Keywords: میزان راحتی; Whole-body vibration (WBV); Exposure duration; Comfort level; Weighted acceleration; Vibration Dose Value (VDV); R.M.S; Root Mean Square; VDV; Vibration Dose Value (m/s1.75); eVDV; Estimated Vibration Dose Value (m/s1.75); WBV; Whole-Body Vibration;