Question

Calculate the average metabolic rate of a 65-kg person who sleeps 9.5 h , sits at a desk 7.0 h , engages in light activity 3.5 h , watches TV 1.5 h , plays tennis 2.0 h , and runs 0.50 h daily.

Figure 1 of 1

TABLE 15-2 Metabolic Rates (65-kg human) Metabolic Rate (approximate) kcal/h watts 60 70 100 15 200 230 Activity Sleeping Sitting upright Light activity (eating, dressing, household chores) 400 460 Moderate work (tennis, walking) Running (15km/h) 1000 1150 Bicycling (race) 1100 1270

Answer 1

Solution)

We know,

Average metabolic rate = total energy spent/ total time

Hence, substituting values

= (9.5*70+7*115+3.5*230+1.5*460+2*1150+0.5*1270)/24

= 245.83 Watts

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