Jaw Clenching on Anaerobic Ability and Ventilatory Flows
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|ClinicalTrials.gov Identifier: NCT02529020|
Recruitment Status : Completed
First Posted : August 19, 2015
Last Update Posted : August 19, 2015
|Condition or disease||Intervention/treatment||Phase|
|Mouth Breathing||Device: Mouthguard Device: No mouthguard||Not Applicable|
The objectives of this study are to investigate the acute effects of a customized, bite-aligning mouthpiece on the different parameters assessed during a Wingate Test, as compared to clenching the jaw without a mouthpiece, in a physically-active, male population. The study also investigate the influence of wearing a mouthpiece on non-forced and forced airflow dynamics, as compared to open mouth and a jaw clenching without mouthpiece. Mouthpieces are made using a new scanning method that simplified the fitting process and lowered its cost.
A nonrandomized study was designed to compare the effect of the occlusion condition on the anaerobic power and airflow dynamics. Conditions of wearing or not wearing mouthguard (MOUTHG and NO-MOUTHG, respectively) are randomly distributed in all tests. Each subject participate in three sessions. The first session is used to obtain informed consent assess anthropometric measurements and to scan the subject's mouth structure. In the second session, subjects are familiarized with the test protocols via a learning session that included demonstration of Wingate Test and the airflow dynamics measurements. Subjects also perform the airflow tests and the first Wingate Test trial. In the third session, subjects perform the second Wingate Test trial. Conditions are randomly distributed in all tests. Wingate Test trials were separated by three days and subjects were not allowed to perform intensive training workloads.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||30 participants|
|Intervention Model:||Single Group Assignment|
|Primary Purpose:||Basic Science|
|Official Title:||Acute Effects of Jaw Clenching Using a Customized Mouthguard on Anaerobic Ability and Ventilatory Flows|
|Study Start Date :||May 2014|
|Actual Primary Completion Date :||July 2015|
|Actual Study Completion Date :||August 2015|
All subjects perform all tests wearing mouthguard.
Condition of wearing mouthguard
Experimental: No mouthguard
All subjects perform all tests without mouthguard
Device: No mouthguard
Condition without mouthguard
- Changes in performance in Wingate test [ Time Frame: 3 trials spaced 48 hours (each trial 30 seconds) ]Anaerobic power and capacity are assessed using the Wingate test with and without mouthguard (MOUTHG and NO-MOUTHG, respectively). Subjects complete a 30-sec maximal effort on an ergometer at a resistance equivalent to 7.5% of their body mass. The ergometer is interfaced with a computer loaded with software (Wingate Software Version 1.11, Lode BV) that apply the appropriate load for each subject. As a warm-up procedure, subjects are instructed to begin pedaling for 5 minutes at 100 W and approximately 60 rpm. After a 5 second count down and without altering the mentioned parameters, subjects are asked to begin pedaling as fast as possible while receiving verbal encouragement throughout the test. Peak power (W) and mean power (W) are calculated and recorded in an online data acquisition system.
- Changes in performance dynamics airflow measurements. [ Time Frame: 3 trials spaced 3 minutes (each trial 30 seconds) ]Subjects are asked to breath at resting pace during 30-sec under three different conditions: open mouth without mouthguard, jaw clenching without mouthguard and jaw clenched with mouthguard (OMNM, JCNM and JCM, respectively). Subjects intercalate 30 second forced breathings under the same conditions. Rest time was 3 minutes after both measurements under each condition. Conditions are randomly distributed. Facemask and is connected to a Biopac MP100 system through the wide-range airflow transducer amplifier. Peak air flow is detected and mean air flow during the 30 second interval is calculated for all conditions in L•min-1.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02529020
|Study Chair:||Xavier Pujades, PHD||Vicedagà Facultat ciències de l'Esport Blanquerna|