Table 2.

Means and standard deviations (on and off medication) when the Modified Bruce Treadmill Test (mBTT) was stopped due to achievement a perceived 7 out of 10 fatigue. P values represent the t-test comparisons of the two conditions.

	ON medication	OFF medication	P value
mBTT level	2.6 (1.5)	3.2 (2.7)	P=.123
Test duration (minutes)	10.6 (5.2)	11.9 (8.7)	P=.309
Gait speed (meters per second)	1.10 (0.55)	1.01 (0.49)	P=.318
Treadmill incline (degrees)	11.0 (5.0)	10.8 (5.6)	P=.783
Heart rate (beats per minute)	110.0 (23.5)	109.3 (18.4)	P=.900
Oxygen saturation (%)	96.4 (2.0)	96.2 (2.3)	P=.754
Fatigue rating (VAS-F, 0–10)	7.1 (0.3)	7.1 (0.6)	P=770