 In other cases, it is conjectured that the padding of the heel softens the impact and resulting in runner modifying their gait to contact further back in the foot.
<fluency>  In other cases, it is conjectured that the padding of the heel softens the impact and resulting in runner modifying their gait to contact further back in the foot.
 In other cases, it is conjectured that the padding of the heel softens the impact and results in runners modifying their gait to contact further back in the foot.