Modulation of gait during visual adaptation to dark

Journal of Motor Behavior
R Moe-NilssenHerald A Nygaard

Abstract

The authors investigated the modulation of gait during dark adaptation. Twenty-five women (mean age = 72 years, SD = 5 years) walked back and forth on an arbitrarily uneven walkway during normal lighting at speeds ranging from slow to fast. Participants then performed 20 trials at preferred speed after sudden reduction of lighting; the authors compared those trials with point estimates at equivalent speeds representing normal lighting. The authors estimated speed, cadence, mediolateral trunk acceleration, and mediolateral interstep trunk-acceleration variability for each trial. Participants compensated for sudden reduction of lighting by reducing their walking speed. Compared with performance at equivalent speeds during normal lighting, cadence, trunk acceleration, and interstep trunk-acceleration variability initially increased. All variables showed an asymptotic approximation toward normal values during 60-90 s of walking in subdued lighting. The authors suggest that the sudden transition from normal to marginal lighting, rather than marginal lighting itself, may challenge locomotor control.

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Citations

May 31, 2012·TheScientificWorldJournal·Marco IosaStefano Paolucci
Aug 31, 2010·Gait & Posture·Ann HallemansPeter Aerts
Jun 3, 2009·Gait & Posture·Jorunn L HelbostadOlav Sletvold
Apr 26, 2016·Clinical Biomechanics·Elif AydınÖmer Faruk Şendur
Jun 19, 2017·Gait & Posture·Vennila KrishnanOlfat Mohamed
Jun 1, 2014·Optometry and Vision Science : Official Publication of the American Academy of Optometry·M Scott AlexanderDaniel S Marigold
Mar 5, 2019·Laryngoscope Investigative Otolaryngology·Muyinat Y OsobaAnil K Lalwani
Jun 8, 2018·Journal of the Royal Society, Interface·Sjoerd M Bruijn, Jaap H van Dieën
Aug 16, 2021·The Journal of Biological Chemistry·Dan ZhangIlyas Washington

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