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UMass Amherst KIN 470 - 2.10.14 kin 470 lab 2 videos

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2.10.14 kin 470 lab 2 videos- 1st slide- Efficiency = energy produced/energy consumed- Problem; when exercising, can’t measure all energy produced by system (work & heat)o Physics definition of worko Heat produced- Economy = oxygen use/ work rate- Units: ml/kg/Watt (O2/body weight/Power) or L/Watt (O2/Power)- 2nd slideo energy expendture  steady state O2 consumption will be a surrogate for energy expenditure O2 consumption (VO2) will be measured using open circuit spirometry Units:- L/min: NOT scaled to body weight- -ml/kg/min: scaled to body weight- MET: scaled to resting O2 consumption- 3rdo Regions O2 deficit Steady state- Supply=used oxygen EPOC – excess post exercise oxygen consumption- Fast phaseo Restore oxygen stores- Slow phaseo Lactate back to glycogeno Hormone levels back to normalo Body temp back to normal- 4tho VO2 vs. work rateo Submax work range circled (8:44 min)o Vo2 vs. exercise time (light and heavy)- 5th Lab timeo protocolo minute 0-2o minute 2:01-7 obtain baseline VO2 (rest)o minute 7:01-12 recovery period (rest)o minute 12:01-17 second exercise bout (120W: 60 RPM x 2 kg)o minute 17:01-22 Recovery period (rest)o responsibilities: subject time keeper bike resistance


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UMass Amherst KIN 470 - 2.10.14 kin 470 lab 2 videos

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