Step time variability

1. male sex increases step time variability in humans (68.6±89.4% vs 26.6±59.5%).

   “Males exhibited a greater step time CV during dual-task gait (F = 5.23, p=.009, males: 68.6±89.4%; females: 26.6±59.5%)”

   Humansduring dual-task gait, controlling for age and heightmales

   Older males exhibit greater dual-task gait variability and postural amplitude than older females

   GSA 2025 abstract·31 Dec 2025

1. Step time variability is associated with prefrontal activity in humans (β = 0.38, p < 0.01).

   “For PD there was a significant positive relationship between step time variability and prefrontal activity (β = 0.38, T = 6.26, p < 0.01)”

   HumansParkinson's diseasen = 37

   Exploring gait automaticity and prefrontal brain activity during single and dual-task walking in aging and Parkinson's disease

   Journal of neuroengineering and rehabilitation·5 Jan 2026

More on Prefrontal activity