Figure 1.
Example of the power spectral density (PSD) distribution of the EMG signal recorded from the m.
soleus during either tendon vibration or whole-body vibration (25Hz, 1.5mm) before (unfiltered, dashed line) and after (filtered, black line) applying the ‘spectral smoothing’ procedure to attenuate vibration artefacts.
Figure 2.
Plantar-flexion force during vibration.
Changes in plantar-flexion force (mean ± SD) over 10 time-points (1-10) during Achilles tendon or whole-body vibration at 50Hz and 25Hz. L: loaded; PFF: plantar-flexion force; UL: unloaded shank; ATV: tendon vibration; WBV: whole-body vibration.
Figure 3.
EMG amplitude during vibration.
Normalised RMS EMG amplitude (mean ± SD) of the m.tibialis anterior and m. soleus during unloaded and loaded shank for each condition during whole-body vibration and tendon vibration. L: loaded; UL: unloaded; ATV: tendon vibration; WBV: whole-body vibration.
Figure 4.
Tri-axial accelerations and transmission.
Population mean (± SD) root-means-square accelerations registered along vertical, anterior-posterior, and medial-lateral axes at source and shank during unloaded and loaded shank conditions, and transmission ratios of vertical acceleration from the vibration source to the shank level. A-P: anterior-posterior; L: loaded; M-L: medio-lateral; ATV: tendon vibration; RMS: root mean square; UL: unloaded; V: vertical; WBV: whole-body vibration.