Table 4.

6-Minute Walk Test: Mean Values at Baseline and 3 Months Follow Up

Variables	Baseline (Mean ± SD)	3 Months (Mean ± SD)	6MWT Overtime	Intubation Status (Covariate)**
	N = 100	N= 76	p value	p value
Initial heart rate, b/m	84.28 ± 12.41	78.93 ± 12.2	< 0.001	0.417
Final heart rate, b/m	107.28 ± 17.00	104.85 ± 15.34	0.160	0.316
Δ Heart rate reduced by at 1 min	17.26 ± 11.07	19.16 ± 10.57	0.161	0.871
Heart rate 1 min post 6MWT, b/m	89.95 ± 13.34	84.99 ± 13.04	< 0.001	0.416
Initial Borg Dyspnea score	1.35 ± 0.48	1.09 ± 0.30	< 0.001	0.429
Final Borg Dyspnea score	2.47 ± 0.90	2.11 ± 0.59	< 0.001	0.427
Initial Borg Fatigue score	1.23 ± 0.46	1.07 ± 0.30	0.013	0.598
Final Borg Fatigue score	1.77 ± 0.75	1.41 ± 0.62	< 0.001	0.468
Initial SpO2, %	96.76 ± 1.86	97.84 ± 1.07	< 0.001	0.747
Lowest SpO2, %	93.7 ± 5.0	96.3 ± 2.0	< 0.001	0.772
ΔSpO2	3.01 ± 3.69	1.44 ± 1.85	< 0.001*	0.820
Δ SpO2 1 min post 6MWT, %	96.28 ± 4.58	97.92 ± 0.17	0.003	0.660
6MWD, m	386.50 ± 78.45	437.22 ± 58.91	< 0.001	0.631

Notes: *Wilcoxon test was used due to skewed distribution. **General Linear Model (GLM) was used. All significant p values in bold text.