Selection of Convenient Locations for the Placement of Push- and Rotary-Type Controls

  • Wataru ToyodaEmail author
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 824)


The purpose of this study was to describe the most convenient areas for operating push- and rotary-type controls that are commonly used in various electric appliances. The participants were ten males (Mean age = 21.7 years, SD = 0.5 years) with no history of trauma and no medical history of abnormal motor function. The push- and rotary-type controls were set on the intersections of a specified grid with six conditions in the anterior direction (40%, 60%, 80%, 100%, 120%, and 140%) and nine conditions in the left–right directions (−75%, −50%, −25%, 0% [median sagittal plane], 25%, 50%, 75%, 100%, and 125%) based on the ratio of the maximum reaching distances of the participants. The participants pushed and rotated the controls to adjust the height of a red bar to a white target line displayed on a monitor. The participants reported the subjective ease of operation of the controls as follows: push control from 0% to 25% in the left–right direction from 60% to 80% in the anterior direction, rotary control of 25% in the left–right direction, and 80% in the anterior direction, regardless of whether they used the dominant or the non-dominant limbs. Our results indicate that the most convenient locations for the push- and rotary-type controls could be calculated by the maximum reach distance of the upper limbs using the above ratios.


Working area Convenient range Controls 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Seikei UniversityMusashinoJapan

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