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Table 2 Summary of outcome variables from incremental exercise tests (n = 8)

From: Feasibility of cardiopulmonary exercise testing and training using a robotics-assisted tilt table in dependent-ambulatory stroke patients

Outcome variable

Value

Range

Peak exercise variables

 V'O2peak absolute (mL/min)

844.8 ± 265.7

352.0 – 1176.0

 V'O2peak relative (mL/min/kg)

11.9 ± 4.0

5.6 – 17.5

 V'O2peak as % of predicted V'O2max [14]

45.2 ± 8.8

32.3 – 58.2

 HRpeak (beats/min)

117.3 ± 31.5

66.0 – 155.0

 HRpeak as % of predicted HRpeak (220-age)

72.0 ± 17.7

44.9 – 99.3

 SBP (mmHg)

192.9 ± 29.9

140.0 – 220.0

 DBP (mmHg)

88.5 ± 12.7

78.0 – 110.0

 Rate-pressure product

230.0 ± 79.8

92.4 – 341.0

 RERpeak

1.00 ± 0.10

0.78 – 1.20

 Borg CR10 RPE scale dyspnea

5.4 ± 2.8

1.0 – 9.0

 Borg CR10 RPE scale leg effort

6.6 ± 1.9

4.0 – 9.0

 Oxygen cost of work (mL/min/W) (n = 6)

21.9 ± 3.8

16.0 – 26.0

 WRpeak (W)

22.5 ± 13.0

5.5 – 38.6

 Time to V'O2peak (sec)

742.5 ± 161.8

600.0 – 1080.0

Submaximal exercise variables (n = 7)

 Absolute V'O2 at VT (mL/min)

677.1 ± 187.1

520.0 – 1053.0

 Relative V'O2 at VT (mL/kg/min)

8.9 ± 2.9

6.9 – 15.0

 VT as % of V'O2peak

75.1 ± 17.6

52.3 – 100.8

 RER at VT

0.88 ± 0.08

0.78 – 0.96

 Absolute V'O2 at RCP (mL/min) (n = 6)

800.3 ± 206.7

547.0 – 1136.0

 Relative V'O2 at RCP (mL/kg/min) (n = 6)

10.7 ± 3.1

7.3 – 16.2

 RCP as % of V'O2peak (n = 6)

84.8 ± 11.6

70.6 – 99.3

 RER at RCP (n = 6)

1.02 ± 0.13

0.84 – 1.24

  1. Values are mean ± SD
  2. Abbreviations: V'O2peak, peak oxygen uptake; V'O2, oxygen uptake; HR, heart rate; HRpeak, peak heart rate; RERpeak, peak respiratory exchange ratio; SBP, systolic blood pressure; DBP, diastolic blood pressure; RPE, rating of perceived exertion; WRpeak, peak work rate; VT, 1st ventilatory threshold; RER, respiratory exchange ratio; RCP, respiratory compensation point