4.2 Article

Quantification of swimmers' ability to apply force in the water: the potential role of two new variables during tethered swimming

Journal

SPORTS BIOMECHANICS
Volume -, Issue -, Pages -

Publisher

ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/14763141.2022.2089220

Keywords

Flume; performance testing; sprint; strength assessment; training

Funding

  1. Ministry of Economy, Industry and Competitiveness (Spanish Agency of Research) [DEP2014-59707-P]
  2. European Regional Development Fund (ERDF) [DEP2014-59707-P, PGC2018-102116-B-I00]
  3. Ministry of Science, Innovation and Universities (Spanish Agency of Research) [PGC2018-102116-B-I00]
  4. Spanish Ministry of Education, Culture and Sport [FPU17/02761]

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This study examined the relationship between the ability to apply force in the water and free swimming performance. The results showed that the relative change in force could be used to quantify this ability and it was negatively correlated with free swimming speeds.
This study aimed 1) to examine variables that may quantify the ability to apply force in the water and 2) to test their relationship with free swimming performance. Sixteen regional-level swimmers participated in this study. Average (F-avg) and maximum (F-max) forces were measured for 30 s arm stroke tethered swimming in a flume at zero and 1.389 m/s water flow speeds. The maximum and average force's relative changes (Delta F-max and Delta F-avg, respectively) were calculated between tethered swimming at zero and 1.389 m/s water flow speeds. Free swimming speeds were obtained from 25, 50, and 100 m front crawl trials, and were correlated with Delta F-max and Delta F-avg. A negative correlation was found between Delta F-max and 25, 50 and 100 m speeds (r = -0.84, r = -0.74, r = -0.55; p < 0.05, respectively) and Delta F-avg correlated negatively with 25 and 50 m speeds (r = -0.63, r = -0.54; p < 0.05, respectively), but it did not correlate with 100 m swimming speed. The relative change in force could be used to quantify the ability to apply force in the water. This could aid coaches to understand if changes in swimmers' ability to apply force in the water contribute to improvements in performance.

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