Margaret is a marathon runner, and she knows that with her daily training schedule she needs to eat more protein than an average woman her age. Being a lifelong runner, she is also cognizant about keeping her weight in check to avoid excessive strain on her knees and feet. Since she also knows that excess proteins won’t increase her performance, but will be metabolized into fat and stored in her body, she wants to eat just the right amount of protein. Margaret’s current weight is 115 lb. Her schedule is very intense. She works as a physical therapist, runs at least 9 to 12 miles every day, and does moderate weight training for a half hour every day as well. She runs competition marathons once every 2 months. She is not a strength athlete. Margaret loves lean meat like fish and chicken, and eats it at least five times per week. As a non-vegetarian endurance athlete, Margaret needs 1.2-1.4 grams of protein/kg body weight daily. Calculate how many grams of protein Margaret should consume on a daily basis. Round the number of grams to the nearest whole number. During calculations, use numbers rounded to the first decimal place. Because protein requirement is a range, please enter two numbers: lower and upper range values, respectively. Separate the lower and upper range values, in that order, by a comma.

According to the Academy of Nutrition and Dietetics endurance athletes, like Margaret needs about 0.55 to 0.9 grams of protein per pound while Strength-athletes that are trying to build muscle mass need more than 0.9 grams of protein per pound.

Since Margret is an Endurance athletic according to the question she will be needing:

115 lb x 0,55 =63,25 grams

115 lb x 0,9 =103,5 grams

Therefore Margaret should consume between 63 and 103 grams of protein daily.