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(a) Mean ± SEM of the low pass filtered acceleration on foot shaker (FTSH), tibialis anterior (TA), rectus femoris (RF), brachialis (BC) and shoulder shaker (SHSH). (b) Transmissibility, and (c) Coherence computed using the cross spectral density method from the mean acceleration of all participants in the direction of vibration (refer Fig. 1(b) for the coordinate axes of the accelerometers) at simultaneous excitation frequencies of 15 Hz on shoulders and 25 Hz on feet.
