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Limited time between the beginning and the end of the inclusions, only 7 high level rowers available within the time compatible with research realization
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Monocentric, prospective, randomized, open-label, cross-over study.
Current literature data suggest that dental occlusion has an influence on postural control in the general population, and more markedly in high-level athletes. The link between dental occlusion and the postural stability of top athletes has been studied in several disciplines such as basketball, shooting, golf and running. There is currently no data in the field of rowing. But this sport requires optimal postural control for synchronous and symmetrical muscle solicitation.
The present study aims to evaluate the influence of dental occlusion on postural stability and the performance of high level rowers.
Our assumptions are as follows:
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Rowing training session | Other | Power tests, balance and tonicity tests are performed eyes opened and eyes closed :
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| with artificial occlusal disturbance | Device | A silicon artificial occlusal disturbance is made from a mould of the rowers mouth and placed in the mouth during the training session. With artificial occlusal disturbance : Maximal Intercuspal Occlusion (MIO) with silicone splint increases the vertical dimension of occlusion of 1, 2 and 4 mm. |
| Measure | Description | Time Frame |
|---|---|---|
| Muscular power | Muscular power (in Watts) developed by the high level rowers with the "leg press" test on a "Dyno concept 2" machine, with and without artificial occlusal disturbance. Each test lasts 30 seconds. The sequence consists in 2 tests and is performed twice with a resting period of 1 min between each recording. | At the time of inclusion |
| Measure | Description | Time Frame |
|---|---|---|
| Surface of the pressure center of the rower's feet | Each test lasts 51.2 seconds. The sequence consists in 10 tests and is performed twice with a resting period of 1 min between each recording. During each test, the projected sway area (in mm², the area of the confidence ellipse containing 90% of the sampled positions of the foot pressure center on the statokinesigram) is extracted from the stabilometric platform |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Xavier MD RAVALEC | Rennes University Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CREPS de Wattignies | Wattignies | Hauts-de-France | 59139 | France |
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| ID | Term |
|---|---|
| D003769 | Dental Occlusion, Traumatic |
| ID | Term |
|---|---|
| D008310 | Malocclusion |
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
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Prospective, monocentric, randomized, open-label, cross-over study. Randomization applies on the order of the training sessions "with" or "without" occlusal disturbance.
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| without artificial occlusal disturbance | Device | The training session is performed without occlusal disturbance |
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| At the time of inclusion |
| Velocity of the pressure center of the rower's feet | Each test lasts 51.2 seconds. The sequence consists in 10 tests and is performed twice with a resting period of 1 min between each recording. During each test, the sway velocity (in mm/s) is calculated as the speed of displacement of the center of pressure of the foot as a function of the average position on the antero-posterior axis of the statokinesigram. | At the time of inclusion |
| Tonicity of the para-vertebral muscles | Tonicity of the para-vertebral muscles is evaluated with the postural test of Posterior-superior iliac spines (PSIS) with and without artificial occlusal disturbance. This PSIS test is performed eyes opened, in MIO position with and without artificial occlusal disturbance, The sequence of two tests is performed twice. During this test, the endpoint is qualitative: operator asymmetric thumbs' ascension reflecting asymmetric contraction of paravertebral muscles (abnormal response) or not (normal response). | At the time of inclusion |