Table 3.

Calculated cardiovagal baroreflex sensitivity (slopes), threshold, saturation, and response range using the modified Oxford method.

Calculated logistic parameters	Supine	HUT
Slope (sensitivity, max gain, bpm/mmHg)	−2.7 ± 0.7	−3.4 ± 1.0
SBP at maximum gain (mmHg)	119 ± 5	127 ± 3†
HR at maximum gain (bpm)	73 ± 6	87 ± 5†
Threshold (bpm)	55 ± 3	66 ± 7†
Saturation (bpm)	91 ± 5	106 ± 6†
Response range (bpm)	36 ± 5	44 ± 7

Values are mean ± SD. bpm, Beats per minute; HUT, head up tilt; SBP, systolic blood pressure; ^†P < 0.05 compared to the supine.