Method and Apparatus for Applying Vibromyographic Technology to the Assessment of Muscle Force and Balance
Method and apparatus is disclosed which shows how vibromyographic recordings can be processed in order to extract muscle force information from muscle sound. Hardware signal processing combined with wavelet packet analysis techniques provide the ability to obtain recording which demonstrate a correlation to muscle force which exceeds 90%. Reproducibility of measures between days has been shown to exceed 95%. Specifically, a method and apparatus have been developed, which permit the non-invasive measurement of individual muscle forces as a function of time during real-world, closed-chain functional activities. Peak muscle force, time to peak force, and muscle force ratios may be computed from the resulting assessment, thereby permitting assessment of muscle status to assist in the training of muscles for either injury prevention, rehabilitation, or performance improvement.
EMG is the only portable technology which exists which provides an estimate of muscle activity, but as it is an electrical measure, it does not provide a measure of muscle force, but only muscle activity. Muscle dynamometers can be used to measure joint torque, and muscle forces may be extrapolated from the torque measurements, but such equipment is expensive, non-portable, and requires training to operate. The disclosed technology is inexpensive, portable, and sufficiently simple to operate that the patient or athlete could utilize the technology without technical support.
Binghamton University RB316