Basal metabolism and basal metabolism rate [BMR].pptx

the amount of energy that is expended at rest in a neutral environment after the digestive system has been inactive for about 12 hours.

1. Basal metabolism and basal metabolism rate [ BMR ] PRESENTED BY Mr.Karthick J.

2. Energy requirement varies with environmental conditions The rate at which the body uses energy while at rest to maintain a vital functions such as breathing and keeping warm Condition Awake but complete rest – physical /mental Fasting at least 12 – 18 hours – post absorption state Basal metabolism

3. Post absorptive state allowed to avoid Effect of digestion and absorption Prevent any chance of starvation 3] remain in normal living condition temperature , pressure and humidity 20 - 25 Basal metabolism

4. Under the condition the energy expendicture is only on Respiration Circulation Muscle tone [skeletal and smooth muscles ] Function of viscera [kidney ,liver and brain]

5. Basal metabolism refers to amount of energy required to 1.eat dinner 2. carry out all the vital process 3. run a marathon 4. keep heart beating Heat is given off by a subject who though awake is lying in a state of maximum physical and mental rest under comfortable condition of temperature pressure , humidity and 12- 18 hours post absorptive state

6. Energy produced , under such basal condition per unit time and per sq. meter of body surface area is known as basal metabolic rate It is the minimum amount of energy required to maintain life BMR of a sleeping person is lower than awake person Measured directly by the heat evolved indirectly by the volume of oxygen consumed and carbon dioxide /unit time bmr

7. The rate of metabolism at basal condition has found to vary in different individuals due to different factors Factors affecting bmr

8. The BMR of children is much higher than adults Is low in old age age

9. Women normally have a lower BMR than men BMR of females decline between the ages of 5 and 17 more rapidly than those of males gender

10. In cold climate BMR is a compensatory mechanism to maintain body temperature Environmental temperature

11. BMR is high in febrile state 12 percent rise is found associated with 1˚C rise in temperature fever

12. BMR is low in condition of malnutrition , starvation and wasting disease State of nutrition

13. Athelets ,soldiers and manual workers have a slight higher in BMR than leading sedentary workers profession

14. Age , gender ,body size and climate determine the ; Growth rate of an individual Basal metabolic rate pressure influence on growth rate

15. Quite number of drugs like caffeine Benzedrine epinephrine nicotine alcohol, increase the BMR drugs

16. Thank you