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Thomas Haugen, Jørgen Danielsen, Leif Olav Alnes, David McGhie, Øyvind Sandbakk and Gertjan Ettema

G , Dorel S , Slawinski J , et al . Sprint mechanics in world-class athletes: a new insight into the limits of human locomotion . Scand J Med Sci Sports . 2015 ; 25 : 583 – 594 . PubMed doi:10.1111/sms.12389 10.1111/sms.12389 25640466 4. Bradshaw EJ , Maulder PS , Keogh JW

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Simone Ciacci, Rocco Di Michele, Silvia Fantozzi and Franco Merni

Context:

Kinematic asymmetry is believed to be associated with elevated risk for muscle injury, but little is known about the links between hamstring injuries and asymmetry of sprinting mechanics.

Objective:

To evaluate the value of kinematic analysis of sprinting for the detection of injury-related asymmetry in athletes with a history of hamstring strain.

Participants:

Six sub-elite male sprinters, including two who sustained a hamstring strain injury.

Outcome Measures:

Absolute differences between left and right symmetry indices and symmetry angles were both calculated for ground contact time and selected angular displacements. Measurements were acquired at foot strike, during the stance phase, and at toe-off.

Results:

At toe-off, injured athletes exhibited greater knee flexion and less hip extension for the injured extremity compared to the uninjured extremity. Symmetry indices for these variables markedly exceeded an established 15% threshold for clinically relevant asymmetry. Each of the uninjured athletes exhibited a high degree of symmetry for all parameters, with mean values for symmetry indices significantly lower than the 15% threshold (P < 0.05).

Conclusions:

Kinematic analysis of sprinting asymmetry appears to be valuable for identification of elevated risk for hamstring injury.

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Scott R. Brown, Erin R. Feldman, Matt R. Cross, Eric R. Helms, Bruno Marrier, Pierre Samozino and Jean-Benoît Morin

, Cross MR . Profiling sprint mechanics by leg preference and position in rugby union athletes . Int J Sports Med . 2016 ; 37 : 890 – 897 . PubMed doi:10.1055/s-0042-109067 27410766 10.1055/s-0042-109067 11. Zifchock RA , Davis I , Higginson J , Royer T . The symmetry angle: a novel

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Reed D. Gurchiek, Hasthika S. Rupasinghe Arachchige Don, Lasanthi C. R. Pelawa Watagoda, Ryan S. McGinnis, Herman van Werkhoven, Alan R. Needle, Jeffrey M. McBride and Alan T. Arnholt

.1111/sms.12490 25996964 2. Setuain I , Lecumberri P , Ahtiainen JP , Mero AA , Häkkinen K , Izquierdo M . Sprint mechanics evaluation using inertial sensor-based technology: a laboratory validation study . Scand J Med Sci Sports . 2018 ; 28 ( 2 ): 463 – 472 . PubMed ID: 28685862 doi

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Jeffrey D. Simpson, Ludmila Cosio-Lima, Eric M. Scudamore, Eric K. O’Neal, Ethan M. Stewart, Brandon L. Miller, Harish Chander and Adam C. Knight

been shown to induce altered sprint kinematic patterns, 11 , 12 which could result in a negative transfer of sprint mechanics when the WV is removed and diminish sprint performance. 10 Conversely, recent investigations incorporating WV during daily living only have reported improvements in sprint and

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Gerda Strutzenberger, Adam Brazil, Timothy Exell, Hans von Lieres und Wilkau, John D. Davies, Steffen Willwacher, Johannes Funken, Ralf Müller, Kai Heinrich, Hermann Schwameder, Wolfgang Potthast and Gareth Irwin

International Society of Biomechanics in Sports. Beijing, China ; August 22–27, 2005 . https://ojs.ub.uni-konstanz.de/cpa/article/view/766/689 . Accessed June 18, 2018. 5. Rabita G , Dorel S , Slawinski J , et al . Sprint mechanics in world-class athletes: a new insight into the limits of human

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Johan Cassirame, Hervé Sanchez and Jean-Benoit Morin

( 5 ): 1991 – 1999 . PubMed ID: 11053354 doi:10.1152/jappl.2000.89.5.1991 11053354 10.1152/jappl.2000.89.5.1991 25. Rabita G , Dorel S , Slawinski J , et al . Sprint mechanics in world-class athletes: a new insight into the limits of human locomotion . Scand J Med Sci Sports . 2015 ; 25

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Ryu Nagahara, Mirai Mizutani, Akifumi Matsuo, Hiroaki Kanehisa and Tetsuo Fukunaga

acceleration . Can J Appl Sport Sci . 1984 ; 9 : 42 – 52 . PubMed 6705128 8. Rabita G , Dorel S , Slawinski J , et al . Sprint mechanics in world-class athletes: a new insight into the limits of human locomotion . Scand J Med Sci Sports . 2015 ; 25 : 583 – 594 . PubMed doi:10.1111/sms.12389 10

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Steffi L. Colyer, Keith A. Stokes, James L.J. Bilzon, Danny Holdcroft and Aki I.T. Salo

. 2012 ; 44 : 313 – 322 . PubMed doi:10.1249/MSS.0b013e31822d757a 10.1249/MSS.0b013e31822d757a 8. Rabita G , Dorel S , Slawinski J , et al . Sprint mechanics in world-class athletes: a new insight into the limits of human locomotion . Scand J Med Sci Sports . 2015 ; 25 : 583 – 594 . PubMed

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Brian J. McMorrow, Massimiliano Ditroilo and Brendan Egan

, Slawinski J , et al . Sprint mechanics in world-class athletes: a new insight into the limits of human locomotion. Scand J Med Sci Sports . 2015 ; 25 : 583 – 594 . PubMed ID: 25640466 doi:10.1111/sms.12389 25640466 10.1111/sms.12389 10. Hrysomallis C . The effectiveness of resisted movement