Table 6.1 Normal body compositon (of a 70kg man)
Table 6.2 Daily requirements for energy
Table 6.3 Energy expenditure of a normal adult
TimekcalkJTotal range kcal (kJ)
Table 6.4 Macronutrient stores in relation to daily intake
MacronutrientTotal amount in bodyEnergy equivalentDays' supply if the only energy sourceDaily intake g% of store
Circulating in plasma5g
Stored in adipocytes12–18kg
Protein and amino acids12kg200MJ1000.8
Free amino acids100g
Table 6.5 Recommended daily amounts of some nutrients for population groups
Age range (years)Occupational categoryThiamin (mg)Riboflavin (mg)Nicotinic acid equivalentsa (mg)Total folate (μg)Ascorbic acid (mg)Vitamin A retinol equivalentsb (μg)Vitamin D cholecalciferol (μg)Calcium (mg)Iron (mg)
a 1 nicotinic acid equivalent = 1mg available nicotinic acid or 60mg tryptophan.
b 1 retinol equivalent = 1μg retinol of 6μg β-carotene or 12μg other biologically active carotenoids.
† No dietary sources may be necessary for children and adults who are sufficiently exposed to sunlight but during the winter children and adolescents should receive 10μg (400 i.u.) daily by supplementation.
‡ This intake may not be sufficient for 10% of girls and women with large menstrual losses.
* For the third trimester only.
From A Dictionary of Nursing in Oxford Reference.
Subjects: Medicine and Health.