Research Article

Optimal Recognition of Volleyball Player’s Arm Movement Track Based on Embedded Microprocessor

Table 1

Three kinds of motion definition in joint kinematics.

Exercise methodDefinitionPerformance of joints in motion

ScrollMultiple points of one rotating joint surface are in contact with multiple points of another joint surfaceTyre movement on the road
SlideA single point of one joint surface is in contact with multiple points of another joint surfaceTires slip on smooth ice
SpinRotation of a single point on one joint surface with a single point on another joint surfaceThe ball turns a little on the ground