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Table 1 Heart rate, peripheral oxygen saturation, and ratings of perceived exertion during the 2-mile time triala

From: Effects of carbohydrate supplementation on aerobic exercise performance during acute high altitude exposure and after 22 days of acclimatization and energy deficit

 

SL

Acute HA

Chronic HA

CHO

PLA

CHO

PLA

CHO

PLA

HR (bpm)2

181 ± 10

175 ± 9

159 ± 9

168 ± 14

166 ± 13

161 ± 18

SpO2 (%)2,3

93 ± 2

95 ± 3

71 ± 4

73 ± 4

77 ± 3

81 ± 4

RPE

17 (14–19)

17 (16–18)

16 (13–20)

18 (15–20)

18 (14–19)

19 (16–19)

  1. aValues presented as mean ± SD, except for RPE which is presented as median (range)
  2. 2Phase main effect; acute and chronic HA different than SL, P < 0.05
  3. 3Phase main effect; chronic HA different than acute HA, P < 0.05.
  4. SL Sea level, HA High altitude, HR Heart rate, CHO Carbohydrate, PLA Placebo, SpO2 Peripheral oxygen saturation, RPE Rating of Perceived Exertion