Martial arts training requires garments capable of accommodating large-amplitude, multi-planar movements, yet quantitative evaluation of garment structural effects remains limited in textile engineering research. This study proposes a biomechanics-informed design and evaluation approach for functional martial arts training clothing and reports a pilot experimental assessment. A functional garment incorporating targeted panel segmentation, directional elasticity, and localized structural features was developed based on movement demand analysis. Sixteen experienced practitioners performed representative training tasks under functional and conventional clothing conditions. Lower-limb joint range of motion (ROM) was quantified using three-dimensional inertial motion capture. The results revealed movement- and plane-specific differences in joint ROM between clothing conditions, indicating that garment structural design can influence clothing-movement interaction and joint kinematic responses in high-mobility training applications.

functional clothing design, biomechanics-informed design, joint range of motion, inertial motion capture