Solution By Steps

Step 1: Calculate the lower limit of protein calories

To find the lower limit, multiply

2200 \, ext{kcal} by

10\%:

Lower limit

= 2200 imes 0.10

Step 2: Calculate the upper limit of protein calories

To find the upper limit, multiply

2200 \, ext{kcal} by

35\%:

Upper limit

= 2200 imes 0.35

Step 3: Convert the calorie range to grams of protein

Protein provides

4 \, ext{kcal} per gram. Divide the lower and upper limits in calories by

4 to get the range in grams:

Lower limit in grams

= \frac{ ext{Lower limit in kcal}}{4}

Upper limit in grams

= \frac{ ext{Upper limit in kcal}}{4}

Final Answer

The range of calories from protein is

220-770 \, ext{kcal}.

The range in total grams of protein per day is

55-192.5 \, ext{g}.

Key Concept

Macronutrient Distribution Range (AMDR)

Key Concept Explanation

The AMDR provides guidelines for the proportion of calories that should come from each macronutrient. In this case, the AMDR for protein suggests that

10-35\% of total calories should come from protein. This range ensures adequate protein intake for various health benefits, including muscle maintenance and repair.