Which of the following indicators are useful in assessing respiratory muscle strength?
1. Maximum voluntary ventilation (MVV)
2. Forced vital capacity (FVC)
3. Dead space-to-tidal volume ratio (VD/VT)
4. Maximum inspiratory pressure (MIP)
a. 1 and 3 only
b. 2 and 4 only
c. 3 and 4 only
d. 1, 2, and 4 only
Question 2
A reversible impairment in the response of an overloaded muscle to neural stimulation best de-scribes which of the following?
a. Central respiratory muscle fatigue
b. Transmission respiratory muscle fatigue
c. Contractile respiratory muscle fatigue
d. Chronic respiratory muscle fatigue