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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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SEARCHING FOR CRITERIA IN EVALUATING THE MONOFIN SWIMMING TURN FROM THE PERSPECTIVE OF COACHING AND IMPROVING TECHNIQUE |
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Marek Rejman 
and Grażyna Borowska |
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Department of Swimming, University School of Physical Education, Wroclaw, Poland |
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© Journal of Sports Science and Medicine (2008) 7, 67 - 77 Search Google Scholar for Citing Articles |
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| ABSTRACT | |||
| This study aims to analysise the selected kinematic parameters
of the monofin swimming turn. The high complexity of performing turns is
hindered by the large surface of the monofin, which disturbs control and
sense of the body in water. A lack of objective data available on monofin
swimming turns has resulted in field research connected with the specification
of parameters needed for the evaluation of the technique. Therefore, turns
observed in elite swimmers contain underlying conclusions for objective
criteria, ensuring the highest level of coaching and the improving of turns
in young swimmers. Six, high level, male swimmers participated in the study.
The subject of the analysis was the fastest turn, from one out of three
trial turns made after swimming a distance of 25 m. Images of the turns
were collected from two cameras located under water in accordance with the
procedures of the previous analyses of freestyle turns. The images were
digitized and analysed by the SIMI®- Movement Analysis System. The interdependency
of the total turn time and the remaining recorded parameters, constituted
the basis for analysis of the kinematic parameters of five turn phases.
The interdependency was measured using r- Pearson's correlation coefficients.
The novel character of the subject covered in this study, forced interpretation
of the results on the basis of turn analyses in freestyle swimming. The
results allow for the creation of a diagram outlinig area of search for
an effective and efficient monofin swimming turn mechanism. The activities
performed from the moment of wall contact until the commencement of stroking
seem to be crucial for turn improvement. A strong belief has resulted that,
the correct monofin swimming turn, is more than just a simple consequence
of the fastest performance of all its components. The most important criteria
in evaluating the quality of the monofin swimming turn are: striving for
the optimal extension of wall contact time, push-off time and glide time.
Key words: Monofin, turn, kinematics, technique evaluation. |
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