Abstract
The aim of this study is to highlight the relation between muscle motion and electromyographyc activity during whole body vibration. This treatment is accounted for eliciting a reflex muscle activity in response to vibratory stimulation. Simultaneous recordings from quadriceps Rectus Femoris EMG and 3D muscle accelerations on fifteen subjects undergoing vibration treatments were collected. In our study vibrations were delivered via a sinusoidal oscillating platform at different frequencies (10-45 Hz), with a constant amplitude. Muscle motion was estimated by processing accelerometer data. Displacements revealed a mechanical resonant-like behaviour of the muscle; resonance frequencies and dumping factors depended on subject. Large EMG motion artifacts were removed using sharp notch filters centred at the vibration frequency and its superior harmonics. RMS values of artifact-free EMG were found correlated to the actual muscle displacement. The results were in accordance to the hypothesis of a proprioceptive response during vibration treatment. Nevertheless, motion artifacts produced an overestimation of muscle activity, therefore its removal was essential.
Original language | English |
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Title of host publication | IFMBE Proceedings |
Pages | 2069-2072 |
Number of pages | 4 |
Volume | 22 |
DOIs | |
Publication status | Published - 2008 |
Event | 4th European Conference of the International Federation for Medical and Biological Engineering, ECIFMBE 2008 - Antwerp, Belgium Duration: Nov 23 2008 → Nov 27 2008 |
Other
Other | 4th European Conference of the International Federation for Medical and Biological Engineering, ECIFMBE 2008 |
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Country | Belgium |
City | Antwerp |
Period | 11/23/08 → 11/27/08 |
Keywords
- Electromyography
- Motion artifact
- Muscle motion
- Whole body vibration
ASJC Scopus subject areas
- Biomedical Engineering
- Bioengineering