Which lower body joints show significant movement during swimming?

Which lower body joints show significant movement during swimming?

جسم کے کون سے نچلے حصے تیراکی کے دوران نمایاں حرکت کا مظاہرہ کرتے ہیں؟
Explanation

During swimming, knees and ankles play a key role in kicking movements.

These joints allow flexion and extension, providing thrust in the water.