In this paper an alternative to the stroke length/stroke frequency approach to swimming technique analysis has been proposed. The need for an alternative model was established by identifying some limitations of the widespread practice of basing technique analysis on those two variables. When applying the stroke length/stroke frequency model it is difficult to quantify variables that can explain differences in stroke length and stroke frequency and to offer advice as to what changes in technique might yield improvement. Another problem with the stroke length/stroke frequency model is that stroke length and stroke frequency are not independent of each other and are also sensitive to physical characteristics of individual swimmers. The proposed model retains a hierarchical structure but differs from the previous model by using statements embodying mechanical principles together with statements of behavioral goals. The lowest levels of the model are the modifiable critical features. These are identified readily as a logical consequence of applying a principle. Measures of critical features indicate how well the swimmer is achieving the behavioral goals. This model was deemed appropriate given that swimmers attempt to optimise their performance by obeying mechanical principles. The model encourages analysts to vary emphasis on particular biomechanical principles according to the individual characteristics of swimmers. It was recognised that some of the critical features may be difficult to measure in competition settings. However, many of the critical features are not inordinately difficult to measure.
© Copyright 1999 coachesinfo.com. All rights reserved.