As a short person who has been fairly decent at free throws in the past but would probably be completely unable to make even an easy shot with someone trying to

As a short person who has been fairly decent at free throws in the past but would probably be completely unable to make even an easy shot with someone trying to block me, I always need to jump just to get enough force behind the ball to throw it in the right arc. Obviously I'm probably still shorter and definitely way less strong and and skilled than even the shorter NBA players, but I do wonder if jumping is more necessary for smaller people in general since it's less strenuous to generate the force from your legs compared to your arms.