Respiratory motor output during an inspiratory capacity maneuver is preserved despite submaximal exercise.

Highlights: [•] Diaphragm EMG reached a plateau during either 80% or 60% constant work rate exercise tests. [•] Plateau of the diaphragm EMG during exercise does not mean that there is neural inhibition. [•] Inspiratory capacity maneuver seldom entails a maximal effort even in well trained normal subjects. [ABSTRACT FROM AUTHOR]