Biomechanical Relationship Between Trunk Flexion and Mouth Opening: Pilot Study

NCT ID: NCT06188897

Last Updated: 2024-01-03

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 60 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-02-01
• Study Completion Date: 2023-02-15

Brief Summary

The aim of the present study is to analyze if there is a biomechanical relationship between trunk flexion and buccal opening and to observe if there is an improvement of trunk flexion by performing the "sit and reach" test when stretching the masticatory muscles.

Detailed Description

The study design is made up of a double-blind clinical trial with 60 participants randomly divided into two groups of 30 people each (Treatment group and Control group). Basal measurements of the mouth opening were taken with a vernier caliper and the trunk flexion measurements were taken by means of the "sit and reach" test. These measurements were carried out again after the intervention, which consisted of self-stretching of the masticatory muscles for the Treatment group and an occlusion of the mouth for the Control group. In the results there was an increase in the trunk flexion compared to the initial values in both groups (Treatment group 2.8 (1.51), Control group 1.97 (2.31) and this increase was greater in the Treatment group even though the difference with the Control group was not statistically significant. Therefore, the stretching of the masticatory muscles does not cause an immediate increase in the degree of trunk flexion measured by the "sit and reach" test. As a consequence, we cannot confirm the existence of a biomechanical relationship between trunk flexion and mouth opening.

Conditions

Hamstring Injury; Temporomandibular Joint Disorders; Stretch

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Experimental group

The experimental group did the intervention, which consisted of self-stretching of the masticatory muscles. This stretch consisted of introducing three knuckles of the non-dominant hand between the incisors for two minutes while sitting

Group Type: EXPERIMENTAL

Self-stretching of the masticatory musculature

Intervention Type: OTHER

If the subject belonged to the Treatment group, he was instructed to self-stretch the masticatory muscle.

This stretch consisted of introducing three knuckles of the non-dominant hand between the incisors for two minutes while sitting.

Control group

The control group was asked to introduce only two knuckles in the oral cavity and perform a mandibular occlusion, an intervention that serves as a simulated stretch in said group.

Group Type: PLACEBO_COMPARATOR

Control group intervention

Intervention Type: OTHER

The control group was asked to introduce only two knuckles in the oral cavity and perform a mandibular occlusion, an intervention that serves as a simulated stretch in said group.

Interventions

Self-stretching of the masticatory musculature

If the subject belonged to the Treatment group, he was instructed to self-stretch the masticatory muscle.

This stretch consisted of introducing three knuckles of the non-dominant hand between the incisors for two minutes while sitting.

Intervention Type: OTHER

Control group intervention

The control group was asked to introduce only two knuckles in the oral cavity and perform a mandibular occlusion, an intervention that serves as a simulated stretch in said group.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

1. Being between 18 and 26 years old (both included).

2. Having signed the consent form.

3. Being able to introduce three knuckles of the non-dominant hand between the incisors.

Exclusion Criteria

1. Having a musculoskeletal injury in the lower extremity and / or in the jaw.

2. Being in the process of receiving physiotherapy treatment and / or having undergone any odontologic or maxillofacial surgery in the last month.

3. Having suffered dislocations, painful clicks or being diagnosed with some type of temporomandibular joint (TMJ) dysfunction.

4. Having hypermobility in the temporomandibular joint (TMJ) that is, the measurement of the buccal opening being greater than 60 mm.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 26 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University Rovira i Virgili

OTHER

Sponsor Role: lead

Responsible Party

Laura Menés Fernández

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Laura Menés Fernández

Vilanova i la Geltrú, Barcelona, Spain

Countries

Spain

References

Espejo-Antunez L, Castro-Valenzuela E, Ribeiro F, Albornoz-Cabello M, Silva A, Rodriguez-Mansilla J. Immediate effects of hamstring stretching alone or combined with ischemic compression of the masseter muscle on hamstrings extensibility, active mouth opening and pain in athletes with temporomandibular dysfunction. J Bodyw Mov Ther. 2016 Jul;20(3):579-87. doi: 10.1016/j.jbmt.2015.12.012. Epub 2016 Jan 7.

Reference Type: BACKGROUND

PMID: 27634081 (View on PubMed)

Rodriguez-Blanco C, Cocera-Morata FM, Heredia-Rizo AM, Ricard F, Almazan-Campos G, Oliva-Pascual-Vaca A. Immediate Effects of Combining Local Techniques in the Craniomandibular Area and Hamstring Muscle Stretching in Subjects with Temporomandibular Disorders: A Randomized Controlled Study. J Altern Complement Med. 2015 Aug;21(8):451-9. doi: 10.1089/acm.2014.0332. Epub 2015 Jun 2.

Reference Type: BACKGROUND

PMID: 26218883 (View on PubMed)

Other Identifiers

23/2016

Identifier Type: -

Identifier Source: org_study_id