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HBIO 205 Lab FINAL |Questions with Complete Solutions
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HBIO 205 Lab FINAL |Questions withComplete Solutions
Astrand-Rhyming Test Principles - ✔-predictive
-requires only submaximal performance
-assumes heart rate-VO2 relationship at 50-90% max
-bike test (6 min)
Astrand-Rhyming Test Limitations (4) - ✔1. Assumes linear relationship between HR and VO2
2. Assumes similar max HR for all subjects of same age
3. Assumes constant economy
4. Results based on heart rate response (heart rate can vary based on situations)
Anaerobic Energy Production - ✔-ATP/CP and Glucose (Immediate energy and glycolysis)
-under 2 minutes of activity
-does not require oxygen
Aerobic Energy Production - ✔-Krebs cycle (glucose and fat)
-energy produced slowly over longer period of time
-over 2 min
-requires oxygen
Gender differences in VO2 max - ✔-men have higher average VO2
max -men have more FFM
-men have higher hemoglobin values
, Direct calorimetry - ✔-measures heat given off in an air-tight chamber
-bomb calorimeter used for food
-human calorimeter used for humans
limits of direct calorimetry (3) - ✔1. human calorimeter must be large and is impractical
2. exercising the chamber complicates the calculation because the machine (treadmill, bike) will
produce heat
3. some heat is lost in perspiration and not measured
Indirect calorimetry - ✔Can be used to indirectly measure the heat produced by a reaction
by measuring VO2. (Remember, there is direct relationship between VO2 and heat produced).
Data can then be used to calculate caloric expenditure
Part I of Caloric Expenditure Lab - ✔-treadmill/heart rate test
-3 different intensities (after each plateau)
-creates a regression line to predict heart rate/VO2
Activities in Part II of Caloric Expenditure Lab - ✔-walking
-jogging
-stair climbing
What does RER stand for? - ✔Respiratory exchange ratio
RER equation - ✔RER=VCO2/VO2
If RER is 0.82, thermal equivalent is... - ✔-4.825 kcal/LVO2
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