Table 2.

A comparison of the results at peak exercise between the ITM and ICE tests.^a

	ITM	ICE	p value
Duration (seconds)	621 (97)	576 (150)	0.30
$\stackrel{.}{\text{V}}{\text{O}}_{2\text{pk}}$ (mL minute−1)	2301 (535)	1814 (389)	<0.001
$\stackrel{.}{\text{V}}{\text{O}}_{2\text{pk}}$ (mL minute−1 kg1)	23.5 (5.6)	18.4 (4.2)	<0.001
$\stackrel{.}{\text{V}}{\text{O}}_{2\text{pk}}$ (% predicted)	85 [19]	68 [16]	NA
$\stackrel{.}{\text{V}}\text{C}{\text{O}}_{2\text{pk}}$ (mL minute−1)	2662 (755)	2135 (551)	<0.001
RER	1.18 (0.08)	1.17 (0.12)	0.69
$\stackrel{.}{\text{V}}{\text{E}}_{\text{pk}}$ (L minute−1)	83.3 (24.7)	66.9 (22.8)	<0.001
$\stackrel{.}{\text{V}}{\text{O}}_2$ @ AT (mL minute−1)	1463 (238)	1208 (165)	<0.001
AT (%$\stackrel{.}{\text{V}}{\text{O}}_2$ predicted)	58 (12)	47 (13)	0.003
HR (bpm)	144 (29)	130 (21)	0.01
HR % predicted	89 (14)	80 (13)	<0.001
SpO2 (%)	98 (1)	98 (1)	0.18
BP systolic (mmHg)	165 (31)	166 (33)	0.90
BP diastolic (mmHg)	82 (13)	75 (17)	0.04
BS	6.6 (1.7)	7.1 (2.2)	0.45
LE	5.8 (2.1)	7.5 (1.6)	0.01

ITM: oncremental treadmill test; ICE: incremental cycle ergometer; HR: heart rate; SpO₂: oxygen saturation; BP: blood pressure; $\stackrel{.}{\text{V}}{\text{O}}_{2\text{pk}}$: peak oxygen uptake; $\stackrel{.}{\text{V}}\text{C}{\text{O}}_{2\text{pk}}$: peak carbon dioxide elimination; RER: respiratory exchange ratio; $\stackrel{.}{\text{V}}\text{E}$: ventilation; BS: Borg Score Breathless Scale; LE: Borg Score Leg Effort; AT: anaerobic threshold.

^aMean (SD) HR predicted = 220 – age (years), NA: not applicable.