L3/L4 High Velocity Low Amplitude Technique Influence On Baropodometric Pressures In Healthy Young Adults
- Conditions
- Healthy
- Interventions
- Other: ShamOther: HVLA L3/4
- Registration Number
- NCT04415996
- Lead Sponsor
- Escola Superior de Tecnologia da Saúde do Porto
- Brief Summary
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.
- Detailed Description
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.
Recruitment & Eligibility
- Status
- NOT_YET_RECRUITING
- Sex
- All
- Target Recruitment
- 50
- Individuals aged between 18-25 years old;
- Individuals with BMI between 18,5 and 24,9 kg/m2
- 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;
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Control Group Sham 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. HVLA L3/4 Group HVLA L3/4 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.
- Primary Outcome Measures
Name Time Method Change from Baseline of center of pressure displacement after intervention Immediately after the intervention To obtain the center of pressure displacement measurements, it will be used Emed / CL program. This outcome will be measured either in sagittal plane in anteroposterior direction (x-axis) and in frontal plane in medial-lateral direction (y-axis) The participant will be standing in Emed pressure platform in upright position,with relaxed mouth, upper limbs along the body and feet shoulder-width apart, looking to an object standing 1 meter in front of participant´s eyes during 60 seconds. The Emed/ CL program will determine the This procedure will be repeated 3 times. The participant will rest sited on chair during 30 seconds between each measurements evaluation.
- Secondary Outcome Measures
Name Time Method Change from Baseline of plantar pressure mean Immediately after the intervention Plantar pressure mean is measure by Emed / CL program. It´s the average of all pressure values for each measurement, divided by the number of measurements for each sensor. The pressure unit used is Kilopascals (kPa).
The participant will be standing in Emed pressure platform in upright position,with relaxed mouth, upper limbs along the body and feet shoulder-width apart, looking to an object standing 1 meter in front of participant´s eyes during 60 seconds. This procedure will be repeated 3 times. The participant will rest sited on chair during 30 seconds between each measurements evaluation.Change from Baseline of plantar contact area Immediately after the intervention Plantar contact area corresponds to the measurement of the contact region of the foot with the platform sensors. It is determined by the sum of the area of all sensors activated within a given region.The plantar contact area unit is cm2 (square centimeters) The participant will be standing in Emed pressure platform in upright position,with relaxed mouth, upper limbs along the body and feet shoulder-width apart, looking to an object standing 1 meter in front of participant´s eyes during 60 seconds. This procedure will be repeated 3 times. The participant will rest sited on chair during 30 seconds between each measurements evaluation.
Trial Locations
- Locations (1)
Escola Superior da Saúde do Porto
🇵🇹Porto, Portugal