Intermittent pressure relief has been recommended as a means to lower the risk of pressure ulcer (PU) development [1]. Continuous pressure over skin surface is one of the most significant factors, and in most cases the only requisite factor, that may result PUs. Thus, using an active seat cushion (i.e., a cushion that cyclically changes the area of exposure to pressure) seems like a logical strategy to lower the risk of PU formation in the chair-bound population.

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