Kinematical Effects of a Mandibular Advancement Occlusal Splint on Running until Exhaustion at Severe Intensity.

Autor: Cardoso F; Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, and Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal., Costa MJ; Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, and Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal., Rios M; Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, and Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal., Vilas-Boas JP; Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, and Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal., Pinho JC; Faculty of Dental Medicine, University of Porto, 4200-393 Porto, Portugal.; Institute of Science and Innovation in Mechanical and Industrial Engineering, INEGI, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal., Pyne DB; Research Institute for Sport & Exercise, University of Canberra, Canberra 2617, Australia., Fernandes RJ; Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, and Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal.
Jazyk: angličtina
Zdroj: Sensors (Basel, Switzerland) [Sensors (Basel)] 2024 Sep 18; Vol. 24 (18). Date of Electronic Publication: 2024 Sep 18.
DOI: 10.3390/s24186032
Abstrakt: The effects of occlusal splints on sport performance have already been studied, although their biomechanical impacts are often overlooked. We investigated the kinematical changes during running until exhaustion at severe intensity while wearing a mandibular advancement occlusal splint. Twelve trained runners completed (i) an incremental protocol on a track to determine their velocity corresponding to maximal oxygen uptake and (ii) two trials of square wave transition exercises at their velocity corresponding to maximal oxygen until exhaustion, wearing two occlusal splints (without and with mandibular advancement). Running kinematics were compared within laps performed during the square wave transition exercises and between splint conditions. The mandibular advancement occlusal splint increased the running distance covered (~1663 ± 402 vs. 1540 ± 397 m, p = 0.03), along with a noticeable lap effect in decreasing stride frequency ( p = 0.04) and increasing stride length ( p = 0.03) and duty factor ( p < 0.001). No spatiotemporal differences were observed between splints, except for improved balance foot contact times in the mandibular advancement condition. An increased knee flexion angle at initial contact ( p = 0.017) was noted along laps in the non-advancement condition, despite the fact that no differences between splints were found. Running patterns mainly shifted within laps rather than between conditions, indicating that a mandibular advancement occlusal splint had a trivial kinematical effect.
Databáze: MEDLINE
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