Heart Rate Responses to Autonomic Challenges in Obstructive Sleep Apnea
Figure 1
Cold pressor heart rate responses.
A: 37 OSA and 57 control subjects; B: 6 OSA and 20 control female subjects, and 31 OSA and 37 control male subjects. Ai, Bi: Raw heart rate during the complete sequence. Aii, Bii, Biii: Change in heart rate relative to baseline (group mean ± SE), with time-points of significant increase or decrease relative to baseline within-group, and time-points of between-group differences (RMANOVA, p<0.05). Shaded areas indicate challenge periods.