday April 5th, 2010...

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