Lab 8

Question 1

From graphs of VE, or VE relative to VO2 vs time, where would the anaerobic threshold occur?

Answer 1

Anaerobic threshold would occur when the participant switches from anaerobic to aerobic energy usage.

Question 2

Is lactate threshold or the concentration of lactate in the blood during exercise a better predictor of 40km cycling tine trial performance for male and females?

Answer 2

The better predictor would be lactate threshold in both males and females

Question 3

How would you expect the Ventilatory threshold to differ in someone who has a low amount of mitochondria compared to someone with a high amount?

Answer 3

You would expect the threshold to differ as low mitochondria would have a lower threshold while a high mitochondria would have a higher threshold

Question 4

How would you expect the Ventilatory threshold to differ between someone who has a high % of slow twitch fibers vs someone with a low % of slow twitch?

Answer 4

A high % of slow twitch fibers would have an increase in threshold and a low % of slow twitch fibers would have a decreased threshold.

Question 5

How does the Ventilatory threshold change from before to an after period of 9 weeks of endurance training?

Answer 5

The threshold would increase after a 9 week period of endurance training

Question 6

High % of slow twitch fibers =

Answer 6

Increased Ventilatory threshold

Question 7

Low % of slow twitch fibers =

Answer 7

Decreased Ventilatory threshold

Question 8

Low mitochondria =

Answer 8

Decreased threshold

Question 9

High mitochondria =

Answer 9

Increased threshold

Question 10

Is anaerobic threshold higher during a cycle ergometer test or an arm crank ergometer test?

Answer 10

Anaerobic threshold would be higher with cycling
-this tells you that leg muscles use bigger muscle groups and generate more cardiovascular stress
-aerobic fitness is higher in leg muscles as they have more mitochondrial density compared to arms

Question 11

Is anaerobic threshold a good predictor of performance during a half marathon?

Answer 11

Yes it would be a good predictor because a higher anaerobic threshold would decrease the amount of lactic acid production and accumulation
-this allows you to exercise more before building up lactic acid

Question 12

What is a major limitation of the study by Gomez Molina on anaerobic threshold for marathon runners?

Answer 12

It was performed only on males