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Cardoso F, Monteiro AS, Vilas-Boas JP, Pinho JC, Pyne DB, Fernandes RJ. Effects of Wearing a 50% Lower Jaw Advancement Splint on Biophysical and Perceptual Responses at Low to Severe Running Intensities. Life (Basel) 2022; 12:life12020253. [PMID: 35207540 PMCID: PMC8875792 DOI: 10.3390/life12020253] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/05/2022] [Accepted: 02/06/2022] [Indexed: 11/16/2022] Open
Abstract
Acute ergogenic effects of wearing occlusal splints have been reported for aerobic and anaerobic exercises, but the literature centered on performance improvement by using jaw repositioning splints is scarce. We aimed to analyze the effect of wearing a 50% lower jaw advancement splint on biophysical and perceptual responses at low to severe running intensities. Sixteen middle- and long-distance runners performed twice a 7 × 800 m intermittent running protocol (with 1 km·h−1 increments and 30 s rest periods) in an outdoor track field using two lower intraoral splints (a placebo and a lower jaw advancer). These devices were custom manufactured for each participant and a randomized and repeated measure design was used to compare conditions. No differences between placebo and lower jaw advancer were found (e.g., 52.1 ± 9.9 vs. 53.9 ± 10.7 mL·kg−1·min−1 of oxygen uptake, 3.30 ± 0.44 vs. 3.29 ± 0.43 m of stride length and 16 ± 3 vs. 16 ± 2 Borg scores), but small effects were sometimes observed (e.g., 109.2 ± 22.5 vs. 112.7 ± 25.2 L·min−1 of ventilation, ES = −0.42). Therefore, this jaw advancement splint had no substantial ergogenic effect on biophysical and perceptual responses when running at different intensities.
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Affiliation(s)
- Filipa Cardoso
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal; (A.S.M.); (J.P.V.-B.); (R.J.F.)
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Correspondence:
| | - Ana S. Monteiro
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal; (A.S.M.); (J.P.V.-B.); (R.J.F.)
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - João Paulo Vilas-Boas
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal; (A.S.M.); (J.P.V.-B.); (R.J.F.)
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - João Carlos Pinho
- 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
| | - David B. Pyne
- Research Institute for Sport & Exercise, University of Canberra, Canberra 2617, Australia;
| | - Ricardo J. Fernandes
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal; (A.S.M.); (J.P.V.-B.); (R.J.F.)
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
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Abstract
BDJ Open is the open access sister journal to the British Dental Journal, and this paper aims to explore the various different articles that BDJ Open has published between 2019 and 2020, in order to highlight which areas authors felt were important to publish open access. Furthermore, this article will investigate the advantages of open access publishing to both authors and readers, as well as the scientific community in general, and will examine how open access publishing has allowed the BDJ Portfolio to publish a wide range of research, both in terms of topic and geography. Examines papers published in BDJ Open between 2019 and 2020 to highlight which areas researchers felt were important to publish open access. Discusses the advantages of open access publishing to authors, readers and the scientific community. Explores how open access publishing has allowed the BDJ Portfolio to publish a far wider range of research both geographically and subject-wise.
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