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Kinematical Comparison of the 200 m Backstroke Turns between National and Regional Level Swimmers

Santiago Veiga, Antonio Cala, Pablo González Frutos, Enrique Navarro
2013 Journal of Sports Science and Medicine  
National level swimmers maintained similar "turn times" over the event and increased "underwater velocity" and "normalized underwater velocity" in the last (seventh) turn segment, whereas regional level  ...  Key PointsThe underwater turn velocity is as a critical variable related to the swimmers' level of skill in a 200 m backstroke event.Best swimmers perform faster but no longer turn segments during a 200  ...  It could be possible that swimmers extended the turn segment according to their underwater skills and, therefore, it could not be accurate to estimate the same "underwater distance" (i.e. 7.5 m) for all  ... 
pmid:24421733 pmcid:PMC3873664 fatcat:tc6wjafaa5dlpisziwszevq7ru

Comparing three underwater trajectories of the swimming start

Elaine Tor, David L. Pease, Kevin A. Ball
2015 Journal of Science and Medicine in Sport  
In order to assess this, 10 dive trials were analysed using a variety of combinations of anatomical landmarks to allow for determination of the 2D CoG of each body segment.  ...  The underwater phase of the swimming start has been found to be the most important factor in determining overall start performance.  ...  the swimmer throughout the underwater phase of a swimming start.  ... 
doi:10.1016/j.jsams.2014.10.005 pmid:25455956 fatcat:ikwyo2r7nfgyxe43zyqioxccrq

Start and Turn Performances of Competitive Swimmers in Sprint Butterfly Swimming

Tomohiro Gonjo, Bjørn Harald Olstad
2020 Journal of Sports Science and Medicine  
Swimmers had larger vxhead at the beginning of the segment and during the first kick in the start than in turn segment (p < 0.001).  ...  Results also highlighted the importance of the different parts within the underwater segment in each segment.  ...  In such a case, swimmers should spend longer time underwater in the start than turn segment to reach the same breakout velocity.  ... 
pmid:33239947 pmcid:PMC7675631 fatcat:kdpbdyf7xbd7vl6zvydww5ptri

Comparison of starts and turns of national and regional level swimmers by individualized-distance measurements

Santiago Veiga, Antonio Cala, Pablo G. Frutos, Enrique Navarro
2014 Sports Biomechanics  
The aim of this study was to compare the race characteristics of the start and turn segments of national and regional level swimmers.  ...  Higher level swimmers also travelled for longer start and turn distances but only in the race segments where the gain of speed was high.  ...  Correlation analyses have demonstrated that the underwater subsection has the greatest influence on the start segment Pereira, Ruschel, & Araujo 2006) , and swimmers should aim to maximize the velocity  ... 
doi:10.1080/14763141.2014.910265 pmid:25325772 fatcat:txxuydjl3jfqle2cwwkinnihze

Comparison of Starts and Turns between Individual and Relay Swimming Races

Xiao Qiu, Blanca De la Fuente, Alberto Lorenzo, Santiago Veiga
2021 International Journal of Environmental Research and Public Health  
The present study investigated swimmers' performances on the starting and turning segments between individual and relay races.  ...  These results suggest that specific training of the starting and turning segments should be performed under relay conditions to optimise pacing and performance in the underwater sections.  ...  In the turning segment, monitored parameters were defined as: turn underwater distance (horizontal distance between the turning wall and where the swimmer's head resurfaces from underwater); turn underwater  ... 
doi:10.3390/ijerph18094740 pmid:33946789 fatcat:f5cmkkxifvftxkllfql743crqm

Effects of Extended Underwater Sections on the Physiological and Biomechanical Parameters of Competitive Swimmers

Santiago Veiga, Robin Pla, Xiao Qiu, David Boudet, Alexandre Guimard
2022 Frontiers in Physiology  
Controlled increases of underwater sections in trained swimmers can led to optimizing performance in these race segments despite small increases of perceived discomfort.  ...  )] and biomechanical (underwater time, distance, and velocity) parameters of competitive swimmers.  ...  ACKNOWLEDGMENTS The authors would like to acknowledge swimmers and coaches participants in the experiment for their valuable effort and collaboration.  ... 
doi:10.3389/fphys.2022.815766 pmid:35177993 pmcid:PMC8845443 fatcat:urnnapg6a5aapoamkjmezdkq4y

High-Level Swimmers' Kinetic Efficiency during the Underwater Phase of a Grab Start

Marc Elipot, Gilles Dietrich, Philippe Hellard, Nicolas Houel
2010 Journal of Applied Biomechanics  
The purpose of the present work was to study swimmers' efficiency during the underwater phase of the grab start. Eight high-level swimmers participated in this study.  ...  Swimmers began underwater leg propulsion 1.69 m too soon. The global and internal energies were significantly higher for the start with underwater leg propulsion.  ...  ., 1994) : E E E g E g : global kinetic energy E i : internal kinetic energy E e : external kinetic energy I i : Segment mass moment of inertia ω i : Segment transversal rotation velocity m i : Segment  ... 
doi:10.1123/jab.26.4.501 fatcat:fpm6fu364vf2jeulgejybbqeru

