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Table 1 SpO2, HR and RespR recorded at SL, 3000 m and 4000 m

From: Effects of acute hypoxia on heart rate variability, sample entropy and cardiorespiratory phase synchronization

 

SL

3000 m

4000 m

SpO2 (%)

97 ± 1

90 ± 3

84 ± 4 §

HR (1/min)

72 ± 5

77 ± 5

84 ± 5 ‡

RespR (1/min)

22 ± 2

23 ± 2

24 ± 2 †

  1. § Significantly lower compared with the value at SL and 3000 m (both P < 0.001).
  2. ‡ Significantly increase compared with the value at SL (P < 0.001) and 3000 m (P = 0.002).
  3. † Significantly change compared to the value at SL (P = 0.012), but there was no significant change between SL and 3000 m (P = 0.169), neither between 3000 m and 4000 m (P = 0.217).
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