Perturbing the muscle work loop paradigm to unravel the neuromechanics of unsteady locomotion

S Sponberg, E Abbott… - Journal of Experimental …, 2023‏ - journals.biologists.com
Muscle function during movement is more than a simple, linear transformation of neural
activity into force. The classic work loop technique has pioneered our understanding of …

What is robotics? Why do we need it and how can we get it?

DE Koditschek - Annual Review of Control, Robotics, and …, 2021‏ - annualreviews.org
Robotics is an emerging synthetic science concerned with programming work. Robot
technologies are quickly advancing beyond the insights of the existing science. More secure …

The hawkmoth wingbeat is not at resonance

J Gau, ES Wold, J Lynch, N Gravish… - Biology …, 2022‏ - royalsocietypublishing.org
Flying insects have elastic materials within their exoskeletons that could reduce the
energetic cost of flight if their wingbeat frequency is matched to a mechanical resonance …

Residual force depression is not related to positive muscle fascicle work during submaximal voluntary dorsiflexion contractions in humans

BJ Raiteri, L Lauret, D Hahn - The Journal of Physiology, 2024‏ - Wiley Online Library
Residual force depression (rFD) following active muscle shortening is assumed to correlate
most strongly with muscle work, but this has not been tested during voluntary contractions in …

The importance of comparative physiology: mechanisms, diversity and adaptation in skeletal muscle physiology and mechanics

E Mendoza, DS Moen, NC Holt - Journal of Experimental …, 2023‏ - journals.biologists.com
Skeletal muscle powers animal movement, making it an important determinant of fitness.
The classic excitation–contraction coupling, sliding-filament and crossbridge theories are …

Understanding muscle function during perturbed in vivo locomotion using a muscle avatar approach

N Rice, CM Bemis, MA Daley… - Journal of …, 2023‏ - journals.biologists.com
The work loop technique has provided key insights into in vivo muscle work and power
during steady locomotion. However, for many animals and muscles, ex vivo experiments are …

Muscle as a tunable material: implications for achieving muscle-like function in robotic prosthetic devices

K Nishikawa, TG Huck - Journal of Experimental Biology, 2021‏ - journals.biologists.com
An ideal prosthesis should perform as well as or better than the missing limb it was designed
to replace. Although this ideal is currently unattainable, recent advances in design have …

Investigating in vivo force and work production of rat medial gastrocnemius at varying locomotor speeds using a muscle avatar

C Bemis, N Konow, MA Daley… - Journal of …, 2024‏ - journals.biologists.com
Traditional work loop studies, that use sinusoidal length trajectories with constant
frequencies, lack the complexities of in vivo muscle mechanics observed in modern studies …

[PDF][PDF] " Avatar", a Modified Ex vivo Work Loop Experiments Using In vivo Strain and Activation

C Bemis, K Nishikawa - Journal of Visualized Experiments, 2023‏ - par.nsf.gov
Movement behaviors are emergent features of dynamic systems that result from muscle
force production and work output. The interplay between neural and mechanical systems …

The force response of muscles to activation and length perturbations depends on length history

S Jeong, K Nishikawa - Journal of Experimental Biology, 2023‏ - journals.biologists.com
Recent studies have demonstrated that muscle force is not determined solely by activation
under dynamic conditions, and that length history has an important role in determining …