Race Analysis in Competitive Swimming: A Narrative Review

Tomohiro Gonjo, Bjørn Harald Olstad
2020 International Journal of Environmental Research and Public Health  
Most studies divided the race into the start, clean swimming, turn, and/or finish segments; however, the definition of each segment varied, especially for the turn.  ...  The number of studies examining races for short course, junior and Paralympic swimmers were also very limited.  ...  ., the permission of exerting one dolphin kick during the breaststroke underwater segment.  ... 
doi:10.3390/ijerph18010069 pmid:33374118 fatcat:r4lnqqlreba25j5oswh5ilzbbe

Search for indicators that determine the effectiveness of overcoming acyclic sections at 50, 100 and 200 meters in freestyle swimming
Поиск показателей, определяющих эффективность преодоления ациклических участков на дистанциях 50, 100 и 200 метров в плавании вольным стилем

Elena Politko, Kharkiv State Academy of Physikal Cuiture, Illia Teslenko, Kharkiv State Academy of Physical Culture
2018 Slobožansʹkij Naukovo-Sportivnij Vìsnik  
The degree of correlation relationship between time, speed and distance for the underwater phase for the speed of passage of various segments of distance is revealed.  ...  Conclusion: improvement of starting and turning techniques, due to the increase in speed and distance of the underwater phase, is one of the reserves for the further growth of the skill of swimmers who  ...  The speed of overcoming of 15-meter segments of swimmers has a high dependence on the length of the "exit".  ... 
doi:10.15391/snsv.2018-5.008 fatcat:3qn43kuwurbczj2sg7nodfx66e

Symmetry in the front crawl stroke of different skill level of able-bodied and disabled swimmers

Karini B. Santos, Paulo C. B. Bento, Carl Payton, André L. F. Rodacki, Daniel Boullosa
2020 PLoS ONE  
and disabled swimmers.  ...  they were recorded by six synchronized cameras (four underwater and two above water) for analysis of the stroke phases, stroke dimensions (anteroposterior, mediolateral and vertical amplitude), index  ...  Acknowledgments The authors thank coaches and swimmers for their collaboration and participation in this research. Author Contributions  ... 
doi:10.1371/journal.pone.0229918 pmid:32191707 fatcat:3sbhn3sx6jct7hkknrswzmliiu

How Should the Transition from Underwater to Surface Swimming Be Performed by Competitive Swimmers?

Jelena Stosic, Santiago Veiga, Alfonso Trinidad, Enrique Navarro
2020 Applied Sciences  
Despite the increasing importance of the underwater segment of start and turns in competition and its positive influence on the subsequent surface swimming, there is no evidence on how the transition from  ...  underwater to surface swimming should be performed.  ...  Table 1 . 1 Segmental kinematics-mean (standard deviation)-of competitive swimmers when transiting from underwater to surface swimming in all four strokes.  ... 
doi:10.3390/app11010122 fatcat:pkrlgbsefzgsvlupwripsaehp4

Using image processing for biomechanics measures in swimming

Robin P. Dubois, David V. Thiel, Daniel A. James
2012 Procedia Engineering  
Underwater video analysis is common in elite level swimming for stroke correction, technique analysis and as a visual aid to support coaches and athletes.  ...  Thus we address the problems of detection, segmentation and estimation of body configuration using several image processing algorithms.  ...  The camera must be drawn underwater with a variable speed accordingly to the velocity of the swimmer.  ... 
doi:10.1016/j.proeng.2012.04.138 fatcat:htbvzm34ofe2herfe4fhoqlb44

Influence of Angles of Attack, Frequency and Kick Amplitude on Swimmer's Horizontal Velocity during Underwater Phase of a Grab Start

Nicolas Houel, Marc Elipot, Frédéric André, Philippe Hellard
2013 Journal of Applied Biomechanics  
A three-dimensional analysis of the underwater phase of ten swimmers of national level was conducted.  ...  Kinematics variables that swimmers have to take into account to improve their underwater phase of starts are unknown.  ...  All these specific conditions can't be easily estimated during the start underwater phase because of the velocity decrease of the swimmer, as well as the modification of the swimmers' segment orientation  ... 
doi:10.1123/jab.29.1.49 fatcat:cjzfu6trfrewzlsyk4oddyfomm

The key kinematic determinants of undulatory underwater swimming at maximal velocity

Chris Connaboy, Roozbeh Naemi, Susan Brown, Stelios Psycharakis, Carla McCabe, Simon Coleman, Ross Sanders
2015 Journal of Sports Sciences  
Kinematic data at maximal undulatory underwater swimming velocity were collected from 17 skilled swimmers.  ...  The optimisation of undulatory underwater swimming is highly important in competitive swimming performance.  ...  Each trial consisted of the swimmer starting from point A (Figure 1 ) at the left end of the pool, pushing off the wall and swimming underwater using undulatory underwater swimming.  ... 
doi:10.1080/02640414.2015.1088162 pmid:26367778 fatcat:omfibu44ararjfx3i2wf3gdsoe

Key Factors Related to Short Course 100 m Breaststroke Performance

Bjørn Harald Olstad, Henrik Wathne, Tomohiro Gonjo
2020 International Journal of Environmental Research and Public Health  
well as cycle rate and cycle length during each swimming cycle from 15 male swimmers during a 100 m breaststroke race.  ...  clean swimming velocity by finding an optimal balance between cycle length and rate, (III) 10 m turn-out with maintaining a strong wall push-off, and (IV) establishing a high transition velocity from underwater  ...  Acknowledgments: The authors thank the swimmers and the coaches for their collaboration and commitment to this study. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/ijerph17176257 pmid:32867383 fatcat:ujjtcdgnpfd4va4cvqktfujg7i
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