To simplify the extraction of the attention points of the golfers in the measurement of the swing.

A wear 10 is put on a golfer 19 when the golfer 19 swings a golf club 18 holding it and is photographed to capture the color moving images for analyzing the actions of the swing with a computer 22. Color marks M1-M7 which are recognized by extracting the color pixels that meet the given threshold pertaining to the color information with the computer 22 on the captured images are applied at the positions of the elbows, shoulders and waist of the wear while the colors of the color marks M1-M7 are made different from those of the background 26 and the fabric 11 of the wear.