Use of power tilt systems in everyday life

Sonenblum, Sharon Eve; Sprigle, Stephen; Maurer, Christine L.

doi:10.1080/17483100802542744

Cited by 31 publications

(33 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Measurements of wheelchair occupancy and transfers were consistent with prior work investigating wheelchair use for individuals who use a manual wheelchair [31][32][33]. The low frequency of complete off-loading, or PRs, has been indicated in previous studies [33,35].…”

Section: Discussionsupporting

confidence: 70%

“…Despite the limited PRs, WSs were performed closer to twice per hour for many subject days. This behavioral characteristic is very consistent with the reported activities of participants using their powered wheelchairs' tilt-in-space feature, whereby small tilts were performed two to three times per hour, but large tilts were rarely performed [30,32]. In previous work, we demonstrated that intermediate leans, which reduced pressure between 29 and 46 percent, resulted in increased blood flow on the order of 100 to 300 percent [17].…”

Section: Ws Frequencysupporting

confidence: 72%

“…As expected, larger movements are typically done with a lower frequency than smaller movements. At this time, studies of the sitting behavior of wheelchair users have been limited to measurement of occupancy [29][30][31][32][33] or complete off-loadings [33][34][35] and a single pilot study that considered smaller movements but was never expanded to a full study [36].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Everyday sitting behavior of full-time wheelchair users

Sonenblum

Sprigle

Martin³

2016

J Rehabil Res Dev

View full text Add to dashboard Cite

Abstract-The objective of this study was to describe the inseat movement and weight-shifting behavior of full-time wheelchair users. We measured everyday sitting behavior for 192 d across 28 individuals who used manual wheelchairs as their primary mobility device. To obtain the measurements, we used eight thin force sensors placed under participants' wheelchair cushions. On a typical day, participants spent an average of 10.6 +/ 3.0 h in their wheelchair and transferred out of the wheelchair 8.4 +/ 4.3 times. Participants only performed pressure reliefs (90% off-loading of the entire buttocks for at least 15 s) 0.4 +/ 0.5 times per hour they were seated in the chair, but they performed weight shifts (WSs) (30%-90% off-loading of at least one side of the buttocks for 15 s) with a frequency of 2.4 +/ 2.2 times per hour. Despite the higher frequency of WSs, they were not performed in a routine manner. Half of the days studied included one segment of upright sitting lasting at least 2 h without a WS. Given these observations, we conclude that seating evaluations should emphasize positioning individuals in a way that facilitates reaching, leaning, and transferring in a safe manner, not only to improve function but also to affect buttocks loading.

show abstract

Section: Discussionsupporting

confidence: 70%

Section: Ws Frequencysupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Everyday sitting behavior of full-time wheelchair users

Sonenblum

Sprigle

Martin³

2016

J Rehabil Res Dev

View full text Add to dashboard Cite

show abstract

“…This threshold has been suggested elsewhere in the literature. 4,18 However, at larger angles of tilt, our results indicate a more substantive benefit than previously reported. 10,11,19 Several reasons may exist for these differences.…”

Section: Discussioncontrasting

confidence: 57%

Measuring the effect of incremental angles of wheelchair tilt on interface pressure among individuals with spinal cord injury

2011

View full text Add to dashboard Cite

Study design: This study was a repeated measures study. Objectives: The objective was to systematically measure the relative reduction in interface pressure (IP) at the ischial tuberosities (IT) and sacrum through 101 increments of tilt in a manual wheelchair among individuals with motor complete spinal cord injury (SCI). Setting: This study was carried out in Manitoba, Canada. Methods: A total of 18 adults with ASIA A or B level of injury were recruited through an out-patient SCI clinic. Using a standardized protocol, participants were tilted in 101 increments between 01 and 501, and IP readings were obtained at the IT and sacrum using pressure mapping technology. Relative pressure reduction from baseline was calculated and compared between tilt angles. Results: Tilt angle had a highly significant effect on pressure reduction at the IT (P ¼ 0.000) and the cosine relationship between these variables was expressed as quadratic. Reduction in sacral pressure did not occur until 301 tilt, with increased loading at smaller tilt angles. Pressure reduction at the IT and sacrum was not significantly different for tetraplegic and paraplegic participants. Conclusion: Small tilt angles are more suitable for postural control than pressure management. A minimum tilt of 301 is required to initiate unloading the sacrum and to achieve a clinically important reduction in pressure at the IT. Larger tilt angles resulted in more substantial pressure reduction than previously reported. Tilt-in-space appears to have similar benefits for individuals with paraplegia and tetraplegia.

show abstract

“…Data logger results were also compared with participant self-reports, but there was no statistical correlation between the measured observations and personal expectations [17]. In another study, surveyed participants self-reported the usage of large angles that were not reflected in logged recordings [18]. These findings suggest the possibility that users may have misconceptions about their own usage of wheelchair tilt.…”

Section: Introductionmentioning

confidence: 99%

Development of a Scalable Monitoring System for Wheelchair Tilt-in-Space Usage

Hutchinso¹

2013

nt J Phys Med Rehabil

View full text Add to dashboard Cite

Use of power tilt systems in everyday life

Cited by 31 publications

References 10 publications

Everyday sitting behavior of full-time wheelchair users

Everyday sitting behavior of full-time wheelchair users

Measuring the effect of incremental angles of wheelchair tilt on interface pressure among individuals with spinal cord injury

Development of a Scalable Monitoring System for Wheelchair Tilt-in-Space Usage

Contact Info

Product

Resources

About