Mechanics of overground accelerated running vs. running on an accelerated treadmill |
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| Authors: | Ine Van Caekenberghe Veerle Segers Patrick Willems Thierry Gosseye Peter Aerts Dirk De Clercq |
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| Affiliation: | 1. Ghent University, Department of Movement and Sports Sciences, Watersportlaan 2, 9000 Ghent, Belgium;2. Université Catholique de Louvain, Institute of Neurosciences: Physiology and Biomechanics of Locomotion, Place Pierre de Coubertin, 1-2, 1348 Louvain-La-Neuve, Belgium;3. University of Antwerp, Department of Biology, Functional Morphology, Belgium;1. Department of Physical Therapy, Graduate School of Medicine, Nagoya University, Japan;2. Japan Society for the Promotion of Science, Japan;1. Division of Movement Disorders, Great Lakes NeuroTechnologies Inc., 10055 Sweet Valley Drive, Cleveland, OH 44125, USA;2. Movement Disorders Center, Neurological Institute, University Hospitals and Case Western Reserve University School of Medicine, 1611 South Green Road Suite 204, South Euclid, OH 44121, USA;1. Department of Physiotherapy, La Trobe University, Australia;2. Department of Rural Human Biosciences, La Trobe University, Australia;1. Nebraska Biomechanics Core Facility, University of Nebraska at Omaha, Omaha, NE, USA;2. College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA;1. Movement to Health Laboratory, Montpellier-1 University, EuroMov, Montpellier, France;2. Department of Geriatrics, University Hospital of Montpellier, France;1. Department of Physical Therapy, Central Michigan University, Mt. Pleasant, MI, USA;2. School of Engineering and Technology, Central Michigan University, Mt. Pleasant, MI, USA |
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| Abstract: | Unsteady state gait involving net accelerations has been studied overground and on a treadmill. Yet it has never been tested if and to what extent both set-ups are mechanically equal.This study documents the differences in ground reaction forces for accelerated running on an instrumented runway and running on an accelerating treadmill by building a theoretical framework which is experimentally put to the test.It is demonstrated that, in contrast to overground, no mean fore-after force impulse should be generated to follow an accelerating treadmill due to the absence of linear whole body acceleration. Accordingly, the adaptations in the braking phase (less braking) and propulsive phase (more propulsion) to accelerate overground are not present to follow an accelerating treadmill.It can be concluded that running on an accelerating treadmill is mechanically different from accelerated running overground. |
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