The number of strides required for treadmill running gait analysis is unaffected by either speed or run duration |
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| Institution: | 1. Department of Physical Therapy, Ithaca College, 953 Danby Rd, Ithaca, NY 14850, USA;2. Department of Health and Human Performance, Texas State University, San Marcos, TX 78666, USA;3. Athletic Training and Kinesiology, Oregon State University, Corvallis, OR 97331, USA;4. Pediatric Orthopaedic Associates, 6 Executive Park Dr NE #10, Atlanta, GA 30329, USA;5. Department of Kinesiology, University of Georgia, Athens, GA 30602, USA;1. Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK;2. Sport and Physical Activity Research Centre, Sheffield Hallam University, Sheffield, UK;3. Biomechanics, English Institute of Sport, Manchester, UK;4. BAE Systems Digital, Manchester, UK;5. Sport and Exercise Sciences, University of Chester, Chester, UK;6. College of Health, Wellbeing and Life Sciences, Sheffield Hallam University, Sheffield, UK;1. College of Public Health and Human Sciences, Program in Kinesiology, Oregon State University-Cascades, Bend, OR, USA;2. Department of Human Physiology, University of Oregon, Eugene, OR, USA;3. Department of Physical Education, National Tsing Hua University, Hsinchu, Taiwan, ROC;1. Sheffield Hallam University, Sheffield S10 2BP, UK;2. The University of Fraser Valley, Abbotsford, BC, Canada;1. Universidad Pablo de Olavide, Physical Performance & Sports Research, Seville, Spain;2. Department of Sport, CEU San Pablo University, Spain;3. Biomechanics Research Unit, University of Limerick, Limerick, Ireland;4. Running Injury Clinic, Calgary, Canada;5. University of Calgary, Calgary, Canada |
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| Abstract: | Participation in running events has increased recently, with a concomitant increase in the rate of running related injuries (RRI). Mechanical overload is thought to be a primary cause of RRI, it is often detected using motion analysis to examine running mechanics during either overground or treadmill running. In treadmill running, no clear consensus for the number of strides required to establish stable kinematic data exists. The aim of this study was to establish the number of strides needed for stable data when analysing gait kinematics in the stance phase of treadmill running. Twenty healthy, masters age group, club runners completed a high intensity interval training run (HIIT) and an energy-expenditure matched medium intensity continuous run (MICR). Thirty consecutive strides at start and end of each run were identified. Sequential averaging was employed to determine the number of strides required to establish a stable value. No significant differences existed in the number of strides required to achieve stable values. Twenty consecutive strides are required to be 95% confident stable values exist for maximum angle, angle at initial foot contact, and range of motion at the ankle, knee, and hip joints variables at the ankle, knee, and hip joints, in all three planes of motion, and spatiotemporal regardless of running speed and time of capture. |
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| Keywords: | Biomechanics Motion analysis Kinematics Gait |
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