Muscle synergies are shared across fundamental subtasks in complex movements of skateboarding.

Autor: Kaufmann P; Department of Biomechanics, Kinesiology and Computer Science in Sport, Centre for Sport Science and University Sports, University of Vienna, Auf der Schmelz 6a (USZ II), 1150, Vienna, Austria.; Neuromechanics Research Group, Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria., Zweier L; Department of Biomechanics, Kinesiology and Computer Science in Sport, Centre for Sport Science and University Sports, University of Vienna, Auf der Schmelz 6a (USZ II), 1150, Vienna, Austria.; Neuromechanics Research Group, Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria., Baca A; Department of Biomechanics, Kinesiology and Computer Science in Sport, Centre for Sport Science and University Sports, University of Vienna, Auf der Schmelz 6a (USZ II), 1150, Vienna, Austria., Kainz H; Department of Biomechanics, Kinesiology and Computer Science in Sport, Centre for Sport Science and University Sports, University of Vienna, Auf der Schmelz 6a (USZ II), 1150, Vienna, Austria. hans.kainz@univie.ac.at.; Neuromechanics Research Group, Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria. hans.kainz@univie.ac.at.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Jun 04; Vol. 14 (1), pp. 12860. Date of Electronic Publication: 2024 Jun 04.
DOI: 10.1038/s41598-024-63640-5
Abstrakt: A common theory of motor control posits that movement is controlled by muscle synergies. However, the behavior of these synergies during highly complex movements remains largely unexplored. Skateboarding is a hardly researched sport that requires rapid motor control to perform tricks. The objectives of this study were to investigate three key areas: (i) whether motor complexity differs between skateboard tricks, (ii) the inter-participant variability in synergies, and (iii) whether synergies are shared between different tricks. Electromyography data from eight muscles per leg were collected from seven experienced skateboarders performing three different tricks (Ollie, Kickflip, 360°-flip). Synergies were extracted using non-negative matrix factorization. The number of synergies (NoS) was determined using two criteria based on the total variance accounted for (tVAF > 90% and adding an additional synergy does not increase tVAF > 1%). In summary: (i) NoS and tVAF did not significantly differ between tricks, indicating similar motor complexity. (ii) High inter-participant variability exists across participants, potentially caused by the low number of constraints given to perform the tricks. (iii) Shared synergies were observed in every comparison of two tricks. Furthermore, each participant exhibited at least one synergy vector, which corresponds to the fundamental 'jumping' task, that was shared through all three tricks.
(© 2024. The Author(s).)
Databáze: MEDLINE
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