Diffusing capacity and spirometry following a 60-minute dive to 4.5 meters.

Koehle MS, Hodges ANH, Lynn BM, Rachich MF, McKenzie DC. Diffusing capacity and spirometry following a 60-minute dive to 4.5 meters. Undersea Hyperb Med 2006; 33(2):109-118.The purpose of this study was to assess the contribution of SCUBA to the pulmonary effects of diving to 4.5 meters depth in healthy subjects using a randomized crossover control condition. Ten healthy divers performed two 60-minute ‘dives’ using SCUBA in a swimming pool. The non-immersed 1 ATA SCUBA control exposure took place at ambient pressure in the laboratory. Thirty minutes prior to, and 30 and 90 minutes post-exposure, FVC (forced vital capacity), FEV