2009
DOI: 10.1109/tbme.2009.2026733
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Determination of Sit-to-Stand Transfer Duration Using Bed and Floor Pressure Sequences

Abstract: The duration of a sit-to-stand (SiSt) transfer is a representative measure of a person's status of physical mobility. This paper measured the duration unobtrusively and automatically using a pressure sensor array under a bed mattress and a floor plate beside the bed. Pressure sequences were extracted from frames of sensor data measuring bed and floor pressure over time. The start time was determined by an algorithm based on the motion of the center of pressure (COP) on the mattress toward the front edge of the… Show more

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Cited by 76 publications
(55 citation statements)
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“…This latter finding supports our original hypothesis and offers promise that under mattress pressure sensors can play a role in monitoring changes that occur over time among frail older adults in the home context. The home context presents a number of differences from highly controlled laboratory situations where correlations have been found to be higher 11,12 . This study has identified some of these particularities which are important to recognize for the development of viable home monitoring systems.…”
Section: Discussionmentioning
confidence: 99%
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“…This latter finding supports our original hypothesis and offers promise that under mattress pressure sensors can play a role in monitoring changes that occur over time among frail older adults in the home context. The home context presents a number of differences from highly controlled laboratory situations where correlations have been found to be higher 11,12 . This study has identified some of these particularities which are important to recognize for the development of viable home monitoring systems.…”
Section: Discussionmentioning
confidence: 99%
“…One such tool for monitoring this phase of the STS transfer on a continual basis is under-mattress pressure technology. This type of technology is placed under a bed mattress and uses pressure change to calculate STS time [11][12][13] . We have previously shown that under-mattress pressure sensors can differentiate between healthy older adults and those with mobility impairments on the basis of STS time in the laboratory environment 11 .…”
Section: S I T -T O -S T a N D T I M I N Gmentioning
confidence: 99%
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“…After 15 s of usual sitting, the participants were asked to perform five STSTS movements, as fast as possible and with a full range of motion. The duration of this task, determined by the center of pressure displacement (Arcelus et al, 2009), was calculated (Simmonds, 1998).…”
Section: Primary Outcome Measuresmentioning
confidence: 99%
“…Although this method protects the resident's privacy, the wearing devices is an extra burden. The fourth monitoring technology is based on pressure sensors [7]. The pressure sensors are used to detect the presence of residents on chairs or in bed, sit-to-stand transfers and stand-to-sit transfers.…”
Section: Introductionmentioning
confidence: 99%