2018 Volume 94 Issue 2 Pages 27-38
This study examined the effects of the time-length of intermittent insertions of a standing posture on the subjective fatigue and lower-leg swelling in continuous deskwork. The subjects were required to do a computer task for 120 min under the following conditions: 1) Two-times repetition of 10-min standing - 50-min sitting, 2) Two-times repetition of 40-min standing - 20- min sitting, 3) 120-min continuous sitting. Lower-leg swelling, subjective fatigue and task-performance were recorded. The results revealed that the condition with the insertions of 10-min standing showed lessening of swelling of the lower leg and reduction of the strain of the buttocks and the low back compared to the continuous sitting. In the condition with the insertion of 40-min standing, fatigue of the feet and swelling of the lower leg were prominent. Taking into account these results and the results of previous studies, the duration of 10 to 30 minutes is suggested as an appropriate time range for inserting a standing position in deskwork considering the short-term effects on the strain to low-back and the lower feet.
