EMG spectral peaks recorded during vibration exercise


Xu, L., Rabotti, C. & Mischi, M. (2015). EMG spectral peaks recorded during vibration exercise. Book of Abstracts of the 5th Dutch Conference on Bio-Medical Engineering (BME 2015), 22-23 January 2015, Egmond aan Zee, The Netherlands Institute of Electrical and Electronics Engineers (IEEE).



Resistance training (RT) is a widely accepted training option for improving neuromuscular performance. However, the high levels of load required in RT limit its applicability in rehabilitation programs. Vibration exercise (VE) is a relatively new and promising training modality, providing several important advantages over conventional strength training. To investigate the underlying mechanism elicited by VE, surface electromyography (EMG) has been widely used to measure the level of neuromuscular activity during VE. However, the EMG spectrum recorded during VE shows sharp peaks at the vibration frequency, whose interpretation (motion artifacts or muscle activity) remains controversial. The aim of the present study is to clarify the nature of the spectral peaks observed during VE. To this end, the conduction velocity of the vibration frequency component (CVVF) was estimated and compared with the CV of the entire EMG (CVEMG) and the acceleration signal (CVACC).