Why Strong Freestyle Kick Mechanics Really Matter

by SwimSwam 6

November 06th, 2017 International, Masters, Opinion, Training

Courtesy of Gary Hall Sr., 10-time World Record Holder, 3-time Olympian, 1976 Olympic Games US Flagbearer and The Race Club co-founder.

This is part II of Building a Better Freestyle or Flutter Kick.

There is more to a strong kick than flexibility.

For the down kick, the quadriceps, hip flexors and core muscles have to be incredibly strong in order to create a quick snap of the foot backwards. Since the kicking motion occurs over and over again at a very high rate, the leg muscles also need to be incredibly fit. With a freestyle stroke rate of 100 (fifty right arms, fifty left arms per minute), a six beat kick produces a kicking stroke rate of 600 kicks per minute. To sustain that for very long, the legs had better be fit.

So what about the up kick?

The 600 kicks per minute would also include 300 up kicks. How important are those? It turns out, they are very important. Working the legs and feet on the up kick, using the gastrocnemius (calf) muscles, hamstrings, and lower back, produces a nice vortex of current (a wake) following the path of the foot. Add this to the wake of the body moving forward in the water and one has a nice stream of water to push against on the down kick. In other words, a good up kick leads to a more powerful subsequent down kick. It gives the foot more to push against than still water. It also leads to a faster kick cycle, meaning a higher kicking stroke rate.

There is no recovery time for the kick.

One of the biggest differences between the pull and kick is that there really is no recovery time for the kick. Granted, no one can sustain a really hard six beat kick for 800 meters or longer, but for any race of elite swimmers shorter than that, the legs never stop working. Furthermore, the kicking speed really determines the baseline speed of the swim. If you want to elevate your game in freestyle, improving and sustaining your kicking speed is a good place to start.

Gary Hall, Sr., Technical Director and Head Coach of The Race Club (courtesy of TRC)

Gary Hall, Sr., Technical Director and Head Coach of The Race Club (courtesy of TRC)

Yours in swimming,

Gary Sr.

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6 Comments on "Why Strong Freestyle Kick Mechanics Really Matter"

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I somehow missed this until part three came out. Now I’m a week late and this may never be seen, but I’ll give it a shot anyway in case someone reads this in the distant future. I think there was a mixup with strokes per minute and cycles per minute. At 100 strokes per minute (50 right, 50 left), or 50 cycles, a six-beat kick would result in 300 kicks per minute (and thus, 150 upkicks and 150 downkicks). It’s pure semantics, sorry, but I’d hate for anyone to skim this and think they’d be expected to average 10 kicks every second or do a 12-beat kick. I suppose they’d figure it out soon enough once they tried it, though.… Read more »

I caught that too… maybe they were saying 600 when tyou count the 300 down beats and 300 upbeats? That’s what I’m telling my group 🙂

Hi Sven,

With a six beat kick, within each stroke cycle, there are 3 down kicks and 3 up kicks with each leg. Since we have two legs, with a stroke rate of 100/min or cycle rate of 50/min that means we are doing 12 kicks per cycle or 600 kicks per minute. Even 300 kicks per minute is a lot..but the actual number is 600 kicks per minute. Makes me tired just thinking about it.
BTW…I am looking at velocity meter studies every week…so it is easy for me to count the kicks, as we look at velocity, acceleration and deceleration at every .02 seconds in the stroke cycle.

i wanted to kniw that what actually 6 beat kick is….
like a pair is counted as 1 or one stroke of single leg is counted as one

One stroke of single leg is counted as one.

My coach years ago said its like a car where the front wheels go 60 miles an. Hour and the rear go 30 at Cortland State when he was there 1952-1957.

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