TY - JOUR
T1 - Case Study
T2 - A Jaw-Protruding Dental Splint Improves Running Physiology and Kinematics
AU - Cardoso, Filipa
AU - Coelho, Eduardo P
AU - Gay, Ana
AU - Vilas-Boas, João Paulo
AU - Pinho, João C
AU - Pyne, David B
AU - Fernandes, Ricardo J
N1 - Funding Information:
The authors acknowledge the Portuguese Foundation for Science and Technology, I.P. (FCT) and the European Union for the PhD individual grant (2020.05012.BD) to the lead author.
Publisher Copyright:
© 2022 Human Kinetics, Inc.
PY - 2022/5/1
Y1 - 2022/5/1
N2 - Wearing an intraoral jaw-protruding splint could enhance respiratory function in clinical settings and eventually exercise performance.PURPOSE: The authors studied the acute effect of wearing a lower-jaw-forwarding splint at different protruding percentages (30% and 50%) across a wide range of running exercise intensities.METHODS: A case study was undertaken with a highly trained and experienced 27-year-old female triathlete. She performed the same incremental intermittent treadmill running protocol on 3 occasions wearing 3 different intraoral devices (30% and 50% maximum range and a control device) to assess running physiological and kinematic variables.RESULTS: Both the 30% and 50% protruding splints decreased oxygen uptake and carbon dioxide production (by 4%-12% and 1%-10%, respectively) and increased ventilation and respiratory frequency (by 7%-12% and 5%-16%, respectively) along the studied running intensities. Exercise energy expenditure (approximately 1%-14%) and cost (7.8, 7.4, and 8.0 J·kg-1·m-1 for 30%, 50%, and placebo devices, respectively) were also decreased when using the jaw-protruding splints. The triathlete's lower limbs' running pattern changed by wearing the forwarding splints, decreasing the contact time and stride length by approximately 4% and increasing the stride rate by approximately 4%.CONCLUSIONS: Wearing a jaw-protruding splint can have a positive biophysical effect on running-performance-related parameters.
AB - Wearing an intraoral jaw-protruding splint could enhance respiratory function in clinical settings and eventually exercise performance.PURPOSE: The authors studied the acute effect of wearing a lower-jaw-forwarding splint at different protruding percentages (30% and 50%) across a wide range of running exercise intensities.METHODS: A case study was undertaken with a highly trained and experienced 27-year-old female triathlete. She performed the same incremental intermittent treadmill running protocol on 3 occasions wearing 3 different intraoral devices (30% and 50% maximum range and a control device) to assess running physiological and kinematic variables.RESULTS: Both the 30% and 50% protruding splints decreased oxygen uptake and carbon dioxide production (by 4%-12% and 1%-10%, respectively) and increased ventilation and respiratory frequency (by 7%-12% and 5%-16%, respectively) along the studied running intensities. Exercise energy expenditure (approximately 1%-14%) and cost (7.8, 7.4, and 8.0 J·kg-1·m-1 for 30%, 50%, and placebo devices, respectively) were also decreased when using the jaw-protruding splints. The triathlete's lower limbs' running pattern changed by wearing the forwarding splints, decreasing the contact time and stride length by approximately 4% and increasing the stride rate by approximately 4%.CONCLUSIONS: Wearing a jaw-protruding splint can have a positive biophysical effect on running-performance-related parameters.
KW - jaw advancement
KW - occlusal splints
KW - respiratory work
KW - running economy
UR - https://www.scopus.com/pages/publications/85124428049
U2 - 10.1123/ijspp.2021-0338
DO - 10.1123/ijspp.2021-0338
M3 - Other Journal Article
C2 - 35130510
SN - 1555-0265
VL - 17
SP - 791
EP - 795
JO - International Journal of Sports Physiology and Performance
JF - International Journal of Sports Physiology and Performance
IS - 5
ER -