Tooren, J.F. (Jeroen) (2021) Aaaand row? A cross-correlation analysis on national level rowers to investigate synchronization of forces with or without mechanical coupling. thesis, Sport Sciences.
Full text available on request.Abstract
Introduction In human movement coordination is often achieved through synchronization of movement patterns. In rowing, synchronized movement patterns lead to higher performances. It was investigated whether mechanical coupling influences the synchronization of the forces that were exerted on the handles of the ergometers and leader-follower interactions between the rowers from a coupled oscillator perspective. Methods 16 pre-made pairs of national level rowers rowed in six different conditions: mechanically coupled versus non-mechanically coupled, at 20 or 30 strokes per minute and/or in an inphase or antiphase pattern. Cross-correlation analysis were performed on valid trials. Differences in mean peak force for each participant were analyzed in trials where coordinative breakdowns occurred. Results 11 pairs showed one or more coordinative breakdowns. These occurred in antiphase conditions, but were not affected by coupling or stroke rate. No significant differences in mean peak force in these trials were found. For the other five pairs, cross-correlations were found to be higher and less variable during mechanical coupling trials. Leader-follower changes were apparent in two of the 22 coordinative breakdown trials. Discussion The skill of the rowers most likely led to synchronization in most runs and leader-follower changes were negated. Similar results were found as in Cuijpers et al. (2019), from which the force data was obtained. Further research could be done on different forms of coupling, either by changing the strength of the coupling or the amount of sensory information available. Conclusion Mechanical coupling stabilized synchronization of forces exerted on the handles between the rowers, even more for antiphase rowing.
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Poel, dr. H.J. de |
| Faculty: | Medical Sciences |
| Date Deposited: | 16 May 2022 07:49 |
| Last Modified: | 16 May 2022 07:49 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3326 |
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