Fig. 8

A typical example of simultaneously measured respiration curves obtained from the bathtub method (a) and from the direct method using the chest-band (b) during bathing in a healthy subject. The records of three conditions during periods of rest (0~300 and 390~420 s), deep breath (300~360 s) and simulated drowning (360~390 s) are shown in this example. The lower two panels show an expanded record in time from 100 to 150 s from the corresponding upper two records