A comparison of the kinematics of the dolphin kick in humans and cetaceans

Loebbecke, Alfred von; Mittal, Rajat; Fish, Frank E.; Mark, Russell

doi:10.1016/j.humov.2008.07.005

Cited by 46 publications

(42 citation statements)

References 17 publications

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“…Underwater swimming techniques, such as the undulatory swimming or the breaststroke pullout with dolphin kick (McLean, Havriluk, & Brandt, 2008) are relatively new in competitive swimming (Arellano, Pardillo, & Gavilán, 2002;Von Loebbecke, Mittal, Fish, & Mark, 2009). However, at present, there is a growing research interest in these competitive techniques Hochstein & Blickhan, 2011;Puel et al, 2012) as they are supposed to provide a competitive edge to swimmers (Atkinson, Dickey, Dragunas, & Nolte, 2014;von Loebbecke, Mittal, Fish, et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…However, at present, there is a growing research interest in these competitive techniques Hochstein & Blickhan, 2011;Puel et al, 2012) as they are supposed to provide a competitive edge to swimmers (Atkinson, Dickey, Dragunas, & Nolte, 2014;von Loebbecke, Mittal, Fish, et al, 2009). Several factors have been reported to affect the effectiveness of underwater undulatory swimming, including the kick frequency (Cohen et al, 2012), amplitude (Houel, Elipot, André, & Hellard, 2013), symmetry (Atkinson et al, 2014) and swimmer morphology (von Loebbecke, Mittal, Fish, et al, 2009). Distances traveled with underwater movements have been found relevant to the starting and turning (Blanksby, Elliott, McElroy, & Simpson, 1998;Tourny-Chollet, Chollet, Hogie, & Papparodopoulos, 2002) competitive performances.…”

Section: Introductionmentioning

confidence: 99%

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Effects of different swimming race constraints on turning movements

Veiga

Mallo

Navandar

et al. 2014

Human Movement Science

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a b s t r a c tThe aim of this study was to investigate the effects of different swimming race constraints on the evolution of turn parameters. One hundred and fifty-eight national and regional level 200-m (meters) male swimming performances were video-analyzed using the individualized-distance model in the Open Comunidad de Madrid tournament. Turn (p < .001, ES = 0.36) and underwater distances (p < .001, ES = 0.38) as well as turn velocity (p < .001, ES = 0.69) significantly dropped throughout the race, although stroke velocity and underwater velocity were maintained in the last lap of the race (p > .05). Higher expertise swimmers obtained faster average velocities and longer distances in all the turn phases (p < .001, ES = 0.59), except the approach distance. In addition, national level swimmers showed the ability to maintain most of the turn parameters throughout the race, which assisted them in improving average velocity at the end of races. Therefore, the variations in the turning movements of a swimming race were expertise-related and focused on optimizing average velocity. Turning skills should be included in the swimming race action plan.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of different swimming race constraints on turning movements

Veiga

Mallo

Navandar

et al. 2014

Human Movement Science

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“…in the underwater dolphin kick. Human undulatory swimming has been investigated by several research groups, with experimental works to determine joint momentum or Strouhal number [7]. Video footage of swim motions are employed to analyse special movements by interpolating surface points between these frames [8].…”

Section: Introductionmentioning

confidence: 99%

Size does matter: The use of fish motion for improving human swimming simulations

Pacholak

Brücker

2017

Applied Mathematical Modelling

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In this study we evaluated the length and volume inconsistencies that occur when applying simple motion functions onto surface models of swimming fish and human, respectively. The larger the size (diameter and length) of the body, the larger are theses inconsistencies. To eliminate these errors, different surface correction algorithms are introduced. Additional terms are implemented to overcome structural insufficiencies through over-stretching and overlapping in sensible body parts. For human undulatory swimming these models combine the motion of rigid extremities with the smooth surface bending at joints. The advantages of this hybrid model can be crucial for Computational Fluid Dynamics, where deviation from natural behaviour results in unrealistic surface pressures and artificial vortex structures. The structural improvements are also promising for computational graphic programming, where skin-like stretching surfaces mediate a natural impression.

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“…They concluded that the skin-friction drag decreased 5.3%, independently from swimming speeds, with increasing average boundary-layer temperature provided that the flow remained laminar. Loebbecke et al [11] investigated olympic level athletes swimming underwater using the dolphin kick. Swimming velocity is varied in the range of 1.12 and 1.85 which corresponded to a range of effort levels.…”

Section: Introductionmentioning

confidence: 99%

Drag force and jet propulsion investigation of a swimming squid

Tabatabaei

Olcay

Gökçen

et al. 2015

EPJ Web of Conferences

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Abstract. In this study, CAD model of a squid was obtained by taking computer tomography images of a real squid. The model later placed into a computational domain to calculate drag force and performance of jet propulsion. The drag study was performed on the CAD model so that drag force subjected to real squid was revealed at squid's different swimming speeds and comparison has been made with other underwater creatures (e.g., a dolphin, sea lion and penguin). The drag coefficient (referenced to total wetted surface area) of squid is 0.0042 at Reynolds number 1.6x106 that is a %4.5 difference from Gentoo penguin. Besides, jet flow of squid was simulated to observe the flow region generated in the 2D domain utilizing dynamic mesh method to mimic the movement of squid's mantle cavity.

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A comparison of the kinematics of the dolphin kick in humans and cetaceans

Cited by 46 publications

References 17 publications

Effects of different swimming race constraints on turning movements

Effects of different swimming race constraints on turning movements

Size does matter: The use of fish motion for improving human swimming simulations

Drag force and jet propulsion investigation of a swimming squid

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