The Average Requirement Of Energy

Better Essays

Estimated Average Requirements (EARs) The EAR is an estimate of the average requirement of energy or a nutrient needed by a group of people (i.e. approximately 50% of people will require less, and 50% will require more). Reference Nutrient Intakes (RNIs) The RNI is the amount of a nutrient that is enough to ensure that the needs of nearly all a group (97.5%) are being met. Lower Reference Nutrient Intakes (LRNIs) The LRNI is the amount of a nutrient that is enough for only a small number of people in a group who have low requirements (2.5%) i.e. the majority need more. Please see below tables including DRVs showing macro and micro nutrients in relation to specific age groups: Table 1. Previous Estimated Average Requirements for …show more content…

Sources: Department of Health, Dietary Reference Values for Food Energy and Nutrients for the United Kingdom, HMSO, 1991. SACN Vitamin D and Health, 2016. DRVs are estimates of energy and nutrient intakes and should therefore be used as guidance but should not be considered as exact recommendations. They show the amount of energy/nutrient that a group of people of a certain age range (and sometimes sex) needs for good health and they only apply for healthy people. Task 3 Energy (calories) comes from the fat, carbohydrate, protein and alcohol the diet contains. What we eat and drink is ENERGY IN. What we burn through physical activity is ENERGY OUT. Our ENERGY IN should match our ENERGY OUT. We burn a certain number of calories determined by a person’s Basel Metabolic Rate (BMR). Many factors include our age, body size, gender, place of habitation, whether we’re ill, injured, pregnant can all matter too, i.e. a big person burns more calories every day than a small person. We also burn a certain number of calories through our daily routine. However, it is important to understand that people with physically active lifestyles burn more calories than those with sedentary or not-as-active lifestyles. The same amount of ENERGY IN and ENERGY OUT over time = weight stays the same More IN than OUT over time = weight gain More OUT than IN over time = weight

Get Access
Get Access