Table 5.

Correlation matrix between CI change and traditional 6‐minute walk parameters

	Healthy controls	PH
	R (p)	R (p)
N	18	30
Distance walked (m)	0.17 (0.5)	0.62 (<0.001)
Distance walked (% of predicted)	0.5 (0.04)	0.40 (0.03)
HR at baseline	−0.38 (0.13)	−0.01 (0.98)
HR max	0.59 (0.01)	0.48 (0.007)
HR recovery at 1 minute	0.77 (<0.001)	0.57 (0.001)
HR recovery at 2 minute	0.69 (0.002)	0.65 (<0.001)
HR recovery at 3 minute	0.64 (0.004)	0.66 (<0.001)

HR = heart rate.