Three dimensional musculoskeletal modelling of the abdominal crunch resistance training exercise

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dc.contributor.author Nolte, Kim
dc.contributor.author Kruger, P.E. (Pieter Ernst)
dc.contributor.author Els, P.S. (Pieter Schalk)
dc.contributor.author Nolte, Heinrich Wilhelm
dc.date.accessioned 2012-12-13T06:30:17Z
dc.date.available 2014-04-30T00:20:06Z
dc.date.issued 2013
dc.description.abstract The aim of this study was to evaluate the benefits and limitations of using three dimensional (3D) musculoskeletal modelling (LifeModelerTM) in assessing the safety and efficacy of exercising on an abdominal crunch resistance training machine. Three anthropometric cases were studied, representing a 5th percentile female, 50th percentile and 95th percentile male. Results indicated that the LifeModelerTM default model was capable of solving the forward dynamics simulations without adjustments. The modelling was able to indicate high risk for back injury when performing the abdominal crunch exercise as a result of the unacceptable intervertebral joint loading that occurs during the exercise. Individuals with small anthropometric dimensions such as some females and children cannot be accommodated suitably on the abdominal crunch machine which negatively impacts exercise posture and technique. Hip flexor muscle contribution in the execution of the exercise for the 5th percentile female was substantial thus reducing the efficacy of the exercise in isolating the abdominal muscles. en_US
dc.description.uri http://www.tandfonline.com/loi/rjsp20 en_US
dc.identifier.citation Kim Nolte , Pieter E. Krüger , P. Schalk Els & Heinrich Nolte (2013) Three dimensional musculoskeletal modelling of the abdominal crunch resistance training exercise, Journal of Sports Sciences, 31:3, 264-275, DOI: 10.1080/02640414.2012.729077 en_US
dc.identifier.issn 0264-0414 (print)
dc.identifier.issn 1466-447X (online)
dc.identifier.other 10.1080/02640414.2012.729077
dc.identifier.uri http://hdl.handle.net/2263/20807
dc.language.iso en en_US
dc.publisher Routledge en_US
dc.rights © 2013 Taylor & Francis. This is an electronic version of an article published in Journal of Sports Sciences, vol.31, no. 3, pp. 264-275, 2013. doi : 10.1080/02640414.2012.729077 Journal of Sports Sciences is available online at : http://www.tandfonline.com/loi/rjsp20 en_US
dc.subject Resistance training equipment en_US
dc.subject Abdominal crunch en_US
dc.subject LifemodelerTM en_US
dc.subject Inverse dynamics en_US
dc.subject Forward dynamics en_US
dc.title Three dimensional musculoskeletal modelling of the abdominal crunch resistance training exercise en_US
dc.type Postprint Article en_US


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