Dallas Bed Rest Study

Question 1

What did the study primarily aim to find?

Answer 1

Changes in VO2 max with 20 days of bed-rest and 50 days training.

Question 2

What did the study show, in relation to VO2 max?

Answer 2

That it is both de-trainable, and trainable (can increase and decrease over time)

Question 3

What effect did 20 days of bed rest have on HR, SV, and CO?

Answer 3

HR - increase
SV - large decrease
CO - small decrease

Question 4

What effect did training have on HR, SV, and CO?

Answer 4

HR - decrease
SV - linear increase
CO - large increase

Question 5

There was a higher O2 uptake under sedentary conditions compared to bed rest, what was this due to?

Answer 5

Increase in CO and change in SV.

Question 6

How did training further increase O2 uptake?

Answer 6

Further increase in CO, and also changes in the AV-O2 difference.

Question 7

How was it made clear that increased CO was largely due to changes in SV?

Answer 7

Max HR was the same throughout.