Do swimmers conform to criterion speed during pace-controlled swimming in a 25-m pool using a visual light pacer?
| Autor: | Ross Sanders, Carla McCabe, Susana Soares, João Paulo Vilas-Boas, Ricardo J. Fernandes, Simon Coleman, Tomohiro Gonjo |
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| Rok vydání: | 2019 |
| Předmět: |
Male
medicine.medical_specialty backstroke Adolescent visual light pacer 0206 medical engineering Physical Therapy Sports Therapy and Rehabilitation front crawl 02 engineering and technology Athletic Performance law.invention Aquatic locomotion 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation law medicine Humans Orthopedics and Sports Medicine swimming Stopwatch Lighting Swimming Mathematics pacing 030229 sport sciences 020601 biomedical engineering Direct linear transformation Front crawl |
| Zdroj: | Gonjo, T, McCabe, C, Coleman, S, Soares, S, Ricardo, F, Vilas-Boas, J & Sanders, R 2019, ' Do swimmers conform to criterion speed during pace-controlled swimming in a 25 m pool using a visual light pacer? ', Sport Biomechanics, pp. 1-14 . https://doi.org/10.1080/14763141.2019.1572781 |
| ISSN: | 1752-6116 1476-3141 |
| Popis: | The purpose of this study was to investigate whether swimmers follow accurately the instructed speed (vtarget) with the aid of a commercial visual light pacer during front crawl and backstroke swimming in a 25 m pool. Ten male swimmers performed 50 m front crawl and backstroke at different speeds (controlled by a visual light pacer) in a 25 m pool. The mean speed during the 50 m swimming (vS) was quantified from the time measured by a stopwatch. The mean speed of the centre of mass during a stroke cycle in the middle of the pool (vCOM) was calculated from three-dimensional coordinates obtained from Direct Linear Transformation of two-dimensional digitised coordinates of 19 segment endpoints for each of six cameras. Swimmers achieved accurate vS in front crawl and backstroke (ICC = 0.972 and 0.978, respectively). However, vCOM for the single mid-pool sample had lower correlations with vtarget (ICC = 0.781 and 0.681, respectively). In backstroke, vCOM was slower by 4.1–5.1% than vtarget. However, this was not the case in front crawl (1.0-2.7%). With the use of a visual light pacer, swimmers can achieve accurate mean speed overall but are less able to achieve the target speed stroke by stroke. |
| Databáze: | OpenAIRE |
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