![]() ![]() Modification of soft tissue vibrations in the leg by muscular activity. Task-specific recruitment of motor units for vibration damping. Medical and Biological Engineering and Computing 2007 45(5):447–57 Electro-mechanical stability of surface EMG sensors. Roy SH, De Luca G, Cheng M S, Johansson A, Gilmore LD, De Luca CJ. European Journal of Applied Physiology and Occupational Physiology 1999 80(4):276–84 Surface mechanomyogram reflects the changes in the mechanical properties of muscle at fatigue. Orizio C, Diemont B, Esposito F, Alfonsi E, Parrinello G, Moglia A, Veicsteinas A. Medical and Biological Engineering and Computing 1982 20(2), 159–66 Movement-induced potentials in surface electrodes. European Journal of Applied Physiology 1997 75(6):504–11 Analysis of the tonic vibration reflex: Influence of vibration variables on motor unit synchronization and fatigue. Journal of Electromyography and Kinesiology 1992, 2(1), 26–35 Analysis of surface EMG of human soleus muscle subjected to vibration. ![]() Enschede: Roessingh Research and Development, 1999 European Recommendations for Surface ElectroMyoGraphy, Results of SENIAM Project. ![]() Hermens HJ, Freriks B, Merletti R, Stegeman D, Blok J, Rau G, Disselhorst-Klug C, Hägg G. The origin of skin-stretch-caused motion artifact under electrodes. Journal of Physiology 1990 4231:14ĭe Talhouet H, Webster JG. TVR elicited during fatigue from maximal voluntary contractions in man. European Journal of Applied Physiology and Occupational Physiology 1999 79(4):306–11īongiovanni LG, Hagbarth KE. Influence of vibration on mechanical power and electromyogram activity in human arm flexor muscles. Clinical Physiology 1999 19(2):183–87īosco C, Cardinale M, Tsarpela O. Adaptive responses of human skeletal muscle to vibration exposure. Signals spectra also revealed sharp peaks corresponding to vibration frequency and its harmonics, in accordance with accelerometers data. In fact large artifacts are visible on EMGs and patellar electrodes recordings during vibration. Motion artifact related to the impressed vibration have been recognized and related to movement of the soft tissues. The computed muscle belly displacements showed a peculiar behavior reflecting the mechanical properties of the structures involved. The aim of this study is to highlight the movements of muscles, and the succeeding relevance of motion artifacts on electrodes, in subjects undergoing vibration treatments.ĮMGs from quadriceps of fifteen subjects were recorded during vibration at different frequencies (15–40 Hz) Triaxial accelerometers were placed onto quadriceps, as close as possible to muscle belly, to monitor motion. Also the only skin stretch, modifying the internal charge distribution, results in a variation of electrode potential. However, it is well known that during surface bio-potential recording, motion artifacts may arise from relative motion between electrodes and skin and between skin layers. surface Electromyography (EMG) is largely utilized to assess muscular response elicited by vibrations and Root Mean Square of the electromyography signals is often used as a concise quantitative index of muscle activity in general, EMG envelope or RMS is expected to increase during vibration. The rationale of this treatment is based on the neuromuscular system response elicited by vibration loads. Vibration treatment by oscillating platforms is more and more employed in the fields of exercise physiology and bone research. ![]()
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