CC BY-NC-ND 4.0 · Sports Med Int Open 2020; 04(03): E77-E84
DOI: 10.1055/a-1286-5863
Orthopedics & Biomechanics

Fast Motion Speed Alters the Sit-to-Walk Spatial and Temporal Pattern in Healthy Young Men

Elissavet N. Rousanoglou
1   Department of Sport Medicine and Biology of Exercise, Sport Biomechanics Lab, School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Greece
,
Nikolaos Kondilopoulos
1   Department of Sport Medicine and Biology of Exercise, Sport Biomechanics Lab, School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Greece
,
Konstantinos D. Boudolos
1   Department of Sport Medicine and Biology of Exercise, Sport Biomechanics Lab, School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Greece
› Author Affiliations
Funding: 90% of the publication fee was granted by the National and Kapodistrian University of Athens, Greece.

Abstract

Sit-to-Walk (STW) is a critical task for daily independence, yet its two inherent destabilizing events (seat-off, walking initiation) may diminish postural stability under fast motion speed (FS). This study aimed at the FS effect on the STW spatial and temporal patterns, with a specific interest in the relative STW temporal pattern. The STW kinetics and kinematics were recorded (n=18 men, 20.7±2.0 years) at preferred and FS. Statistics included One-Way repeated measures ANOVA (SPSS 25.0, p≤0.05). The FS spatial pattern reveals a discontinuous mode of the forward ground reaction force, indicating a balance rather than a propulsive strategy during the Rising phase. The FS relative temporal pattern reveals the prolongation of the Leaning phase (most possibly due to the feet repositioning), the shortening of the Rising and the Walking phases, and a relative delay in the spatial variables (p≤0.05). Overall, the results do not allow the STW consideration at FS as a “magnified” with respect to force, or a “shrinked-in” with respect to time, copy of the preferred motion speed. As more generic and versatile than the absolute one, the relative temporal pattern may be used as a reference for a variety of populations.

Supporting Information



Publication History

Received: 23 July 2020

Accepted after revision: 07 October 2020

Article published online:
09 December 2020

© 2020. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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