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Investigation of Underlying Mechanisms for the Modulation of Multi-dimensional Ankle Stiffness

Characterization of multivariable ankle stiffness is important for better understanding how the ankle supports lower-extremity functions. The purpose of this research project is to further investigate the underlying mechanisms for the modulation of multi-dimensional ankle stiffness; specifically, the relationship between ankle stiffness and the independent variables: ankle center of pressure and ankle modulating muscle activation.

Sex Differences in Voluntary Control Dynamics of the Knee and Ankle

Ever since Title IX in 1972, females have been known to have an increasingly higher rate of musculoskeletal injuries occurring while playing sports than in males. This study focuses on quantifying the voluntary neuromuscular control of the knee for each gender during a range of set frequencies. If dynamic knee stability and motor control is

Evaluating the Effects of a Negatively-Damped Ankle-Foot Orthosis on Gait

The purpose of this research is to investigate the viability of negative damping as a control scheme for a wearable ankle exoskeleton. Negative damping can be thought of as the opposite of friction – it adds energy to a system instead of removing it. The muscle activity and gait motion of subjects wearing an externally-powered

Implementation of Self Adjustable Treadmill

Can you walk on a treadmill as comfortably as you would over ground? While this seems challenging, the implementation of a self-paced mode in the instrumented treadmill enables the treadmill to adjust itself to the speed of the subject rather than the subject adjusting to a fixed speed thereby improving the comfort level. A study

Stability of Ankle Motion in Eversion and Inversion Motion

This research project investigates the stability of the ankle in inversion and eversion using variable negative damping coefficients: -0.3, 0, 0.3. The angle of motion is tested by making a comparison between 5 and 7 degrees angles of motion. Currently the researcher is focusing on creating graphs and build a reasoning interpretation of the experimental

The Response of the Human Ankle to Variable Negative Damping

The development of wearable robots has the potential to drastically improve human lives. This study focuses on using a wearable ankle robot to quantify lower-limb motor control. After creating a video game for human subjects to play, kinematic data and electromyographic (EMG) data was collected from ten healthy subjects. This study continues previous research on