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External Forces During Actual Acceleration Across Transition Speed

Veerle Segers (UGent) , Peter Aerts (UGent) , Matthieu Lenoir (UGent) and Dirk De Clercq (UGent)
Author
Organization
Abstract
The purpose of this study was to examine the kinetics of the walk-to-run transition (WRT) and run-to-walk transition (RWT), when accelerating or decelerating across transition speed (a = 0.17 m.s(-2)). Nine women performed gait transitions on a 50-m-long walkway. Vertical ground reaction forces (GRFs) and the center of pressure (COP) were examined in the range from 3 steps before to 3 steps after transition in order to identify the possible occurrence of a transition process, in order to facilitate the actual realization of transition. The actual transition is realized in one step, during WRT and RWT. This transition step was characterized by an outlying vertical GRF and COP trajectory (deviating from walking and running). Despite this clear discontinuity, a transitional adaptation period (process) appeared in both transitions. In the WRT, transition was prepared and kinetic adaptations were found in the last step before transition. The RWT was pre- and "post"-pared and only completed during the first walking step after transition. Thus, the WRT and RWT are two distinct phenomena, with different kinetics.
Keywords
Pressure Distribution, Gait Transition, Human Locomotion, Center-Of-Mass, biomechanics, running, walking, gait transition, ground reaction forces, center of pressure, Changing Speed, Walking, Biomechanics, System

Citation

Please use this url to cite or link to this publication:

MLA
Segers, Veerle et al. “External Forces During Actual Acceleration Across Transition Speed.” JOURNAL OF APPLIED BIOMECHANICS 24.4 (2008): 340–350. Print.
APA
Segers, V., Aerts, P., Lenoir, M., & De Clercq, D. (2008). External Forces During Actual Acceleration Across Transition Speed. JOURNAL OF APPLIED BIOMECHANICS, 24(4), 340–350.
Chicago author-date
Segers, Veerle, Peter Aerts, Matthieu Lenoir, and Dirk De Clercq. 2008. “External Forces During Actual Acceleration Across Transition Speed.” Journal of Applied Biomechanics 24 (4): 340–350.
Chicago author-date (all authors)
Segers, Veerle, Peter Aerts, Matthieu Lenoir, and Dirk De Clercq. 2008. “External Forces During Actual Acceleration Across Transition Speed.” Journal of Applied Biomechanics 24 (4): 340–350.
Vancouver
1.
Segers V, Aerts P, Lenoir M, De Clercq D. External Forces During Actual Acceleration Across Transition Speed. JOURNAL OF APPLIED BIOMECHANICS. 1607 N MARKET ST, PO BOX 5076, CHAMPAIGN, IL 61820-2200 USA: HUMAN KINETICS PUBL INC; 2008;24(4):340–50.
IEEE
[1]
V. Segers, P. Aerts, M. Lenoir, and D. De Clercq, “External Forces During Actual Acceleration Across Transition Speed,” JOURNAL OF APPLIED BIOMECHANICS, vol. 24, no. 4, pp. 340–350, 2008.
@article{681986,
  abstract     = {The purpose of this study was to examine the kinetics of the walk-to-run transition (WRT) and run-to-walk transition (RWT), when accelerating or decelerating across transition speed (a = 0.17 m.s(-2)). Nine women performed gait transitions on a 50-m-long walkway. Vertical ground reaction forces (GRFs) and the center of pressure (COP) were examined in the range from 3 steps before to 3 steps after transition in order to identify the possible occurrence of a transition process, in order to facilitate the actual realization of transition. The actual transition is realized in one step, during WRT and RWT. This transition step was characterized by an outlying vertical GRF and COP trajectory (deviating from walking and running). Despite this clear discontinuity, a transitional adaptation period (process) appeared in both transitions. In the WRT, transition was prepared and kinetic adaptations were found in the last step before transition. The RWT was pre- and "post"-pared and only completed during the first walking step after transition. Thus, the WRT and RWT are two distinct phenomena, with different kinetics.},
  author       = {Segers, Veerle and Aerts, Peter and Lenoir, Matthieu and De Clercq, Dirk},
  issn         = {1065-8483},
  journal      = {JOURNAL OF APPLIED BIOMECHANICS},
  keywords     = {Pressure Distribution,Gait Transition,Human Locomotion,Center-Of-Mass,biomechanics,running,walking,gait transition,ground reaction forces,center of pressure,Changing Speed,Walking,Biomechanics,System},
  language     = {eng},
  number       = {4},
  pages        = {340--350},
  publisher    = {HUMAN KINETICS PUBL INC},
  title        = {External Forces During Actual Acceleration Across Transition Speed},
  volume       = {24},
  year         = {2008},
}

Web of Science
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