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Biomechanical Factors in 200 m Freestyle Swimming and Their Relationships with Anthropometric Characteristics

نویسنده:

(6 صفحه - از 49 تا 54)

چکیده:

Introduction: The purpose of this study was to determine the relationships between velocity (V), stroke length (SL), and stroke rate (SR) in each 50 meter distance in 200m freestyle competitions and their relationships with anthropometric characteristics.Material and Methods: The sample consisted of twenty one Indian male inter-university swimmers withmean age of 18.66±1.11 years, mean body mass of 70.04± 1.02, mean height of 177±7.76 cm, mean arm span of 188±8.42cm, mean foot length of 27.28 ± 1.63 cm, and mean body mass index (BMI) of 22.09 ± 2.46 kg/m². All the participants swam and their biomechanical factors were recorded with a video camera (150 Hz) and their time records were recorded using stopwatches at each 50-meter distance.Results: Correlations showed that there was a significant relationship between SR and V. A significantnegative relationship was observed between SL and SR and there were no relationship between the SL and V in 200 meter freestyle swimmers. The results of the stepwise regression technique showed that there were significant differences between velocity and anthropometric characteristics such as standing height, weight, difference of arm span and height and BMI.Discussion and Conclusion: The V of swimming is governed by SL and SR. The difference between height and arm span may explain the difference in stroke length. SR and SL were thus the main contributors to the higher velocity of the swimmers, since the magnitude of SL is related to the propulsive forces that a swimmer exerts while stroking.

خلاصه ماشینی:

"Biomechanical Factors in 200m Freestyle Swimming and Their Relationships with Anthropometric Characteristics Abstract Introduction: The purpose of this study was to determine the relationships between velocity (V), stroke length (SL), and stroke rate (SR) in each 50 meter distance in 200m freestyle competitions and their relationships with anthropometric characteristics. Keywords: Stroke rate, Stroke length, Velocity, Anthropometric characteristics Introduction Swimming techniques are the manners in which the swimmer moves cyclically and are determined by competition rules [1, 2]. Specific anthropometric characteristics such as body form and size, surface area of propulsive segments, and floating capacity have been identified by Toussaint [18] Chatard, [6] and Grimston and Hay [21] as factors exerting a great influence on performance and also stroke mechanics. The purpose of this study was to determine the relationships between velocity (V), stroke length (SL), and stroke rate (SR) in freestyle competitive male swimmers' results and to assess their relationships with anthropometric characteristics. Table1: Means and standard deviations of biomechanical factors for swimmers in 200m freestyle in each 50-meter distance (رجوع شود به تصویر صفحه) Statistical analysis After entering the data all the statistical analyses were performed using the Statistical Package for Social Sciences (SPSS 17. In order to determine the degree of the relationship between biomechanical factors and anthropometric characteristics, one-way factorial analysis of variance (ANOVA) and correlation were used to determine the differences of stroke length (SL), stroke rate (SR) and velocity (V) at different intensities. Table 2: Relationship between stroke rate, stroke length and velocity in 200-m freestyle swimming (رجوع شود به تصویر صفحه) The mean difference was significant at the ."

کلیدواژه ها:

Velocity ،Anthropometric Characteristics ،Stroke rate ،Stroke length


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