Effects of Training upon Cervical Muscle Strength and Endurance and Upon Electromyographic Potentials
Abstract
A qualitative evaluation was made concerning the effectiveness of a progressive resistance training program upon increasing the endurance capabilities of the muscles in the neck region. In order to minimize the effects of psychological factors entering into the evaluation, a fatigue index was chosen which utilized the electromyographic (EMG) signal obtained from the contracting muscle.
Prior investigations have shown that it is possible to determine the degree of fatigue in a muscle by using frequency analysis of the electromyogram. More specifically, if the mean power frequency (MPF) of the Fourier power spectra is used as an index of the EMG frequency, a linear decay of the MPF is seen to occur over the course of time. In addition, the slope coefficient of the MPF-time curve has been shown to correlate well with the endurance time associated with the contraction.
In this study, the change in the MPF slope coefficient occurring over a 4 week period was measured for a training and nontraining group. The results obtained show that a statistically significant difference existed between the change in MPF slope coefficient for the training and nontraining groups and should reflect upon the increase in endurance capabilities achieved by the training group over the nontraining group. Due to the length and overall nature of the training program, it was concluded that an increase in motor control was primarily responsible for producing the endurance changes seen in this study.
Description
Program year: 1983-1984Digitized from print original stored in HDR
Subject
neck musclesendurance capability
progressive resistance training program
degree of fatigue
mean power frequency
motor control
Citation
Conner, James M. (1984). Effects of Training upon Cervical Muscle Strength and Endurance and Upon Electromyographic Potentials. University Undergraduate Fellows. Available electronically from https : / /hdl .handle .net /1969 .1 /CAPSTONE -ConnerJ _1984.