What direction is indicated for right trunk rotation around the Y axis?

The direction indicated for right trunk rotation around the Y axis is classified as negative. In the context of biomechanics and movement analysis, the Y axis typically represents vertical orientation, and angular rotations about this axis can be defined using a coordinate system commonly found in sports science and anatomy.

When discussing trunk rotations, a right trunk rotation is considered a clockwise movement when viewed from above. In a standardized right-hand coordinate system, clockwise rotations are conventionally assigned a negative angular value. Conversely, counterclockwise movements would be deemed positive.

Understanding this directional terminology is crucial for analyzing and describing rotational movements accurately. It allows professionals in clinical biomechanics to communicate effectively about motion, plan interventions, and assess conditions related to posture and movement dysfunction.