Energy transformations in tissues and organs

Organ or tissue Adult male Adult female Child (6 months) mol/day jmol/g tissue per min Xmol/g tissue per min 

For calculation of rate of ATP generation from glucose, assuming complete oxidation of glucose, multiply rate of glucose utilisation by 30. 

On the basis of the data in this table, the calculated rate of glucose utilisation by the brain of an adult is about 3 g/hr. This is consistent with a rate of about 80 g in 24 hours (Chapter 14). 

The contribution of adipose tissue to the metabohc rate is small in a subject with about 20% of body weight as fat, it contributes about 5% to the total expenditure. 

In the male, skeletal muscle (about 40% of body weight) contributes, at rest, about 15% to the total metabohc rate. In the female, skeletal muscle (about 30% of body weight) contributes about 10% to the total expenditure. 

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