This document discusses the basic metabolic rate (BMR), which is defined as the minimum amount of energy required by the body to maintain life at complete physical and mental rest. It notes that several vital functions occur at a basal level, such as the working of organs, nerve impulse conduction, and ion transport. Normal BMR values for adults are provided as 1600 calories per day for men and 1400 calories per day for women. Several factors that can affect a person's BMR are described, including surface area, sex, age, physical activity level, hormones, environment, starvation, fever, and disease status.

1. HAP-II
ENERGETICS
BASIC METABOLIC RATE(BMR)
Mr N.JEGAN
Associate Professor
K.M.COLLEGE OF PHARMACY.
MADURAI.

2. BMR-Introduction
Food is the fuel source of the body, the ingested
food undergoes metabolism to liberate energy required
for the vital activities of the body.

3. BMR-Definition
BMR is minimum amount of energy required by the
body to maintain life at complete physical and mental rest in
post absorptive state.
Several functions within the body occurs at basal condition
Working of heart and other organs
Conduction of nerve impulse
Reabsorption by renal tubules
Gi motility
Ion transport across membranes

4. Measurement of BMR formula

5. Normal values of BMR
◦Adult man: 35-38 cal/sq.m/hr or 1600cal/day
◦Adult woman: 32-35 cal/sqm/hr or 1400cal/day
◦A BMR value between -15% and +20% is considered normal

6. Factors affecting BMR
1.Surface area: directly proportional to surface area
2.Sex: men have marginally higher BMR (5%)
3.Age: in infants and growing children BMR is higher. In adults
BMR decreases at the rate of 2% per decade of life
4. Physical activity: increase with regular exercise
5.Hormones: Thyroid hormones increase BMR. Epinephrine,
cortisol, sex hormones and growth hormone hormones
increase BMR

7. 6.Environment: BMR is higher in cold climates compared to
warm climates
7.Starvation: during starvation a decrease in BMR up to 50%
has been reported
8. Fever: fever increases BMR. 10% increase for every 1⁰C rise
in body temperature
9. Disease status: BMR is elevated in infections, leukemia,
cardiac failure hypertension etc.

8. THANK YOU…!