L3/L4 High Velocity Low Amplitude Technique Influence On Baropodometric Pressures In Healthy Young Adults

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-09-30

Study Completion Date

2024-12-31

Brief Summary

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In this double-blinded study, the objective is to determine the effects of bilateral High Velocity Low Amplitude (HVLA) technique on L3/L4 joint in baropodometric pressures in 60 healthy young adults.

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Detailed Description

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The postural control it´s a fundamental aspect to understand the human´s capacity to perform activities. These balance is controlled by several mechanisms such as the proprioceptive system of muscles and articulation joints.

It is known that the High Velocity Low Amplitude (HVLA) technique shows biomechanical and neurophysiologic effects.

By saying that, it is importance to understand the effects of the lumbar manipulation on body´s weight distribution. Therefore, there is going to be measure several variables such as center of pressure oscillation , plantar pressure distribution and plantar contact area using a pressure platform.

Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Each participant will pull from a bag within equally number of folded papers with letter A (Intervention Group) and letter B (Control Group) and it will be handled to the investigator.

The outcome assessors won´t also have any contact with the investigator and participant whilst intervention.

Study Groups

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HVLA L3/4 Group

In each participant, blind assessors will perform pre-intervention measurements of dislocation of center of pressure (CoP), plantar pressure mean and plantar contact area in a baropodometric pressure platform.

Next, the investigator will perform the HVLA technique in L3/L4 joint articulation.

Then, the same measurements before described will be repeated, by the assessors 1 minute after the intervention.

Group Type EXPERIMENTAL

HVLA L3/4

Intervention Type OTHER

The participant will be lateral decubitus and the investigator will locate the third lumbar vertebra. Then with one hand the investigator will contact the interspinous space underlying L3 and with the other hand he will take the top leg into flexion until the investigator feels tension in L3/L4 joint. Then he puls the tables´s arm until felling tension in the region to be manipulated. Afterwards the investigator will globally rotate the participant in the horizontal plane and will approach to the L3/L4 joint. With one arm the investigator will contact the deltopectoral groove and with the other one will contact the external iliac fossa. Finally, the investigator will compress and rotate the pelvis and will apply an impulse in a rapid rotation, without losing the parameters with a "body drop" allowed by the flexion of the knees and the contraction of the large pectorals.

Control Group

In each participant, blind assessors will perform pre-intervention measurements of dislocation of center of pressure (CoP), plantar pressure mean and plantar contact area in a baropodometric pressure platform.

Next, the investigator will perform a Sham technique. Then, the same measurements before described will be repeated, by the assessors 1 minute after the intervention.

Group Type SHAM_COMPARATOR

Sham

Intervention Type OTHER

The participant will be in lateral decubitus and the top leg and knee will be flexed until the foot reaches the popliteal region of the other leg. There won't be applied any tension in no structure. This intervention will be applied during 20 seconds each side.

Interventions

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HVLA L3/4

The participant will be lateral decubitus and the investigator will locate the third lumbar vertebra. Then with one hand the investigator will contact the interspinous space underlying L3 and with the other hand he will take the top leg into flexion until the investigator feels tension in L3/L4 joint. Then he puls the tables´s arm until felling tension in the region to be manipulated. Afterwards the investigator will globally rotate the participant in the horizontal plane and will approach to the L3/L4 joint. With one arm the investigator will contact the deltopectoral groove and with the other one will contact the external iliac fossa. Finally, the investigator will compress and rotate the pelvis and will apply an impulse in a rapid rotation, without losing the parameters with a "body drop" allowed by the flexion of the knees and the contraction of the large pectorals.

Intervention Type OTHER

Sham

The participant will be in lateral decubitus and the top leg and knee will be flexed until the foot reaches the popliteal region of the other leg. There won't be applied any tension in no structure. This intervention will be applied during 20 seconds each side.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Individuals aged between 18-25 years old;
* Individuals with BMI between 18,5 and 24,9 kg/m2

Exclusion Criteria

* Pregnancy;
* With the follow conditions: lumbar discal hernia, spondylolisthesis with neurologic influence, narrowing of medullar canal, rheumatic disease, orthopaedic or neurologic conditions such as diminished sensibility, lack or absence of muscular strength, absence of patellar and/or aquilus reflexes;
* History of chirurgical intervention either on lumbar or lower limbs in the past 6 months;
* History of any trauma on the lumbar spine or lower limbs in the past 6 months;
* Any type of treatment on the lumbar in the previous month: that implicates physiotherapy, osteopathy, chiropractic, myofascial treatment, acupuncture or others;
* Medication that affects the vestibular system (dizziness, vertigo and humming)
* Pain during que experimental study;
* Difference between the length of the lower limbs: above 1.5cm;

Minimum Eligible Age

18 Years

Maximum Eligible Age

25 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes