A sensitivity analysis to evaluate the performance of temporal pressure - related parameters in detecting changes in supine postures.

•Interface pressures can be monitored over prolonged periods to establish spatial trends in the biomechanical interactions between individuals and their support surface.•Signals from pressure monitoring systems can be used as a surrogate for movements.•The relative position of the individual influences the sensitivity and specificity of these pressure signals to detect movement.•The combination of actimetry and pressure monitoring could provide a robust methodology to inform clinical practice regarding pressure ulcer prevention regimens.