KINESIOL 3U03 Lecture 6: KIN3U03 march 22nd
22 Feb 2019
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Document Summary
Physical activity and energy expenditure: assessment, trends, and tracking. Activity doesn"t track really well from child-adolescent-adulthood. => pa is a major modifiable risk factor for chronic disease. Defined as any bodily movement produced by skeletal muscle that results in energy expenditure => cost energy: there"re important biological implications of physical activity. Components: mechanical => muscular contraction, force/velocity/acceleration, physiological, o2 uptake/metabolic energy/mets, behavioural, type of pa/environmental and social influence. Adaptive energy expenditure: how body changes based on adapting climatic stress (exposure to hear/cold/altitude, more difficult to measure, not common. Measured in the morning (rested), after 12 hours fasted: fasted (usually in the morning, minimal sns activity. Supine position, calm setting => by using distraction techniques (watching tv: make participants as relax as possible during measurement. Thermoneutral environment (23-25 degree/50% rh) => avoid heat impact on metabolism. Simple measurement vo2 measurement (take 20 minutes to collect stable data > daily expenditure)
