FIGURE 5.
Invasively measured diastolic blood pressure (Dia) during pool apnea. Diastolic blood pressure increased every minute from 76 ± 3 to a maximum of 113 ± 5 mm Hg after 3 min of apnea compared to rest and remained constant hereafter until termination of breath hold (*P < 0.001 compared to baseline, n = 9).