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. 2017 Dec 18;596(15):3327–3339. doi: 10.1113/JP274872

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© 2017 The Authors. The Journal of Physiology © 2017 The Physiological Society

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Mean ± SEM values over 1 min windows in normoxia (N,), acute hypoxia (AH, ■) and chronic hypoxia (CH,▼). All values are expressed as a percentage of baseline. Open symbols represent data points significantly higher than baseline values. A, cerebral TOI. B, tHb. C, O₂Hb. D, HHb. During the second half of the protocol, TOI was higher in all conditions, whereas O₂Hb was higher only in AH. For HHb, data were pooled across sessions (no main effect of session, nor a session × time interaction) and post hoc testing on the main effect of time revealed a decrease from the 6th min onward (^§ P < 0.05).

Inline graphic — Mean ± SEM values over 1 min windows in normoxia (N,), acute hypoxia (AH, ■) and chronic hypoxia (CH,▼). All values are expressed as a percentage of baseline. Open symbols represent data points significantly higher than baseline values. A, cerebral TOI. B, tHb. C, O₂Hb. D, HHb. During the second half of the protocol, TOI was higher in all conditions, whereas O₂Hb was higher only in AH. For HHb, data were pooled across sessions (no main effect of session, nor a session × time interaction) and post hoc testing on the main effect of time revealed a decrease from the 6th min onward (^§ P < 0.05).