Caloric need is the number of calories per day that a person needs to support all functions when working to full capacity. There are three factors that determine a persons caloric need. All three when added together equal the amount of calories that a said person needs per day to run at full capacity.
BMR – Basal Metabolic Rate is defined as the minimum energy required to maintain the body’s life functions at rest. Ex. breathing, heart beating.
Men: (Lean Body Mass x 10) + (LBM x 2)=
Women: (LBM x 10) + (LBM)=
ACTIVITY LEVEL – A persons activity level varies from person to person, but just imagine how many calories are expended during the course of the day just doing your normal activities. A person burns calories doing everything, even sleeping takes energy. If we were to calculate calories burned throughout the day using the MET system and then we add in any calories burned during exercise we can determine a persons activity level.
A person must calculate the number of hours that they are engaged in a certain activity and use a MET conversion chart. For our purposes we will use rough factors for average people who do moderate amounts of exercise.
Men: 900 – 1500 calories per day
Women: 700 – 1200 calories per day
TEF- The thermic effect of food is the increase in energy expenditure due to an increase in cellular activity associated with the digestion, absorption and metabolism of food.
The amount of calories that a person will burn is equal to 10% of the amount of calories consumed.
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