TY - JOUR PY - 1989// TI - The effect of clothing on "diving bradycardia" in man during submersion in cold water JO - European journal of applied physiology and occupational physiology A1 - Tipton, Michael J. SP - 360 EP - 364 VL - 59 IS - 5 N2 - Eighteen healthy male volunteers undertook three seated submersions into stirred water at 5 degrees C. Whilst submerged, the subjects attempted to hold their breath for 20 s. They wore a different clothing assembly for each submersion, viz: a cotton overall assembly, a "wet suit" assembly and a "dry suit" assembly. During the experiments the breath-hold time, heart rate, skin and rectal temperatures of the subjects were recorded. The results showed that significantly (P less than 0.05) more subjects developed a diving bradycardia--defined as five or more consecutive R-R intervals of over 1.2 s--when wearing the dry suit. It is concluded that increasing the cold stress experienced by individuals during cold-water submersion decreases the incidence of diving bradycardia but not the magnitude of the bradycardia when it occurs.

Language: en

LA - en SN - 0301-5548 UR - http://dx.doi.org/ ID - ref1 ER -