Ankle and foot power in gait analysis: Implications for science, technology and clinical assessment

KE Zelik, EC Honert - Journal of Biomechanics, 2018 - Elsevier
In human gait analysis studies, the entire foot is typically modeled as a single rigid-body
segment; however, this neglects power generated/absorbed within the foot. Here we show …

A unified perspective on ankle push-off in human walking

KE Zelik, PG Adamczyk - Journal of Experimental Biology, 2016 - journals.biologists.com
Muscle–tendon units about the ankle joint generate a burst of positive power during the step-
to-step transition in human walking, termed ankle push-off, but there is no scientific …

Feasibility of a biomechanically-assistive garment to reduce low back loading during leaning and lifting

EP Lamers, AJ Yang, KE Zelik - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
Goal: The purpose of this study was: 1) to design and fabricate a biomechanically-assistive
garment which was sufficiently lightweight and low-profile to be worn underneath, or as …

Walking in minimalist shoes is effective for strengthening foot muscles

ST Ridge, MT Olsen, DA Bruening, K Jurgensmeier… - 2018 - scholarsarchive.byu.edu
Introduction: Weakness of foot muscles may contribute to a variety of loading-related
injuries. Supportive footwear may contribute to intrinsic foot muscle weakness by reducing …

Stiffness map** of lower leg muscles during passive dorsiflexion

G Le Sant, A Nordez, R Andrade, F Hug… - Journal of …, 2017 - Wiley Online Library
It is challenging to differentiate the mechanical properties of synergist muscles in vivo. Shear
wave elastography can be used to quantify the shear modulus (ie an index of stiffness) of a …

Adding stiffness to the foot modulates soleus force-velocity behaviour during human walking

KZ Takahashi, MT Gross, H Van Werkhoven… - Scientific reports, 2016 - nature.com
Previous studies of human locomotion indicate that foot and ankle structures can interact in
complex ways. The structure of the foot defines the input and output lever arms that …

The foot is more than a spring: human foot muscles perform work to adapt to the energetic requirements of locomotion

R Riddick, DJ Farris, LA Kelly - Journal of the Royal …, 2019 - royalsocietypublishing.org
The foot has been considered both as an elastic mechanism that increases the efficiency of
locomotion by recycling energy, as well as an energy sink that helps stabilize movement by …

Contributions of intrinsic and extrinsic foot muscles during functional standing postures

ST Ridge, KM Rowley, T Kurihara… - BioMed Research …, 2022 - Wiley Online Library
Purpose. Maintaining balance during static standing postures requires the coordination of
many neuromuscular mechanisms. The role of the intrinsic and extrinsic foot muscles in this …

Design, modeling, and demonstration of a new dual-mode back-assist exosuit with extension mechanism

EP Lamers, KE Zelik - Wearable technologies, 2021 - cambridge.org
Occupational exoskeletons and exosuits have been shown to reduce muscle demands and
fatigue for physical tasks relevant to a variety of industries (eg, logistics, construction …

The rise of the longitudinal arch when sitting, standing, and walking: Contributions of the windlass mechanism

F Sichting, F Ebrecht - PLoS One, 2021 - journals.plos.org
The original windlass mechanism describes a one-to-one coupling between metatarsal joint
dorsiflexion and medial longitudinal arch rise. The description assumes a sufficiently stiff …