This is probably because of the form. On dumbbell, you probably think you have good form, but you are most likely slightly changing it to make it easier. The machine guides your form, forcing your form to follow.
do a lower weight
통증이 있는지가 제일 중요한것같아용
me too
유연성 따라 다르긴 해요. 보통은 손이 귀 옆~그거보다 살짝 위?