EXSS2026 Lecture Notes - Lecture 3: Low-Density Lipoprotein, Built Environment, Avon Products
22 Aug 2018
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Document Summary
Increase in number of alveoli (20million at birth to 300million at 8yo then stays constant) through childhood/adolescence: breaths/min decrease drastically from birth adulthood. Hr x sv: for every 1met improvement of vo2 max, there is on average a 13% decrease in the chance of dying. Edv - esv: physical activity results in an increased vo2max (unlike children) Exercise in childhood & adolescence: lecture 3: economy of movement, (cid:498)how much o2 needs to be consumed(cid:499, for the same running speed, younger children have higher net o2 cost, higher effort (o2 consumption) = less efficient. 70% of maximum: children"s aerobic reserve increases as they get older. Physical activity & sedentary behaviour physiological recommendations: 0-5 years, physical activity: infants (supervised floor play), toddlers (active for ~3hr/day, sedentary: children <2yo (no time watching tv etc. [60min/day: mainly 0-1hr/day or 1-2hr/day, only 29% (1/3) of children meet the recommendations for daily sedentary behaviour.
