The Relationship Between a Medial Heel Whip and the Free Moment in Distance Runners
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2013-08-20
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Abstract
Understanding the pathomechanics and aetiology of running-related injuries is multi-factorial. Increased torsional stress has been suggested as a factor related to overuse running injuries, therefore, we hypothesized that a medial heel whip (MHW) can serve as a surrogate to the summation of foot-ground torsional stress as measured by the free moment (FM) as well as measures of foot progression angle (FPA) and rearfoot eversion (RE). This study found no significant relationship between FPA, MWH and only a small relationship between RE and FM (r=0.28, p=0.01). However, in a separate study, we did find that the MHW can be reliably measured using visual assessment and that it is a valid measure compared to three-dimensional kinematic data. The intra-rater percentage of agreement was 83% and the inter-rater percentage of agreement was 65%. Future studies are necessary to evaluate the role of other strength, flexibility and alignment measures and to determine if a MHW contributes meaningful information to understanding the aetiology and clinical assessment of running-related injuries.
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Macdonald, S. (2013). The Relationship Between a Medial Heel Whip and the Free Moment in Distance Runners (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/28294