The swimmer below consistently achieves a peak hand force of 60 to 70 lbs on the push phase of his left hand. (The vertical gray lines on the hand force graphs are synchronized with the video image.)


The swimmer below has her left arm in an effective position as she prepares to finish the push phase. She will continue to generate substantial force for over .2 sec.


The following swimmer has her right arm in an effective position as she completes the freestyle push phase. She is still generating 10 lbs of force.


The swimmer below reaches his peak hand force of about 45 lbs near the end of the freestyle push phase.