Figure 2
From: Children’s coordination of the “sweet spot” when striking a forehand is shaped by the equipment used
Shoulder-racket distance control contribution of the upper arm (UPP), forearm (FORE), and hand-racket (RCK) segment for full-sized (A) and scaled (B) equipment, and the second order polynomial fit of correlation values, between the segments’ variance at ball impact across score values for full-sized (C) and scaled (D) equipment. FR is forearm; UP is upper arm; and RK is racket.
