Circulatory physiological change in scuba diving

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To obtain the basic data about changes of the circulatory physiological index of disabled, aged person on scuba-diving (diving), twelve sound, ten disabled, nine aged persons participated this research. After the portable Holter recorder was put on the body, electrocardiogram (ECG), blood pressure (BP), and oxygen saturation (SpO2) were recorded for approximately 24 hours containing normal daily activities, sleeping and two divings performed by wearing special dry suit for waterproofing. Each diving (20m/40 minutes) was performed by boat entry in the sea of several region in Japan.Comparing with healthy persons, there were no specific changes for disabled persons and aged persons during diving, but both HR, BP and SpO2 increased as the usual physiological variance.