Age-related differences in sway parameters across the four conditions were evident using the Swaymeter.
Moderate-to-good correlations were found between Swaymeter and forceplate sway measures across conditions (r
= 0.560-0.865). Good agreement between the Swaymeter and forceplate were found for anteroposterior and
mediolateral sway displacement measures (average offset = 6 mm). Sway path length measures were longer for
the forceplate compared to the Swaymeter (average offset = 376 mm), but these data showed good agreement
following log-transformation. The Swaymeter was reliable across trials, with intraclass correlation coefficients
ranging from 0.654 to 0.944.