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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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VARIABILITY OF COORDINATION PARAMETERS AT 400-M FRONT CRAWL SWIMMING PACE |
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Christophe Schnitzler1,2  ,
Ludovic Seifert1 and Didier Chollet1 |
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1C.E.T.A.P.S. Laboratory UPRES EA 3832: University of Rouen, Faculty of Sports Sciences, France 2Laboratory EA 1342, Marc Bloch University of Strasbourg, Faculty of Sports Sciences, France |
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© Journal of Sports Science and Medicine (2009) 8, 203 - 210 Search Google Scholar for Citing Articles |
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| ABSTRACT | |||
| This study examined the variability of physiological, perceptual,
stroke and coordination parameters in both genders during several swim trials
at the 400-m pace speed. Twelve national level competitors (6 men, 6 women)
swam 400-m at maximal speed. They then swam three additional trials (100,
200 and 300-m) at the pace (speed) of the previous 400-m. Three cameras
were used to determine stroke cycle [speed (V), stroke length (SL), stroke
rate (SR)] and coordination [index of coordination (IdC), stroke phases]
parameters. Physiological [heart rate (HR) and lactate [La-] and perceptual
[subjective workload (TWL)] parameters were assessed after each swim trial.
Inter-trial data indicated that HR, [La-] and TWL increased significantly
with the distance swum (p < 0.05). Inter-trial comparison did not show
significant variation of stroke cycle and coordination parameters. Inter-lap
data were examined within the 400-m and showed that V and SL decreased significantly
at the beginning of the trial (p < 0.05), but IdC and SR remained unchanged
(p > 0.05). Thus, despite changes in both physiological and perceptual
responses consecutive to increasing fatigue, coordination parameters remained
stable during an all-out 400-m freestyle swim. The examination of these
parameters based on short-distance trials appears then to be valid, which
offers interesting perspectives for swim testing.
Key words: Testing, motor control, biomechanics, variability, fatigue, competitive swimming. |
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