Cardiovagal function tests in a healthy patient

Cardiovagal function tests, deep breathing and Valsalva maneuver, performed in an age- and sex-matched healthy person. Of note, the patient with diabetes in figures A and B lacks a heart rate response and has a less well-developed blood pressure profile. Green indicates heart rate; pink, mean blood pressure; blue, respiration to monitor effort; yellow, expiratory effort during Valsalva maneuver.