Exercise is intrinsic to military and commercial diving, and exercise may either increase or decrease the risk of decompression sickness (DCS) after diving. Vann and Thalmann (1) explained the relation between exercise, diving, and the risk of DCS using the parameters of: exercise intensity, exercise duration and the phase of diving during which exercise is performed. Before diving, intense, vigorous or ballistic exercise which induces muscular soreness may also create ...