G. S. Sawicki

Reduced Achilles tendon stiffness in aging persists at matched activations and associates with higher metabolic cost of walking

This study finds older adults have reduced Achilles tendon stiffness and higher metabolic cost of walking, linking lower stiffness to increased energy expenditure.

Attenuation of muscle spindle firing with artificially increased series compliance during stretch of relaxed muscle

This study investigates how increased tendon compliance affects muscle spindle firing during different stretch types and finds that firing rates are generally reduced but not fully explained by fascicle length and velocity.

Which lower-limb joints compensate for destabilising energy during walking in humans

The paper examines how lower-limb joints compensate for destabilizing energy during walking by analyzing mechanical work changes in response to treadmill perturbations.

Machine learning to extract muscle fascicle length changes from dynamic ultrasound images in real-time

This paper develops a machine learning framework to track muscle fascicle length changes in real-time using B-mode ultrasound, achieving reliable results comparable to standard post-processing methods.

Changes in Cellular Crosstalk between Skeletal Muscle Myoblasts and Bone Osteoblasts with Aging

This study investigates how aging affects biochemical interactions between bone and muscle cells using a rat model, finding that co-culture promotes differentiation but does not alter age-related changes in IGF-1 or collagen expression.

Relatively Shorter Muscle Lengths Increase the Metabolic Rate of Cyclic Force Production

This study shows that increasing ankle angle shortens soleus muscle fascicles and increases metabolic energy expenditure during cyclic contractions, independent of mechanical work or force rate.

Mechanics and energetics of walking and running up and downhill: A joint-level perspective to guide design of lower-limb exoskeletons

This study analyzes joint mechanics and energetics during walking and running on different inclines to inform the design of lower-limb exoskeletons.

Adding carbon fiber to shoe soles does not improve running economy: a muscle-level explanation

This study examines whether carbon fiber plates in shoe soles improve running economy by analyzing biomechanics and energy expenditure in athletes.

Ultrasound imaging links soleus muscle neuromechanics and energetics during human walking with elastic ankle exoskeletons

This study uses ultrasound imaging to show that exoskeleton stiffness affects soleus muscle dynamics and metabolic rate during walking, with optimal savings at 50 Nm rad-1.