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Unformatted text preview: 1 Energy Cost of Physical Activity Energy cost we are referring to how many kilocalories (kcal) being used Might want to know this if trying to __________ Also used when doing exercise prescription (example later.) Ways to Express Energy Expenditure Kcal/min _________ METS Total energy expenditure over the day (kcal/d)= _________metabolic rate (BMR) + energy expended in activity Why do we have a BMR? Service functions e.g. heart contracting, liver metabolism, etc. _______and turnover e.g. proteins throughout body NOTE: ____(resting metabolic rate) is similar to BMR and will be used as same thing in this class Conditions for Basal Metabolic Rate (BMR) Resting _________ Fasted 12 hours No exercise 24 hours Thermoneutral environment 2 Factors that Influence Basal Metabolic Rate Body weight Body composition Age ________ Disease States/infection Genetic factors Body Weight/Composition More cells mean more energy used. Muscles use more energy than fat tissue. BW kcal/min AGE The typical drop in BMR is _____ per decade What determines Activity Expenditure? Planned exercise Intensity/pace Body weight Duration Frequency __________ activity Linear Relationship Between Energy Expenditure and______ Body Weight A 50 kg(110 lbs) person running at 6 mph for 30 minutes uses about ____kcal A 82 kg (180 lbs) person running at the same pace and duration uses about 393 kcal....
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This note was uploaded on 04/01/2008 for the course HNFE 3864 taught by Professor Jwrankin during the Fall '07 term at Virginia Tech.
- Fall '07