KINE 1020 Lecture Notes - Lecture 3: Interval Training, Caffeine, Bicarbonate
6 Mar 2016
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Lecture notes feb 1, 3, 5, 8. Oxygen extraction: oxygen diffuses in capillaries because there is max area for diffusion and more time for diffusion to occur (transit time/diffusion time, oxygen travels form high concentration to low concentration. Met = 3. 5 ml o2/kg/min (metabolic equivalent: close to resting, ex; sitting quietly. Exercise and heart rate: heart rate controlled by nervous system, parasympathetic nervous system always send signal to slow down heart (works. 100-110 bpm: sympathetic stops parasympathetic to get heart beating faster, max heart rate = 220-age. Exercise and stroke volume: increases with exercise, more blood in ventricles will cause it to stretch and allow for more blood to be pumped overall, helps to return blood more quickly (frank-starling mechanism) Exercise and oxygen delivery: to increase vo2 you can; ideal is to deliver more and extract and greater proportion, delivery is a function of hemoglobin + blood delivery.
