Table 2.

Spearman’s Correlation of ESWT with possible anchors

	ΔESWT (s)	ΔESWT (%)	ΔESWT (m)
∆ Wpeak, W	0.568	0.525	0.610
∆ CRQ total	0.449	0.441	0.428
∆ CRQ dyspnoea	0.313	0.299	0.305
∆ CRQ fatigue	0.373	0.328	0.350
∆ CRQ emotion	0.363	0.351	0.353
∆ CRQ mastery	0.389	0.338	0.381
∆ 6MWD, m	0.307	0.318	0.275

Values printed bold p < 0.05.

Wpeak: peak work rate; CRQ: Chronic Respiratory Questionnaire; 6MWD: six minute walking distance; ΔESWT: change in endurance shuttle walking test.