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Table 3 VCP, S 1 , and S 2 values at HA and SL

From: Minute ventilation and heart rate relationship for estimation of the ventilatory compensation point at high altitude: a pilot study

 

HA

SL

P value

VCP - Δ V ˙ E / Δ HR (ml/min)

1,325.3 ± 214.7

1,822.0 ± 371.6

<0.05

VCP - V ˙ E / V ˙ CO 2 (ml/min)

1,315.1 ± 180.8

1,839.1 ± 359.5

<0.05

S 1 V ˙ E / HR (l/bp)

1.09 ± 0.33

0.76 ± 0.32

<0.01

S 2 V ˙ E / HR (l/bp)

4.8 ± 2.5

1.4 ± 0.6

<0.05

S 1 V ˙ E / V ˙ CO 2

0.043 ± 0.005

0.025 ± 0.001

<0.01

S 2 V ˙ E / V ˙ CO 2

0.114 ± 0.052

0.047 ± 0.01

<0.05

S 2 / S 1 V ˙ E / HR

4.5 ± 1.9

2.0 ± 0.8

NS

S 2 / S 1 V ˙ E / V ˙ CO 2

2.7 ± 1.5

1.9 ± 0.4

NS

  1. NS, not significant.