Table 3 HR changes at different stages of training.

From: Combined effect of heart rate responses and the anti-G straining manoeuvre effectiveness on G tolerance in a human centrifuge

Variables

Qualified (N = 428)

Disqualified (N = 102)

P value

HR at baseline (bpm)

109.32 ± 16.17

112.04 ± 15.45

0.125

HR before GOR test (bpm)

122.70 ± 16.92

125.58 ± 15.65

0.118

HR before the 9G profile (bpm)

140.48 ± 18.41

145.18 ± 16.89

0.019

Maximal HR during the 9G profile (bpm)

1–5 s

169.07 ± 22.56

167.06 ± 21.54

0.414

6–10 s

175.81 ± 18.59

179.45 ± 22.02

0.314

11–15 s

179.61 ± 18.57

189.50 ± 16.78

0.289

HR increase ratio*

1–5 s

1.22 ± 0.20

1.16 ± 0.15

 < 0.001

6–10 s

1.27 ± 0.20

1.22 ± 0.16

0.193

11–15 s

1.30 ± 0.19

1.20 ± 0.09

0.212

HR increase; N (%)

≥ 20%

175 (40.89%)

28 (27.45%)

0.013

< 20%

253 (59.11%)

74 (72.55%)

 
  1. N number, HR heart rate, GOR gradual onset rate.
  2. *Maximal HR during the initial 1–5 s of the 9G profile divided by HR before the 9G profile.
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