Measurements of preferred walking speed in subjects with central and peripheral vision loss

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
G P SoongBrian Brown

Abstract

Previous mobility studies have used Preferred Walking Speed (PWS) in order to determine the walking efficiency in terms of the Percent Preferred Walking Speed (PPWS) of visually impaired adults. PWS has been measured in previous studies using the sighted guide (SG) and non-sighted guide (NSG) techniques. This study compared the NSG, SG and string (ST) (subjects walked by holding on lightly to a cardboard tube attached to a piece of string) techniques of measuring PWS in visually impaired subjects. Forty visually impaired subjects with central and peripheral vision loss were recruited. PWS was measured using the NSG, SG and ST techniques. For each technique, PWS was determined by recording the time taken for a subject to walk an unobstructed, straight 20-m corridor. There were no significant differences in PWS using the SG, NSG and ST techniques. For assessing walking efficiency, either the SG, NSG or ST technique could be employed when measuring PWS in visually impaired subjects.

References

Jun 1, 1986·Ergonomics·D D Clark-CarterC I Howarth
May 1, 1982·American Journal of Optometry and Physiological Optics·J A Marron, I L Bailey
Oct 1, 1996·Optometry and Vision Science : Official Publication of the American Academy of Optometry·S HaymesA Johnston
Apr 21, 1998·Optometry and Vision Science : Official Publication of the American Academy of Optometry·T KuykP S Fuhr
Aug 14, 1998·Optometry and Vision Science : Official Publication of the American Academy of Optometry·D R GeruschatJ W Stahl
Jan 6, 1999·Optometry and Vision Science : Official Publication of the American Academy of Optometry·K A TuranoJ W Stahl
Oct 6, 2001·Optometry and Vision Science : Official Publication of the American Academy of Optometry·G P SoongB Brown
Dec 5, 2002·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Shirin E HassanRussell L Woods
Dec 11, 2002·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Grace P SoongBrian Brown

❮ Previous
Next ❯

Citations

Jun 3, 2016·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Robert P FingerSharon A Bentley
Jun 6, 2009·Journal of Aging and Health·Bernard A SteinmanAnna Q D Nguyen
Jan 3, 2008·ACM Transactions on Applied Perception·Lee LichtensteinEli Peli
Feb 28, 2007·Journal of Neural Engineering·M Velikay-ParelA Langmann
Sep 22, 2020·Translational Vision Science & Technology·Neruban KumaranGary S Rubin

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.