Author:
Ogawa Tetsuya,Obata Hiroki,Yokoyama Hikaru,Kawashima Noritaka,Nakazawa Kimitaka
Abstract
AbstractWalking with pulling force fields acting at the body center of mass (in the forward or backward directions) is compatible with inclined walking and is used in clinical practice for gait training. From the perspective of known differences in the motor strategies that underlie walking with the respective force fields, the present study elucidated whether the adaptation acquired by walking on a split-belt treadmill with either one of the force fields affects subsequent walking in a force field in the opposite directions. Walking with the force field induced an adaptive and de-adaptive behavior of the subjects, with the aspect evident in the braking and propulsive impulses of the ground reaction force (difference in the peak value between the left and right sides for each stride cycle) as parameters. In the parameters, the adaptation acquired during walking with a force field acting in one direction was transferred to that in the opposite direction only partially. Furthermore, the adaptation that occurred while walking in a force field in one direction was rarely washed out by subsequent walking in a force field in the opposite direction and thus was maintained independently of the other. These results demonstrated possible independence in the neural functional networks capable of controlling walking in each movement task with an opposing force field.
Publisher
Springer Science and Business Media LLC
Reference26 articles.
1. Choi, J. T. & Bastian, A. J. Adaptation reveals independent control networks for human walking. Nat. Neurosci. 10, 1055–1062 (2007).
2. Vasudevan, E. V. & Bastian, A. J. Split-belt treadmill adaptation shows different functional networks for fast and slow human walking. J. Neurophysiol. 103, 183–191 (2010).
3. Ogawa, T., Kawashima, N., Ogata, T. & Nakazawa, K. Limited transfer of newly acquired movement patterns across walking and running in humans. PLoS ONE 7, e46349 (2012).
4. Ogawa, T., Kawashima, N., Obata, H., Kanosue, K. & Nakazawa, K. Mode-dependent control of human walking and running as revealed by split-belt locomotor adaptation. J. Exp. Biol. 218, 3192–3198 (2015).
5. Ogawa, T., Obata, H., Yokoyama, H., Kawashima, N. & Nakazawa, K. Velocity-dependent transfer of adaptation in human running as revealed by split-belt treadmill adaptation. Exp. Brain Res. 236, 1019–1029 (2018).