Congratulations and thanks to Aubrey Gray and Prof. Jason Franz of the UNC Applied Biomechanics Lab for working with Prof. Adamczyk to publish a paper on Dynamic Mean Ankle Moment Arm in the journal Gait and Posture. The paper evaluates DMAMA as a measure of whole-stride ankle behavior in walking, for young and older age groups and across a range of externally-applied forces, from resisting to assisting.
Results found that:
- DMAMA increased with faster walking speed in both age groups, across a range of moderate speeds.
- DMAMA decreased with increasing demand for net propulsion in both age groups.
- DMAMA did not appear to differ across the age groups.
The results support generalizable use of DMAMA as a metric across age groups, and contribute to a growing understanding of how ankle control contributes to a variety of locomotion conditions.
The full citation is:
Gray, A.J., Adamczyk, P.G., Franz, J.R., 2025. The effects of age and task demand on dynamic mean ankle moment arm during walking. Gait & Posture 117, 54–57. https://doi.org/10.1016/j.gaitpost.2024.12.010
There is free access until Feb 1, 2025 with this link.