Stride time variability
A significant effect on stride time variability was found for age (p<0.001, partial ηThe older group had significantly higher stride time variability than the middle-aged and young groups (p<0.001 in both comparisons), but there was no difference in stride time variability between the middle-aged group and the young group (p = 0.441). The difference in stride time variability between the old and middle-aged groups was smaller in near-darkness than in usual lighting.Within-group comparisons of stride time variability in the three groups under the two lighting conditions is shown in 