Human Movement: Swimming Essay

1670 Words 7 Pages
The research of human movement is quite complex, because human origins are not so determinists as other (bio)mechanical systems; assessing human beings in aquatic environment becomes even more as this is not their natural environment and other physical principles have to be considered. This makes competitive swimming as one of the most challenging sports to perform scientific research (Barbosa et al. 2011). In fact, the challenge of the current study was to assess the physiological and biomechanical behavior of competitive swimmers, in order to close the gap between theory and practice.

To assess the chosen physiological and biomechanical parameters, the intermittent incremental protocol was the prime tool used in this study; the
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Nevertheless, its main advantage is the individualized assessement of AnT (Pyne et al., 2001; Fernandes et al., 2008, 2010; Kilding et al., 2010).

Complementarily, the 7x200m protocol allows the swimmer to begin the test with low velocity, existing a balance between the lactate production and its removal, when used to the AnT assessment. After the AnT has been reached, the anaerobic contribution is truly significant, being the exponential growth of [La-] clearly observed in the following steps. Coen et al. (2001) stated that the increments between steps are one factor of variability to which the AnT assessment is insensitive. The 30 s intervals between steps were proved to be adequate in the v determination associated to the AnT assessment (Wakayoshi et al. 1993). In the current study the swimming v in all protocols was controlled by underwater pace-markers lights on the bottom of the 25 m pool, also used to help the swimmers to keep an even pace along each step, being in accordance with the guidelines to control the workload of swimmers testing (Simon & Thiesmann, 1986).

Since Pyne et al. (2000) proposed the 7x200m protocol, several studies where conducted to assess the IndAnT using intermittent incremental protocols with 200m step lengths (Pyne et al., 2001; Fernandes et al., 2005; Fernandes et al., 2008; Fernandes et

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