Natatometer. Real-Time Intra-Cycle Velocity Data for Swimming Stroke Correction

Krylov, A.I.; Boutov, Alex; Wendt, G. R.

doi:10.5930/issn.1994-4683.2014.07.113.p109-113

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…After the seventy-four full texts were screened, one was excluded by type [ 50 ], six by exposure [ 51 , 52 , 53 , 54 , 55 , 56 ], seven by outcomes [ 57 , 58 , 59 , 60 , 61 , 62 , 63 ] and one by participant [ 64 ] eligibility criteria. Reference list analysis revealed 31 studies on the topic as potentially meeting the inclusion criteria, with full-text analysis excluding 10 articles by type [ 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 ], 2 by exposure [ 75 , 76 ] and 8 by outcomes [ 18 , 77 , 78 , 79 , 80 , 81 , 82 , 83 ]. Seven additional studies from snowballing citation tracking process were deemed eligible for inclusion, and all were included [ 29 , 84 , 85 , 86 , 87 , 88 , 89 ].…”

Section: Resultsmentioning

confidence: 99%

Intracycle Velocity Variation in Swimming: A Systematic Scoping Review

et al. 2023

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Intracycle velocity variation is a swimming relevant research topic, focusing on understanding the interaction between hydrodynamic propulsive and drag forces. We have performed a systematic scoping review to map the main concepts, sources and types of evidence accomplished. Searches were conducted in the PubMed, Scopus and Web of Science databases, as well as the Biomechanics and Medicine in Swimming Symposia Proceedings Book, with manual searches, snowballing citation tracking, and external experts consultation. The eligibility criteria included competitive swimmers’ intracycle velocity variation assessment of any sex, distance, pace, swimming technique and protocol. Studies’ characteristics were summarized and expressed in an evidence gap map, and the risk of bias was judged using RoBANS. A total of 76 studies, corresponding to 68 trials involving 1440 swimmers (55.2 and 34.1% males and females), were included, with only 20 (29.4%) presenting an overall low risk of bias. The front crawl was the most studied swimming technique and intracycle velocity variation was assessed and quantified in several ways, leading to extremely divergent results. Researchers related intracycle velocity variation to coordination, energy cost, fatigue, technical proficiency, velocity, swimming techniques variants and force. Future studies should focus on studying backstroke, breaststroke and butterfly at high intensities, in young, youth and world-class swimmers, as well as in IVV quantification.

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Section: Resultsmentioning

confidence: 99%

Intracycle Velocity Variation in Swimming: A Systematic Scoping Review

et al. 2023

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Integral indicators of the swimming techniques effectiveness of highly qualified crawl-stroke swimmers

Krylov

Gorelov

Tretyakov

2019

PPS

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It is known that prominent world-class swimmers are characterized by the manifestation of specific abilities. These abilities allow to constantly maintain a stable speed swimming of different segments of the distance. In this case, highly qualified swimmers can increase the maximum speed of swimming on a segment of a given length. They achieve this by increasing the total external mechanical power. In this case, swimmers keep, and in some cases even reduce the power of the stroke. It is implemented the phase-specific principle of creating driving forces during each phase. At the same time, the principle of creating driving forces is common to all swimming locomotion. The article gives a rationale for the effectiveness of the integral criterion application for evaluating swimming techniques. The integral criterion for evaluating the swimming technique was applied at remote speeds of the entire spectrum of the competitive front crawl swimming program. Material . The study involved 9 highly qualified crawl-stroke swimmers, members of Russia national team. The age of the participants ranged from 18 to 24 years. It is studied the kinematic and kinetic characteristics of the front crawl swimming technique of highly qualified athletes at various competitive distances. The studies applied video recording of swimmer’s movements with OLYMPUS TG-5 camera (Vietnam) from a depth of 4.5 m. Three luminous markers located on the swimmer’s hips were applied to record the dynamic parameters of swimmer’s movements. The results of the swims were processed with Natatometry™ (Russia). Results . It was determined that swimmers demonstrated high indices of the intra-cyclic dynamic index (ICDI - Intra Cycle Dynamic Index) and the dynamic coordination index of the swimming cycle (DCI - Dynamic Coordination Index) at speeds in medium distances relative to speeds at sprint distances. Swimmers demonstrate the ability to generate a significant amount of promotional efforts at 100 m distance that ensure the achievement of high speeds. It is established that no general trends in ICDI changes in individual structural phases of the stroke. This indicates the demonstration of individual specific features in the swimming technique of each athlete. Conclusion . It is considered the feasibility of applying the integral indicators ICDI and DCI for a quantitative assessment of the intra cycle promotion forces interaction and hydrodynamic resistance forces arising at the level of an integral biomechanical system of the swimming cycle.

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Natatometer. Real-Time Intra-Cycle Velocity Data for Swimming Stroke Correction

Cited by 2 publications

References 2 publications

Intracycle Velocity Variation in Swimming: A Systematic Scoping Review

Intracycle Velocity Variation in Swimming: A Systematic Scoping Review

Integral indicators of the swimming techniques effectiveness of highly qualified crawl-stroke swimmers

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