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Katie is a 28-year-old professional woman who is 5 feet 8 inches tall and vigilantly maintains her weight at 118 pounds by following a lacto-ovo (non-fat milk and egg whites only) vegetarian diet that supplies approximately 1200 calories a day. With her understanding that protein should provide between 10 and 35 percent of her daily calories, she reasons that her daily intake of 40 grams of protein from milk, eggs, legumes, and nuts is adequate for her needs. She is concerned, however, that she has been sick more than usual and has experienced two stress fractures in her leg over the past three years while exercising. 1. What is the protein RDA per kilogram of healthy body weight? 2. Assuming a healthy weight for Erin is 141 pounds, what is her recommended daily protein requirement? 3. Remembering that protein provides 4 kcalories per gram, what percentage of Erin's current total energy intake comes from protein?

Respuesta :

Answer:

1.- The protein RDA is 0.8 g/Kg of body.

Explanation:

1.- This is a standard value.

2.- If a pound = 0.45 kg

    so   141 pounds = x

x= 141 pounds  x 0.45 kg = 63.45 Kg

If the healthy body needs 0.8 g protein = 1 kg body

                                                 x                = 63.45 kg

x= 63.45 kg x 0.8 = 50.76 g of protein every day.

3.- If 1 g protein = 4 Kcal

        50.76 g      =   x

x= 50.76 g protein x 4 cal = 203.04 cal

If her diet is based in a 1200 cal so...

(203.04 cal / 1200 cal)  x 100 % = 16.92 % of her total energy intake

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