kem wrote:
I get the logic behind the horizontal force in the pull but one thing that's always been confusing to me a little is that there must be some period of the stroke where some component is going down. So how do you minimize that?
For instance, when you're swimming, your not above the water and not dipping your arms directly into the water perpendicularly. You're under the water or at water level, and you're not really able to extend your arms like a paddle (I think?). In the Hackett video, he does have a downward sweep where for some part he's pushing down at least partially, although it looks like this is followed by a rearward sweep with his upper arm.
I always try to kind of "scoop" the water backward but I'm not sure that makes sense, especially after seeing the Hackett video.
there is a time when really good swimmers generate lift, but it's not when they're pushing down on the water. it's during the extension phase. if you look at that grant hackett video, you can see that his hand is very gently angled during the extend phase of his stroke. others who're more knowledgeable can comment, but i think there's a lift component to that.
once he transitions to the next phase of his stroke, where he forms his pulling surface, the amount he pushes down is miniscule. he very quickly transitions his forearm and hand as one big pulling surface that pulls straight back. that is the most important thing you can say about his pull.
that requires the elbow to remain high when
in the water, and a lot of adult onset swimmers hear "high elbow" and they think that means during the recovery. i think what we see is that it doesn't much matter to speed whether your elbow is higher than your hand or not during the out-of-the-water recovery. but keeping that elbow high when in the water, anchoring that elbow in place, near the surface, rotating your forearm so that it's perpendicular to the water, and then really the whole arm, from the shoulder, is included during the propulsive phase.
if you look at basically every swimmer since hackett, who swims anything longer than 400 meters, you'll see that stroke. but swimming is the only activity in triathlon where good form doesn't come naturally, instinctively. you have to unlearn instinctive form and replace it with adopted form.
Dan Empfield
aka Slowman