Related Experiment Video
Updated: Aug 6, 2026
08:55
Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion
Published on: February 5, 2020
Physical function and wheelchair-operating ability among caregivers aged 75 years and older: a controlled
Misono Sakai1, Taisei Yamamoto1, Satoshi Sugimoto1
1School of Health Science, Tokyo International University, Saitama, Japan.
Disability and Rehabilitation. Assistive Technology
|July 16, 2026
Summary
Older adults aged 75+ struggle with manual wheelchair operation over barriers due to age-related declines. Physical function, particularly grip strength and locomotive syndrome stage, impacts wheelchair performance and safety.
Area of Science:
- Gerontology and Rehabilitation Engineering
- Biomechanics and Human Factors
Background:
- Manual wheelchair use is crucial for mobility in aging populations.
- Environmental barriers pose significant challenges for older adults operating wheelchairs.
Purpose of the Study:
- To evaluate the manual wheelchair operating ability of older adults (≥75 years) across environmental barriers.
- To examine the association between physical function and wheelchair operating performance in older adults.
Main Methods:
- Fifty-six women (36 older adults ≥75 years, 20 younger adults) participated.
- Physical function assessed via grip strength, mobility, balance, and locomotive syndrome (LS) stage.
- Wheelchair performance evaluated on level and uneven terrains, including slope ascent, side-slope navigation, front-caster lifting, and wheel-recovery tasks with a 60-kg dummy.
Main Results:
- Older adults demonstrated poorer physical function and wheelchair performance compared to younger adults.
- 22.2% of older adults could not overcome a 10-cm step.
- Higher LS stage and weaker grip strength were independently associated with poorer performance in slope ascent and side-slope navigation.
Conclusions:
- Age-related declines in mobility and upper-limb strength may compromise wheelchair safety.
- Targeted interventions, assistive technologies, and ergonomic designs are needed to enhance safety and mobility.
- Barrier-free environments are essential for community participation among older adults.
