SKED Physiology Study

This study will be a randomized controlled, non-blinded trial The setting of this study will be an area of level ground, outdoors at a state park. Study enrollment goal is 50 subjects. This was determined by review of statistics from similar studies, available funding and time frame allocated to complete the study. There is not planned interim analysis, and no criteria for ending the study early. Each participant will be packaged using a SKED© system with no assumed spinal injury. Each subject will be packaged with SKED© only; SKED©+OSS-II©; SKED©+Vacuum mattress; SKED©+foam padding. Each patient packaged within their respective systems as one unit will be subject to a 30 meter controlled drag over terrain chosen to mimic a standard dry backcountry extrication drag. Then carried back to the start by a 4 person carry team to simulate a carry out scenario. The same 30 meter ground area will be used for all systems. Built in safety during the drag includes a manually monitored electric winch system with load cells and two safety operators walking alongside the packaged patient. Target movement will be approximately 1.5-2 miles per hour.