Question

An appropriate daily dietary energy intake for a 70 kg adult 

A. Who is sedentary and wishes to lose weight is nearer 1500 than 3000 kcal (6.3 versus 12.6 MJ). 

B. Convalescing from a wasting illness would be nearer 3000 than 2000 kcal (12.6 versus 8.4 MJ). 

C. In training averaging 10 METS for 6 hours/day is more than twice that required for sedentary conditions. 

D. Athlete should be sufficient to avoid ketoacidosis. 

E. Should contain as little carbohydrate as possible.

Answer 1

A. True This gives a daily deficit of about 500 kcal which would be supplied by metabolizing fat stores. 

B. True This provides a positive energy balance and allows replenishment of body protein and fat, assuming an adequate protein content of the diet. 

C. True Metabolizing at 10 METS for 6 hours (60 MET hours) would itself use up more than the daily sedentary requirement (e.g. sleeping for 8 hours, about 8 MET hours; average 2 METS for 16 hours, 32 MET hours). 

D. True Ketoacidosis impairs muscle function. 

E. False A moderate carbohydrate intake is required to avoid ketoacidosis; a relatively high carbohydrate intake is required for exercise.