期刊
APPLIED ERGONOMICS
卷 76, 期 -, 页码 20-31出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2018.11.006
关键词
Balance recovery; Kinetics; Handrail design
资金
- Canadian Institutes of Health Research Operating Grant (CIHR) [MOP 142178]
- Ontario Research Excellence Fund [ORF-RE4-023]
- AGE-WELL Network of Centres of Excellence Graduate and Postdoctoral Awards in Technology and Aging
- Toronto Rehabilitation Institute Graduate Student Scholarships
- Unilever/Lipton Graduate Fellowships in Neurosciences Research
- Ontario Graduate Scholarships in Science and Technology
- University of Toronto's Institute of Biomaterials and Biomedical Engineering Director's Summer Research Award
- MITACS through the MITACS Accelerate Program
Well-designed handrails significantly enhance balance recovery, by allowing users to apply high forces to the rail and stabilize their center of mass. However, data on user-applied handrail forces during balance recovery are limited. We characterized the peak forces that 50 young adults applied to a handrail during forward and backward falling motions; quantified effects of handrail height (34, 38, 42 inches) and position prior to balance loss (standing beside the rail with or without hand contact, or facing the handrail with two-handed contact); and examined the relationship between handrail forces and individual mass. The testing environment consisted of a robotic platform that translated rapidly to destabilize participants, and a height-adjustable handrail that was mounted to the platform. Our findings support our hypotheses that starting position and handrail height significantly affect peak handrail forces in most axes. The highest handrail forces were applied when participants faced the handrail and grasped with two hands. In these cases, increased handrail height was associated with increased anterior forces and decreased downward, upward and resultant forces. As hypothesized, peak handrail forces correlated strongly with individual weight in most axes. Implications of these findings for handrail design are discussed.
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