Concept explainers
(a) If Bill, who weighs 160 pounds, consumed 2025 mL of
(b) Assume that, on an average diet, people generate 4.825 kcal of energy for every liter of oxygen they consume. How many calories (kcal) does Bill need per thy? (Hint:
No need to include Bill’s weight in this calculation.)
(a)
To determine:
The metabolic rate of a person in units of kcal/kg/hr.
Introduction:
Basal metabolic rate is also represented as BMR. It is defined as the rate of the expenditure of energy per unit time at rest by the endothermic animals. The BMR at rest is low as compared to the body undergoing vigorous activities (such as exercise).
Explanation of Solution
Given:
The weight of a person is 160 pounds. 2025 ml of O2is consumed during a six-minute period.
1 Kg= 2.2lbs. The metabolic rate of the given person can be calculated as follows:
The metabolic rate of a person is 1.41 kcal/kg/hr.
The metabolic rate of the person in the given condition is 1.41 kcal/kg/hr.
(b)
To write:
The calories required by the given person per day.
Introduction:
The basal metabolic rate is also represented as BMR. It is defined as the rate of the expenditure of energy per unit time at rest by the endothermic animals. The BMR at rest is low as compared to the body undergoing vigorous activities (such as exercise).
Explanation of Solution
Given:
4.825 kcal of energy is generated for every liter consumption of oxygen on an average diet in people. The calories needed by the given person per day can be calculated as given below:
Oxygen consumption in one hour has already been calculated as 20.25 L.
The calories needed by the given person per day is 2344.95 Kcal.
The calories needed by the given person per day is 2344.95 Kcal.
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Chapter 56 Solutions
Laboratory Manual for Human Anatomy & Physiology Main Version
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