Huisinga, M.R. (2016) The interlimb velocity ratio, rather than the velocity difference, is the temporal relation that is learned during split-belt adaptation. thesis, Human Movement Sciences.
Full text available on request.Abstract
Background: Walking on a split-belt treadmill, of which the velocity of two seperate belts can be controlled independently, results in locomotor adaptation. After return to tied-belts, after-effects are typically observed. In order to gain a deeper understanding in the generalization of the split-belt adaptation to other velocity relations of the belts, it is critical to know which temporal relation is learned during walking on a split-belt treadmill. Aim: The aim of the present study is to investigate which temporal relation (i.e. interlimb velocity ratio or velocity difference) is learned during split-belt adaptation. Methods: Twelve healthy participants walked on the split-belt treadmill with the left belt set at 1.4 m/s and the right belt at 0.7 m/s. After they adapted to split-belt walking, different types of catch trials were presented in order to test the generalization to different velocity relations. The different types of catch trials were characterized by (i) the same velocity ratio between the belts, (ii) the same velocity difference or (iii) a change in velocity of the left belt. A step length and swing time symmetry index were used to assess gait symmetry. Results: Maintaining the velocity ratio, rather than the velocity difference, between the belts resulted in the smallest change in the symmetry indices compared to the steps prior to the catch trial. The results of the last type of catch trial (i.e. a change in velocity of the left belt) showed that the more the velocity difference between the belts deviates from the velocity difference at which is trained, the higher the change in the symmetry indices compared to the steps prior to the catch trial. Conclusion: Split-belt adaptation is partly specific to the velocity difference at which is trained, but a major part of what is learned during split-belt adaptation is related to the interlimb velocity ratio.
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Otter, dr. A.R. den |
| Faculty: | Medical Sciences |
| Date Deposited: | 22 Apr 2022 14:44 |
| Last Modified: | 22 Apr 2022 14:44 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3149 |
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