Tibial acceleration alone is not a valid surrogate measure of tibial load in response to stride length manipulation  

作　　者：Jean Tu Olivia L.Bruce W.Brent Edwards 

机构地区：[1]Human Performance Laboratory,Faculty of Kinesiology,University of Calgary,Calgary T2N 1N4,Canada [2]McCaig Institute for Bone and Joint Health,University of Calgary,Calgary T2N 4Z6,Canada [3]Department of Radiology,Stanford University,Stanford,CA 94305-2004,USA [4]Department of Biomedical Engineering,University of Calgary,Calgary T2N 1N4,Canada

出　　处：《Journal of Sport and Health Science》2025年第2期46-53,共8页运动与健康科学(英文)

基　　金：funded in part by the Natural Sciences and Engineering Research Council of Canada(RGPIN 024042021 and CGS D-534891-2019);the NSERC CREATE Wearable Technology Research and Collaboration training program(graduate fellowship and undergraduate summer research fellowship).

摘　　要：Purpose:This study aimed to evaluate the relationship between peak tibial acceleration and peak ankle joint contact forces in response to stride length manipulation during level-ground running.Methods:Twenty-seven physically active participants ran 10 trials at preferred speed in each of 5 stride length conditions:preferred,±5%,and±10%of preferred stride length.Motion capture,force platform,and tibial acceleration data were directly measured,and ankle joint contact forces were estimated using an inverse-dynamics-based static optimization routine.Results:In general,peak axial tibial accelerations(p<0.001)as well as axial(p<0.001)and resultant(p<0.001)ankle joint contact forces increased with stride length.When averaged within the 10 strides of each stride condition,moderate positive correlations were observed between peak axial acceleration and joint contact force(r=0.49)as well as peak resultant acceleration and joint contact force(r=0.51).However,37%of participants illustrated either no relationship or negative correlations.Only weak correlations across participants existed between peak axial acceleration and joint contact force(r=0.12)as well as peak resultant acceleration and ankle joint contact force(r=0.18)when examined on a step-by-step basis.Conclusion:These results suggest that tibial acceleration should not be used as a surrogate for ankle joint contact force on a step-by-step basis in response to stride length manipulations during level-ground running.A 10-step averaged tibial acceleration metric may be useful for some runners,but an initial laboratory assessment would be required to identify these individuals.

关 键 词：Wearable sensors Running Joint kinetics Lower extremity Gait manipulation 

分 类 号：G804.2[文化科学—运动人体科学]