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Classification of higher- and lower-mileage runners based on running kinematics

Journal of Sport and Health Science 2019年第3期8卷 249-257页

作者： Christian A.Clermont Angkoon Phinyomark Sean T.Osis Reed Ferber Faculty of Kinesiology University of Calgary Institute for Scientific Interchange (ISI )Foundation running Injury Clinic Faculty of Nursing University of Calgary

Background: running-related overuse injuries can result from the combination of extrinsic(e.g., running mileage) and intrinsic risk factors(e.g.,biomechanics and gender), but the relationship between these factors is not folly understood. Therefore, the first purpose of this study was to determine whether we could classify higher-and lower-mileage runners according to differences in lower extremity kinematics during the stance and swing phases of running gait. I he second purpose was to subgroup the runners by gender and determine whether we could classify higherand lower-mileage runners in male and female ***: Participants were allocated to the "higher-mileage" group(≥32 km/week; n= 41(30 females)) or to the "lower-mileage" group(≤25 km;n= 40(29 females)). Three-dimensional kinematic data were collected during 60 s of treadmill running at a self-selected speed(2.61 ± 0.23 m/s).A support vector machine classifier identified kinematic differences between higher-and lower-mileage groups based on principal component ***: Higher-and lower-mileage runners(both genders) could be separated with 92.59% classification accuracy. When subgrouping by gender,higher-and lower-mileage female runners could be separated with 89.83% classification accuracy, and higher-and lower-mileage male runners could be separated with 100% classification ***: These results demonstrate there are distinct kinematic differences between subgroups related to both mileage and gender, and that these factors need to be considered in future research.

关键词： Biomechanics Clinical biomechanics Gait analysis Kinematics Motion analysis:running mileage running subgroups

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