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Table 2 Baseline characteristics

From: Rhodiola crenulata extract for prevention of acute mountain sickness: a randomized, double-blind, placebo-controlled, crossover trial

Treatment sequences

Characteristic

Rhodiola– placebo

Placebo – Rhodiola

P value

 

(N = 48)

(N = 54)

 

Male

23 (47.9)

27 (50.0)

0.83

Age, y

35.8 ± 10.0

36.3 ± 10.4

0.84

BMI, kg/m2

22.6 ± 2.9

23.4 ± 3.0

0.17

SpO2*, %

98.8 ± 0.9

98.9 ± 1.0

0.60

Heart rate, beats/min

72.5 ± 8.9

72.2 ± 9.6

0.89

Altitude of residence, m

151.7 ± 105.9

152.7 ± 105.9

0.94

History of mountaineering above 3000 m

  

0.18

 Never

23 (47.9)

36 (66.7)

 

 <10 mountains

20 (41.7)

16 (29.6)

 

 >10 mountains

5 (10.4)

2 (3.7)

 

History of AMS

7 (14.6)

5 (9.3)

0.54

  1. Continuous variables are presented as mean ± standard deviation, and categorical variables are presented as count (percentage).
  2. BMI, Body mass index.
  3. *SpO2, Oxygen saturation by pulse oximetry at an altitude of 250 m. Heart rate and other demographics were measured during the participant conference before randomization.
  4. AMS, Acute mountain sickness.