Adults need daily heat
The daily calorie required by adults = the basic calorie required for basic human metabolism + the calorie required for physical activity + the calorie required to digest food。
The amount of heat required to digest food = 10% x (minimum heat required for basic human metabolic + heat required for physical activity)
Daily calorie for adults = 1. 1 x (minimum basic calorie for basic human metabolic needs + calorie for physical activity)
Daily calorie required by adults
Men: 9250 - 10090 kj
Female: 7980 - 8820 kj
Note: the daily calorie provided by food should be no less than 5,000 kj-7,500 kj, which is the least energy available to sustain normal human life
Basic calorie required for basic human metabolism
Simple algorithm
Female: basic calorie (kcal) = body weight (kg) x 9
Men: basic calorie (kcal) = body weight (cm) x 10
Accuracy algorithm (kilocal)
Women
18-30 years: 14. 6 x body weight (kg) + 450
31-60 years 8. 6 x body weight (kg) + 830
Over 60: 10. 4 x body weight (kg) + 600
Men
18-30 years: 15. 2 x body weight (kg) + 680
31-60 years 11. 5 x body weight (kg) + 830
Over 60: 13. 4 x body weight (kg) + 490
The function of heat
The heat comes from carbohydrates, fats, proteins。
Hydrocarbons generate heat = 4 kcal/g
Protein produces heat = 4 kcal/g
Fat produces heat = 9 kcal/g。
Units of heat
1 kcal = 4. 184 kj
1 kcal: is the calorie that can raise 1 ml of water by 1° c。
Unit translation
Cards, kilocalories, large cards, calories and kio are all caloric units, the conversion between them being:
1 card = 1 calories = 4. 186 joules
1 kcal = 1 kcal = 1,000 kcal = 1,000 kcal = 4186 jj = 4. 186 kj。
The calorie (the “card”, abbreviated “calorie”) is defined as the amount of heat required to increase 1 gram of water by 1°c at 1 atmospheric pressure. 1 kilocalories equals 1,000 calories and about 4186 joules。
Large cards, equivalent to kcal/kg (kcal) in engineering units, are used mostly for nutritional measurement and fitness manuals。
