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 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
 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
 Under the condition the energy expendicture is only on
 Respiration
 Circulation
 Muscle tone [skeletal and smooth muscles ]
 Function of viscera [kidney ,liver and brain]
 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
 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
 The rate of metabolism at basal condition has
found to vary in different individuals due to
different factors
 The BMR of children is much higher than adults
 Is low in old age
 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
 In cold climate BMR is a compensatory
mechanism to maintain body temperature
 BMR is high in febrile state
 12 percent rise is found associated with 1˚C
rise in temperature
 BMR is low in condition of malnutrition ,
starvation and wasting disease
 Athelets ,soldiers and manual workers have
a slight higher in BMR than leading
sedentary workers
 Age , gender ,body size and climate determine
the ;
Growth rate of an individual
Basal metabolic rate
pressure influence on growth rate
 Quite number of drugs like
caffeine
Benzedrine
epinephrine
nicotine
alcohol, increase the BMR
Thank you

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Basal metabolism and basal metabolism rate [BMR].pptx

  • 1.
  • 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
  • 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
  • 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
  • 7.  The rate of metabolism at basal condition has found to vary in different individuals due to different factors
  • 8.  The BMR of children is much higher than adults  Is low in old 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
  • 10.  In cold climate BMR is a compensatory mechanism to maintain body temperature
  • 11.  BMR is high in febrile state  12 percent rise is found associated with 1˚C rise in temperature
  • 12.  BMR is low in condition of malnutrition , starvation and wasting disease
  • 13.  Athelets ,soldiers and manual workers have a slight higher in BMR than leading sedentary workers
  • 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