Product Review: “FINIS HydroHip” for body rotation

When I was in elementary school , the swim team I was on had a very talented swimmer who had all the records for the men’s 15-18 age group. Everyone looked up to him and he eventually went to the Athens Olympics in 2004 and Beijing Olympics in 2008.

miguel has great rotation

Watching him swim, I noticed that even though he was only about 5’7” (170 cm),  when he swam in his races he looked much bigger than everyone else. For the most part, this seems to be the case for good swimmers. Faster swimmers always appeared bigger than they actually are when they swim. Why is this? The answer is rotation. They had bigger strokes because they utilize rotation to maximize the length of their stroke. Watching him swim taught me the importance of body rotation.

Last year I purchased the product “HydroHip” from FINIS that helps with body rotation. It is a belt that wraps around your waist and adds two fins to create resistance when you rotate your body. This teaches you to swim while driving with your hips and also strengthens your transversal abdominal muscles.

Swimming with these do not slow you down too much and can easily be used in practice such as during warm-up or the set right before or after the main set. I also think they can be used for drills such as the one-arm freestyle/backstroke in addition to the kicking drill where your arms are places by your sides.hydrohip I was afraid that the belt would not be comfortable due to the plastic fins. I feared the fins would poke me during each stroke. Surprisingly the belt is quite comfortable and I did not have any discomfort whatsoever with the fins. The belt strap is made of nylon and is one-size-fits-all and can quickly be adjusted.

I usually suck my stomach in and tighten it similar to a weightlifting belt so that it is nice and tight. This way when I rotate the belt does not wiggle around and cause chafing.

In conclusion, I highly recommend this product and believe it can help immensely for freestyle and backstroke.

swimmer wearing hydrohip

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The Scapula Elevated Streamline

 

Ten years ago, Kosuke Kitajima was by far the best at the breaststroke pull-outs. At 5’10″ that is a pretty impressive feat. What was it that made him better than everyone else? No, not his illegal dolphin kick. Even after 2005 when FINA legalized the dolphin kicks in the pullouts, he was still ahead of the rest as shown below. This was the 2008 Japanese Olympic Trials. You can see he makes over a half body lead just with the start.

 

In an interview he mentioned that he would shrug his shoulders during the pull-out. This lessened his drag profile and helped him go farther and faster. He no longer has that edge as all world class breaststrokers shrug their shoulders now.

It seems bizarre that people were doing something seemingly simple in a sub-optimal fashion. This inspired me to look at the regular streamline. Is it done optimally?

I asked a former teammate to get into the best streamline position he can, later I asked him to shrug his shoulders while in the streamline position. There is a pretty evident difference between the two.

everetts streamline elevated vs depressed

 

Firstly, he was able to improve his drag profile by making his streamline longer and narrower.

Secondly, he was able to eliminate the space between neck and shoulders which decreases the surface area of skin to water contact, and thereby decreases friction resistance.

I also tried the two streamlines and although the difference is not as obvious my drag profile is improved with the narrowing of my streamline

.my streamline scapula elevated vs depressed

I encourage you to play with this idea as well and for those interested here are the various scapula movements and their names.

All the various scapula movements