Outcome measurement
The IMU sensors were applied at the middle of forehead and at the middle of the humerus on the right side. Before the application of SEMG, participants’ hair over the areas of sensor placement was removed and their skin was cleaned with alcohol. The SEMG sensors were attached to the participants’ bodies following the European recommendations for SEMG [At the beginning of each experimental condition, baseline data for all measures were collected. To collect the baseline of the IMUs and SEMG data, participants were instructed to sit on an adjusted chair while keeping their neck and trunk straight and arms at their sides for one minute. To collect the baseline for the HRV data, they sat comfortably on the chair using the backrest for 5 minutes. Finally, they were asked to rate the baseline discomfort with the VAS.During each 10-minute interval over the 40-minute writing task, linear acceleration measured by IMU, and muscle activity measured by SEMG were recorded at the beginning (2