Table 1.

Overview of the inclusion criteria for the two randomised controlled trials

Inclusion criteria	BASE-TRAIN trial	BASE-ELECTRIC trial
Exercise modality	NLPE	NMES
Age	40–80 years	40–80 years
mMRC dyspnoea grade	≥2	≥3
No exacerbation/hospitalisation	<4 weeks	<4 weeks
Endurance time*	Not specified	100–300 s
Quadriceps strength	Not applicable	<80% predicted
PR programme	Inpatient+Outpatient	Inpatient

*Endurance time is measured as walking endurance time (BASE-TRAIN) or cycle endurance time (BASE-ELECTRIC).

mMRC, modified Medical Research Council; NLPE, non-linear periodised exercise; NMES, neuromuscular electrical stimulation; PR, pulmonary rehabilitation; s, seconds.