Swimming Technique Misconceptions: Butterfly Undulation


Swimming Technique Misconceptions: Butterfly Undulation

PHOENIX-A common swimming technique misconception is that an emphasis on undulation (a wave-like motion of the body) is necessary for an effective butterfly. In reality, an optimal butterfly has minimal undulation.
An emphasis on butterfly undulation is consistent with conventional wisdom. However, when a swimmer attempts to undulate, he/she inevitably has excess vertical motion that distorts the body position and renders the arm motion far less effective.
In contrast, a swimmer can learn to kick with minimal undulation so that the body stays relatively level. A swimmer with a level body position has a more stable base of support for arm propulsion to swim faster with less energy. (Complete Story page 20, by Dr. Rod Havriluk)
Dr. Rod Havriluk is a sports scientist and consultant who specializes in swimming technique instruction and analysis. His unique strategies provide rapid improvement while avoiding injury. He can be reached at the website for Swimming Technology Research (Tallahassese, Fla.) www.SwimmingTechnology.com.

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012 Darian Townsend: Captain Amercia
by Annie Grevers
Darian Townsend was a member of South Africa’s 4 x 100 freestyle relay that upset the United States men for Olympic gold at Athens in 2004. Just last summer, he became a U.S. citizen, and the 30-year-old is now viewed as a veteran and a leader for the Red, White and Blue.

016 Event Specialization: What to look for, When to do it
by Michael J Stott

026 2014 Top 12 World Masters Swimmers of the Year
by Jeff Commings, Annie Grevers, Jason Marsteller and Emily Sampl

035 What is a “Master”?
by Jeff Commings
Masters swimmers come in all shapes and sizes. Some are ultra-competitive; others are in it just to stay fit and possibly live longer. Swimming World profiles three different types of Masters swimmers and they all seem to agree on one thing: Masters swimming is a lifelong sport.

010 Lessons With the Legends: Nort Thornton

020 Swimming Technique Misconceptions: Butterfly Undulation
by Rod Havriluk

022 Teaching Dolphin Kick
by Bridger Bell
Dolphin kick appears in all four strokes-including starts and turns. The following program can help swimmers of any aptitude learn to execute effectively what may be the fastest movement in competitive swimming: the dolphin kick.

025 Technique: Breathing During Backstroke

042 Q & A With Coach Jason Weber
by Michael J. Stott

042 How They Train Jenny Hill
by Michael J. Stott

013 Dryside Training: Sprint Freestyle Set
by J.R. Rosania

028 Goldminds: Swimming’s Most Importatnt Lessons (Part 1: #’s 1-15)
by Wayne Goldsmith
Here is a summary of the most important lessons the author has learned in the business of helping swimmers and coaches realize their potential-a personal journey 25 years in the making!

045 Up & Comers

008 A Voice For The Sport

040 Moms at Meets
by Annie Grevers
Swimming World presents a quarterly series that showcases moms and dads of swimmers from around the country.

046 Gutter Talk

048 Parting Shot


  1. Annie Cox

    Charlie Cox