The Physiologic Effects of an Acute Bout of Supramaximal High-Intensity Interval Training Compared with a Continuous Exercise Bout in Patients with COPD

Table 2

Performance data on the HIIT and CWR protocols.

	HIIT	CWR
Work interval (W)	112 ± 29	63 ± 15*
Recovery interval (W)	16 ± 5	N/A
Average WR (W)	32 ± 8	63 ± 15*
TTE/SL (s)	542 ± 293	202 ± 82*
Total work performed (kJ)	23.3 ± 9.5	12.0 ± 6.0*

Mean ± SD. ^∗𝑃<0.05 versus HIIT. WR: work rate; TTE/SL: time to exhaustion or symptom limitation; HIIT: high-intensity interval training session; CWR: constant work rate session.