VO2max

Question 1

VO2max

Answer 1

provides a quantitative measure of maximal cardiopulmonary fitness and a person’s capacity for aerobic ATP re-synthesis

Question 2

VO2max test

Answer 2

evaluates the highest rate at which an individual can consume oxygen during aerobic exercise
can be measured on most exercise modes
in athletic populations: want to test VO2max on the mode that the person most commonly trains
general population: treadmill is optimal to elicit highest VO2max values
submaximal aerobic exercise tests can be used to predict VO2max

Question 3

non-modifiable factors influencing maximal oxygen consumption

Answer 3

genetics/heredity
sex
age

Question 4

aerobic exercise training on VO2max

Answer 4

excelling in endurance sports requires an above average VO2max, and a high VO2max requires an integrated and high-level response of physiological systems to endurance training
VO2max generally increases 15 to 25% over the first 3 months of intensive training and may improve by 50% over a 2-year interval depending on initial fitness level

Question 5

VO2max is influenced by training factors such as

Answer 5

initial level of aerobic fitness
training intensity
training volume
mode of training

Question 6

mode of exercise training and VO2max

Answer 6

specificity of training- the greatest improvement occurs when the test duplicates the training exercise
engage the appropriate muscles required by the activity
provide an intensity at a level sufficient to stress the cardiovascular system

Question 7

body composition and VO2max

Answer 7

variations in body size and composition explain ~70% of the differences in absolute VO2max (L/min) among individuals
the effect of body size and composition on absolute VO2max has led to the common practice of expressing oxygen consumption relative to surface area, body mass (mL/kg/min), and/or fat free mass (mL/kg FFM/min)
a higher percent body fat is associated with a lower VO2max
higher body mass requires more energy
fat mass does not contribute to aerobic energy production during exercise

Question 8

pulmonary diffusing capacity

Answer 8

limits VO2max in elite, highly trained endurance athletes

Question 9

maximal cardiac output

Answer 9

limits VO2max in 70-85% of untrained and trained individuals

Question 10

oxygen carrying capacity

Answer 10

can limit VO2max in individuals with anemia, chronic kidney disease, HIV/AIDS, rheumatoid arthritis, Chron’s disease, as well as in cancer patients undergoing chemotherapy

Question 11

skeletal muscle

Answer 11

limiting factor of VO2max when assessed in small muscle groups