- Japan Ergonomics Society
- 人間工学 (ISSN:05494974)
- vol.3, no.2, pp.159-165_1, 1967-04-30 (Released:2010-03-16)
Toyota's original suggestion that the optimum height difference of desk and seat should be 1/3 of the individual sitting height was experimentally investiated. Performance scores of the figure tracing of 18 male and female students and thier fatigue complaints were studied at height differences of -6, -3, 0, ..3, -6 cm of 1/3 sitting height. In case the height difference was a little lower than 1/3 sitting height, the tracing performance was the best and the least fatigue complaints were made. Memomotion study by films demonstrated the natural wrist and elbow movements at 0 and -3 cm height. Electromyographic test confirmed the above results.The subjects preferred -3 cm for writing, 0 cm for reading. The optimum desk-seat difference was concluded to be revised as -1 to -2 cm of 1/3 of the sitting height.