This is the 13448th most frequent Korean word.
뜀뛰기하는
"Jumping" or "leaping."
Here, '뜀뛰기하는' modifies '모습' to refer to the appearance of someone who is jogging.
뜀뛰기하는 모습이 건강하고 활발해 보입니다.
The act of jogging appears healthy and active.
The word '뜀뛰기하는' is used here as an adjective to describe the habitual activity related to exercising in the form of running or jogging.
그는 매일 아침 공원에서 뜀뛰기하는 습관을 가지고 있습니다.
He has the habit of jogging in the park every morning.
In this sentence, '뜀뛰기하는' describes the children currently engaged in the act of jogging.