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Ten swimmers performed a 200\u2009m front crawl swim, as well as 50, 100, and 150\u2009m at the 200\u2009m pace. Biomechanical, energetic, coordinative, and muscular factors were assessed during the 200\u2009m swim. Multiple linear regression analysis was used to identify the weight of the factors to the performance. For each lap, the contributions to the 200\u2009m performance were 17.6, 21.1, 18.4, and 7.6% for stroke length, 16.1, 18.7, 32.1, and 3.2% for stroke rate, 11.2, 13.2, 6.8, and 5.7% for intracycle velocity variation in<jats:italic>x<\/jats:italic>, 9.7, 7.5, 1.3, and 5.4% for intracycle velocity variation in<jats:italic>y<\/jats:italic>, 17.8, 10.5, 2.0, and 6.4% for propelling efficiency, 4.5, 5.8, 10.9, and 23.7% for total energy expenditure, 10.1, 5.1, 8.3, and 23.7% for interarm coordination, 9.0, 6.2, 8.5, and 5.5% for muscular activity amplitude, and 3.9, 11.9, 11.8, and 18.7% for muscular frequency). The relative contribution of the factors was closely related to the task constraints, especially fatigue, as the major changes occurred from the first to the last lap.<\/jats:p>","DOI":"10.1155\/2013\/897232","type":"journal-article","created":{"date-parts":[[2013,3,17]],"date-time":"2013-03-17T21:00:53Z","timestamp":1363554053000},"page":"1-12","source":"Crossref","is-referenced-by-count":37,"title":["Interplay of Biomechanical, Energetic, Coordinative, and Muscular Factors in a 200\u2009m Front Crawl Swim"],"prefix":"10.1155","volume":"2013","author":[{"given":"Pedro","family":"Figueiredo","sequence":"first","affiliation":[{"name":"Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Rua Dr. Pl\u00e1cido Costa 91, 4200-450 Porto, Portugal"},{"name":"Higher Education Institute of Maia (ISMAI), Avenida Carlos Oliveira Campos, 4475-690 Maia, Portugal"}]},{"given":"David 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