A new system for analyzing swim fin propulsion based on human kinematic data

Nicolas, Guillaume; Bideau, Benoît; Bideau, Nicolas; Colobert, Briac; Guerroue, G. Le; Delamarche, Paul

doi:10.1016/j.jbiomech.2010.03.031

Cited by 10 publications

(10 citation statements)

References 29 publications

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“…Assuming the same Cd and orientation with respect to the water flow for both feet, a smaller foot implies a reduction of the amount of water that the swimmer pushes backward, and, consequently, may hamper kick performance. In other words, the smaller foot area may decrease the efficiency of the leg kick, 14 especially in the downward phase and reduces propulsion.…”

Section: Discussionmentioning

confidence: 99%

The classification in Para swimming: Analysis of a Paralympic champion’s withdraw case

Barbosa¹,

Araújo²,

Kanayama³

et al. 2020

International Journal of Sports Science & Coaching

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This study compared the in-water bilateral leg kick speed difference between a Paralympic and an Olympic athlete. The Paralympic (former S10) was not eligible after his reclassification in 2019, whereas the Olympic was a semi-finalist in 50 m freestyle in Rio 2016. Kick performance was assessed by a speedometer in one push-off ∼15 m maximal kick sprint. Ten complete cycles were analyzed, and the average speed of each leg in each cycle was calculated. Computerized planimetry assessed plantar feet areas. Differences between right and left feet areas were –22% and –2.1% for the Paralympic and Olympic, respectively. The left kick was slower in the Paralympic (p < 0.0001, ES: 2.35, very large), whereas no difference was found for the Olympic (p = 0.55, ES: 0.27, small). There is a substantial bilateral leg kick speed difference for the Paralympic, but not for the Olympic. The impact of Paralympic’s impairment on his kick performance considerably differs when using quantitative and qualitative assessments.

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Section: Discussionmentioning

confidence: 99%

The classification in Para swimming: Analysis of a Paralympic champion’s withdraw case

Barbosa¹,

Araújo²,

Kanayama³

et al. 2020

International Journal of Sports Science & Coaching

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“…(iv) Most experimental results we know [16,17] are mainly interested in kinematic aspect of the mechanical problem. Nevertheless, the results obtained in the case of a rigid fin [14] allowed us to have a basis for comparison.…”

Section: Discussionmentioning

confidence: 99%

Fluid-Structure Interaction Effects on the Propulsion of an Flexible Composite Monofin

Baroudi

Razafimahéry

2014

Journal of Engineering

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Finite element method has been used to analyze the propulsive efficiency of a swimming fin. Fluid-structure interaction model can be used to study the effects of added mass on the natural frequencies of a multilayer anisotropic fin oscillating in a compressible fluid. Water by neglecting viscidity effects has been considered as a surrounding fluid and the frequency response of the fin has been compared with that of vacuum conditions. It has been shown that because of the added mass effects in water environment, the natural frequencies of the fin decrease.

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“…The analysis of the fin drive's mechanical parameters was the subject of Guillaume Nicolas et al (Nicolas et al 2010). The authors present the research methodology based on the analysis of hydrodynamic and energy parameters.…”

Section: Introductionmentioning

confidence: 99%

The Stand For Fin Drives Energy Testing

Grządziela¹,

Kluczyk²,

Batur³

2021

ped

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The development of recreational diving and the new biomimetic vehicles for civilian and military purposes indicates that fins drives’ effectiveness should be a standard research procedure. The different sizes, construction and technical solutions of fin thrusters are the reason that no standard has been introduced for evaluating their efficiency. The paper presents an episode of the research carried out as part of a project financed by The National Centre for Research and Development in Poland concerning fin drives development. The first chapter presents a literature analysis of currently used research methods. A different approach to assessing efficiency was indicated, ranging from the study of the diver’s respiratory efficiency to the manipulator measurement methods. The hydrodynamic parameters, which analyzed the propellers, including fins, and the fish swimming motility characteristics, were indicated. The next chapter presents the water tunnel for basic research with measuring equipment and the range of applications. The methodology for assessing the hydrodynamic and energy efficiency of fin’s drives is presented in the third chapter. The fins’ kinematics and dynamics analysis indicated an initial set of geometric, kinematic, and dynamic parameters for energy and functional assessment purposes. The scope of available tests covered issues complex to quantify unambiguously; hence the obtained results were initial. The form made this assessment of successive pool tests, the aim of which was to analyze the kinematics of the fin’s operation. The trials of a representative fins thruster and the comments indicate the test stand’s practical use for testing various propellers.

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A new system for analyzing swim fin propulsion based on human kinematic data

Cited by 10 publications

References 29 publications

The classification in Para swimming: Analysis of a Paralympic champion’s withdraw case

The classification in Para swimming: Analysis of a Paralympic champion’s withdraw case

Fluid-Structure Interaction Effects on the Propulsion of an Flexible Composite Monofin

The Stand For Fin Drives Energy Testing

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