Publications by authors named "J Hafer"
Background: Varus thrust is common in those with knee osteoarthritis. Varus thrust is traditionally identified with visual analysis or motion capture, methods that are either dichotomous or limited to the laboratory setting. Inertial measurement unit data has been found to correlate with motion capture measures of varus thrust in those with severe knee osteoarthritis, allowing for a quantitative and accessible way of measuring varus thrust.
View Article and Find Full Text PDFArticle Synopsis
- Muscle fatigue reduces muscle power and affects physical activity, which can hinder daily living for older adults.
- A study of 31 older adults tested how muscle coordination during walking varies with their susceptibility to fatigue, identifying changes in muscle activity before and after a 30-minute walk.
- Results showed a general decline in muscle coordination during walking, but this change was similar for both more and less fatigable individuals, indicating that fatigue affects muscle coordination uniformly across different levels of fatigability.
Objective: To compare dual task cost (DTC) during gait initiation (GI) between a population of patients with persistent concussion symptoms (PCS) and age-matched healthy participants.
Design: Cohort study.
Setting: University research center.
Background: Gait kinematics differ between settings and among young and older adults with and without knee osteoarthritis. Out-of-lab data has a variety of walking bout characteristics compared to controlled in-lab settings. The effect of walking bout duration on gait analysis results is unclear, and there is no standardized procedure for segmenting or selecting out-of-lab data for analysis.
View Article and Find Full Text PDF