Technique Testing For Swimmers and Teams


Swimming Video Analysis

We are available to provide Swim Stroke Doctor video swimming testing and analysis at your facility or here in the Chicagoland area.

Video provides scientific support for swimming technique analysis of swimmers and teams. The testing and feedback is conducted by Dan Lynch, inventor of the Swim Stroke Doctor system.

His experiences have been as a former swimmer at University of Illinois, student of the swim method by Bill Wadley, Rein Haljand, Frank Keefe, and Cecil Colwin, as USA Swimming referee for 17 years and from the techniques testing of swimmers since he started this patented video product in 2012.

A computer based video system for underwater recordings of the swimmers is used, allowing the technical review of the movements at the start, in turns and during swimming. A motion camera or cameras are used in our patented Lane View Video system. The swimmer may be recorded from the side, front and diagonally at 45 degrees. HD analog video format is method of recording.


For analysis a computer software based analysis system is used. Our training methodology is designed on swimming experiences and the works of Cecil Colwin. Stroke direction is given based on the strokes of the tested swimmers. Up to 15 technical parts used in competitive swimming may be analyzed: 4 styles, 4 starts, 4 turns + 3 turns of the Individual Medley.

In the course of testing the parameters and quality of technique are analyzed. The measuring of parameters will be done in software based on PC or MAC format computers, specially created for this purpose. Measured parameters help to evaluate technique skills of a given swimmer. Video of the test will be shared via cloud location and may be uploaded to social medial like YouTube and still frame picures as .jpg files.

The Swim Stroke Doctor system provides coaches and their swimmers the most important underwater training view of swimming today! It is the “Game Changer” for swim athletes and their coaches.

* example video of analysis

Requirements for pool and swimmers when testing at your site.

For testing there must be a 25y or 25m swimming pool with at least 3 lanes and clear water. The side of the pool must be free of any obstacles for free movement deckside. Pool photos are required in advance.

Swimmer will swim on the first, second or third lane (depending on the pool). For video recordings these lanes must be reserved for 2-3 hours (it takes 60 min. to setup equipment and approximately 5 min for each swimmer to swim 100y + do some more 25y laps).

All swimmers should be ready according to a list, order of appearance. The optimum number of swimmers to be tested during one visit is between 10 and 20. A swimmer may be tested for 3 elements – the stroke, the start, and the turn. Medley swimmers may be tested for all stroke styles, 3 turns and a butterfly start.


If the video of the swimmers takes place in the morning then additional pre-analysis will be done during the afternoon and night.

If swimmer feedback sessions are added, they begin the next morning. Duration of a session with each swimmer depends on the stroke and may last 15 min. The optimum number of swimmers analyzed in a day is 20.

The swimmers must have a schedule and an order to be ready from 8am till 1pm (10 swimmers) and from 3pm till 7pm (10 swimmers). The session of IM swimmers may take longer. Swimmers may come with a coach. A special room is needed for a good feedback session. All equipment will be brought by me and set up in that room.

During the feedback session each individual swimmer will review a cloud version of the analysis, with the original video clips of his technique and a video of the feedback session including graphics and values of measured parameters with advice and comments.

Testing in Chicago

It is possible also to come to Chicago for the testing procedure. The requirements for the pool and feedback location will be taken care of by us. Minimum program for testing in Chicago will be for 10 swimmers over a period of 2 days.
1st day – arrival in Chicago Saturday morning
2nd day – Sunday morning 8:00am filming; feedback same day 3pm to 7pm


This kind of testing for technical preparation of swimmers is professional. It is based on swim theory and best practice and it helps to find new technique elements based on a swimmers individual style, to control the preparation and correct stroke mistakes.

Recommend to test swimmers technique 4 times a season:

    • At season start, 2 times with an interval of 1 month
    • Pre-competition period for starts turns and styles
    • Immediately before or after main competitions (best shape)

Contact us to learn more

Voicemail: +1 708-829-8293
E-mail: dvlynch (at)