Age (Dordr) 2016 Aug 3;38(4):363-375. Epub 2016 Aug 3.
Translational Gerontology Branch, Longitudinal Studies Section, National Institute on Aging, 251 Bayview Blvd., Suite 100, Rm 04B316, Baltimore, MD, 21224, USA.
A U-shaped relationship between cognitive demand and gait control may exist in dual-task situations, reflecting opposing effects of external focus of attention and attentional resource competition. The purpose of the study was twofold: to examine whether gait control, as evaluated from step-to-step variability, is related to cognitive task difficulty in a U-shaped manner and to determine whether age modifies this relationship. Young and older adults walked on a treadmill without attentional requirement and while performing a dichotic listening task under three attention conditions: non-forced (NF), forced-right (FR), and forced-left (FL). Read More