A study of the relationship between electromyographic activity of muscles of the thigh and total force developed by cycling subjects.
Martin, John Anthony
Neil, Douglas E.
Poock, Gary K.
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The objective of this thesis was to determine the nature of the relationship between force developed by the human leg and the electromyographic activity (EMG) developed in selected muscles of the lower limb. Subjects were required to pedal a bicycle ergometer (ergocycle) while simultaneous dynagraph recordings were made of the EMG of the thigh muscles of the right leg and the calibrated output of strain gages mounted on the right ergocycle pedal. Data from the recordings were analyzed using the BIMED02R computer program developed by the Health Sciences Computing Facility at U.C.L.A., to determine the correlation between EMG and force output, and to determine the interrelationships of all variables by means of stepwise linear regression was performed by the computer program. Transgeneration of variables (EMG) performed in an attempt to examine the possibility of achieving a linear relationship. Results of this experiment are an initial effort to explore the possibility of developing a reliable, reproducible model with which to accurately describe the complicated interrelationships which exist during the operation of the human leg. Future efforts of this type should be undertaken to provide a sound basis for advancing the field of powered prosthetic equipment for disabled persons.
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