Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors

Date Published: 03/04/2021, doi: 10.3791/62211-v

Brightwell, C. R., Graber, T. G., Brightwell, B. D., Borkowski, M., Noehren, B., Fry, C. S. In vivo Measurement of Knee Extensor Muscle Function in Mice. J. Vis. Exp. (169), e62211, doi:10.3791/62211 (2021).

SUMMARY

We are excited to share a new research video from the Neuromechanical Performance Research Lab at the University of Guelph. We are proud to be able to support Dr. Geoffrey Power and his team in this important work.

“Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors”

The team’s research presents a novel protocol to non-invasively measure the torque-angular velocity-power relationship in vivo in rat plantar flexors using transcutaneous muscle stimulation. The setup enables simple testing of isotonic muscle contractions on a force transducer/length controller system to better represent the constant-load nature of everyday movements.