PURPOSE:To assess the effect of adding a dolphin kick to a breaststroke pullout.
METHODS:Eleven (20.9±2.3 yrs, 1.86±0.05 m, 79.6±5.5 kg) swimmers experienced with performing traditional and dolphin kick breaststroke pullouts participated in the study. Underwater video analysis was used to track whole body center of mass kinematics during a pullout. Time for the center of mass to travel distances ranging from 2.5-4 m from the initiation of the pullout were computed. Hand force data were derived from differential pressure measurements during the pulling phase of the pullout.
RESULTS:Use of a dolphin kick in a breaststroke pullout significantly (p=0.016) improved performance. Time for the center of mass to travel 4m after the initiation of the pull was reduced by 0.19 s. This performance improvement was not attributable to enhanced force production from the pull. Hand force was not significantly different between pullout techniques for the right hand (p=0.142) nor left hand (p=0.303). Total impulse produced by the pull was reduced by 3.6% (p=0.039, ES=0.34) when using the dolphin kick pullout.
CONCLUSIONS:These data suggest that the use of a dolphin kick during a breaststroke pullout provides a significant advantage over the traditional no-dolphin kick pullout. Furthermore, this advantage comes from enhanced propulsion from the kick but not the pull.
I really don't understand the big deal with doing or not doing this kick. As I've indicated, I don't swim in meets. As long as I'm not disrupting the workout, what's the big deal if I don't do it? Truthfully, I've never seen anyone else do this kick during workouts either.
We have swimmers who don't do flipturns, don't do assigned strokes, etc. As long as they don't disrupt the lane, it all works fine.
Did your first post get deleted?I only see it from other quotes.If you don't race I am not clear what your point is.
As to why do the study,it is important to quantify things.What if the study showed no improvement? You can't be sure until you test.
The first meet I swam in after the rule change was SCM and in the 200 BR I was really out of air the last 50 because I wasn't used to the extra time underwater.IF you swim meets you need to do in practice what you do in a meet and if something is legal and faster why not use it.
By USMS rules the dolphin kick can't be done before beginning the pulldown.
I really don't understand the big deal with doing or not doing this kick. As I've indicated, I don't swim in meets. As long as I'm not disrupting the workout, what's the big deal if I don't do it? Truthfully, I've never seen anyone else do this kick during workouts either.
We have swimmers who don't do flipturns, don't do assigned strokes, etc. As long as they don't disrupt the lane, it all works fine.
Did your first post get deleted?I only see it from other quotes.If you don't race I am not clear what your point is.
As to why do the study,it is important to quantify things.What if the study showed no improvement? You can't be sure until you test.
The first meet I swam in after the rule change was SCM and in the 200 BR I was really out of air the last 50 because I wasn't used to the extra time underwater.IF you swim meets you need to do in practice what you do in a meet and if something is legal and faster why not use it.
By USMS rules the dolphin kick can't be done before beginning the pulldown.
