A motion of a certain part of the human body may be thought to cause deformation of surface of other part of the body as well as the part where the motion is being made.
　In this paper, the influence of actions of the upper limb, the lower limb and the trunk on deformation of the body surface was studied. The influence was analyzed as a change of curvature of the surface of six measure-points and the change was measured by methods of slit projecting and three-dimensional VTR analyzing. The results obtained are as follows.
　1) The change of curvature of the surface of each measure-point caused by the motion of the upper limb was found greater along the diagonal direction of Regio infraclavicularis, the vertical direction of Regio scapularis, the vertical direction of Regio mammalis and the direction all around at Regio epigastrica.
　2) Curvature of the surface of Regio umbilicalis was caused to change great by the motion of the low limb.
　3) Curvature of the surface of Regio epigastrica and Regio umbilicalis was caused to change greatly by the motion of trunk.

DESCENTE SPORTS SCIENCE Vol.7/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE