<p>Long-term asymmetric training in golf may lead to skeletal adaptations which can influence swing performance. This study investigated the relationship between joint resting position, dynamic range of motion (ROM) of the hip and shoulder, and clubhead velocity in golfers. Furthermore, it examined the sex-based differences in these parameters. We assessed the hip and shoulder joint resting position via infrared cameras and modified range of motion (vertical distance from the distal end of each fist to the T4 vertebral level) via functional movement screen and a plastic ruler in 24 elite golfers (12 males and 12 females), also analyzing sex differences in these measures and swing performance. A Pearson product-moment correlation coefficient was performed to analyze the relationship between the joint resting position and the ROM for the shoulder and hip. In addition, A MANOVA was conducted to analyze sex differences in the joint resting position, joint mobility, and club head velocity. The relationship between hip joint range of motion and clubhead velocity differed between sex, with a positive correlation (<i>r</i> = 0.71; R² = 0.51) for males and a negative correlation (<i>r</i>=-0.58; R² = 0.34) for females. Furthermore, males had a smaller resting internal rotation position of the left shoulder compared to females (<i>p</i> = 0.04; η² = 0.18) and they had a greater resting internal rotation position of the left hip (<i>p</i> = 0.002; η² = 0.36). Skeletal adaptations in elite golfers are sex-specific, with male players showing a dependence on greater left hip mobility and female players requiring higher left hip stiffness to maximize clubhead velocity. These distinct findings necessitate sex-specific conditioning and screening protocols, ensuring tailored training strategies to optimize performance in elite golf athletes.</p>