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The aim of the study is the measurement and comparison of two manual therapy techniques, the Mulligan´s mobilization with movement technique, and de placebo technique, both applicated in patients with subacute neck pain.
Study design:
A randomized, longitudinal, experimental, prospective, parallel and double-blind clinical trial was conducted, where both the study subject and the researcher performing the measurements do not know which treatment group they belong to. Patients were randomly assigned using GraphPad Software's QuickCals application (La Joya, CA, USA) to one of the 2 study groups: experimental group and placebo group.
Participants:
The sample was composed of 42 sub-acute and inespecific neck pain patients residing in the Community of Madrid, all of whom were recruited personally for the study. Experimental group includes 21 subjects who received a manual theraphy technique named Mobilization with Movement (MWM) for a total of four sessions, distributed in two sessions per week. . Placebo group includes 21 subjects who received a placebo technique the same times.
Measurement instruments:
The primary outcomes of interest were true and total cervical ROM, Pain Pressure Threshold (PPT), pain intensity, Neck Disabilty Index, anxiety scale and depression scale. Secondary outcomes were pain and/or neck stiffnes for musculosketletal causes.
Goniometry
This is the measurement of angles on the arc of motion of a joint. Goniometry is a quantitative variable and numerical and unit of measurement is in degrees.
Measurement of cervical motion was performed with the device CROM (Cervical Range Of Motion) due to the extensive evidence as to its reliability. This device has two gravity goniometers, indicating the mobility in the sagittal and frontal planes (measurement of the flexion-extension and lateral inclination, respectively). For the transverse plane, the goniometer has a compass, a magnet with magnetic resting on the shoulders to measure neck rotation.
Algometry
Consists in measuring the pain threshold pressure, by stimulating the receptors of pressure. This threshold is defined as the minimal amount of pressure that produces pain.
Algometry is a quantitative variable and gives numerical values in Kilograms/cm2.
To study algometry has relied on a digital algometer Wagner Force One Digital Force Gage FDX model 100 with an 1cm2 head. This device, used with a gradually application of manual force and consistently, and prior familiarity with the user, has a high fiability.
Procedural protocol:
Measures were collected before and after intervention, stablishing the hypotesys about reasons and inmediate effects in relation with the tecnique applied.
No follows-up will be done to the patients. It is supposed like a bounding factor in that study.
- Goniometric measurements procedure: The patient position for goniometric measurement is similar to the physiotherapist intervention, described previously.
The patient actively and in all range of motion , perform flexion, extension, bilateral lateral flexion and bilateral rotation movements. And then, the therapist will gather the parameters at the end of every movement.
All goniometric measures will be reported three times and the average of three measurements will be calculated.
Goniometric informacion is collected just before the therapeutic intervention and five minutes later.
- Pressure algometer measurements procedure: The patient supine with algometer perpendicular to the exactly point for evaluation, and the pressure is increasing slowly and linearly. The intervention speed applied will be 1kg/cm2/second until the patient feels pain. Just in that moment, the researcher stops pressure.
Hereby a target response is favored due to fact that patient has more reaction time when he starts to feel pain. In that moment, the researcher interrumps exercised pressure with the algometer.
In every anatomical reference, three measures will be performed consecutively in intervals of 30 seconds for measurement to generate an average, neccesary for statical analysis.
Pain pressure threshold measure is performed just before therapeutic intervention and 5 minutes later.
- Anatomical References to study: Bilateral measurement of superior cervical region in spine C2: To plan a horizontal line between spine C2 to both sides, separated 1 cm to the spine point.
Bilateral measurement of superior cervical region in spine C7: To plan a horizontal line between spine C7 to both sides, separated 1cm to the spine point.
Superior Trapezius measurement: Horizontal line between acromion to spine C7 Lateral Epycondile measurement: lateral prominence of distal humeral epiphysis with the superior extremity supported on the table.
The algometer technique is performed just before therapeutic intervention and 5 minutes later.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Mobilization with movement technique | Experimental | The therapist applies supported pressure on right and left side and articular planes. Meanwhile, the patient executes active movements and the therapist is trying to find the specifies cervical joint to get partial or total painful relief or movements with restrictions. If the therapist couldn´t relief or remove pain or restriction with the pressure permorfem, he will readjust pressure and slide in differents planes of motion. It is necessary achieve that aim. After that, the patient stay in sit down raised position on a stool, with his back in contact with the wall. Hip, knee and ankle of the patient suppor a certain position: 90º of flexion which will be checked with a conventional goniometer. His hands are on the thighs. The treatment lasts 5 minutes. |
|
| Placebo technique | Sham Comparator | Placebo manual technique is performed similar to experimental group technique but no slides are performed. The therapist simply embraces cervical region with boths hands, avoiding any pressure or any painfully caoture. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Mobilization With Movement Technique | Other | The researcher explains cervical movements to the patient to be done while the technique is performed. This movements will be the painful and limited movements detected in goniometric intervention before the treatment and movements done actively and in all range of motion. |
| Measure | Description | Time Frame |
|---|---|---|
| Visual Analog Scale (VAS) | To evaluate the pain that the patient has, we use the VAS (Appendix 1). This is a 100 mm line that measures pain intensity. The left end of the line represents the absence of pain, while the right end represents the worst pain imaginable. The numerical pain intensity scale adds a numerical graduation where 1 is no pain and 10 is the worst pain imaginable. The confidence and reliability of this scale has been approved and validated in different studies. This scale will be used accompanying each CROM measurement as well as in pre-treatment measurements. | Change from base line and immediately after the intervention |
| Pressure Pain Threshold | The patient supine with algometer perpendicular to the exactly point for evaluation, and the pressure is increasing slowly and linearly. The intervention speed applied will be 1kg/cm2/second until the patient feels pain. Just in that moment, the researcher stops pressure. Hereby a target response is favored due to fact that patient has more reaction time when he starts to feel pain. In that moment, the researcher interrumps exercised pressure with the algometer. In every anatomical reference, three measures will be performed consecutively in intervals of 30 seconds for measurement to generate an average, neccesary for statical analysis. Pain pressure threshold measure is performed just before therapeutic intervention and 5 minutes later. | Change from base line and immediately after the intervention |
| Cervical Range of Movement (CROM) | Measurement of the range of movement by means of an inclinometer. To measure the range of movement the patient will be seated in a chair; feet supported on the floor, triple flexion of lower limbs of 90º (hip, knee and foot), back well supported and straight, head straight and look at the horizon. The inclinometer will be positioned to measure flexion, extension, right and left tilt and right and left rotation. The inclinometer for CROM (cervical range of motion) is approved and validated in different studies. | Change from base line and immediately after the intervention |
| Measure | Description | Time Frame |
|---|---|---|
| Neck Disability Index | It will be used to measure the level of disability perceived by the patient as a result of their neck pain, after performing the technique and to check whether it appears during the control measurements. It is a questionnaire composed of 10 sections on different activities of daily living (ADLs); self-care, reading, lifting weights, driving, sleeping, recreational activities, work, concentration, pain intensity and headache. Each section scores from 0 to 5, with zero being no pain and five being the worst pain imaginable. (Maximum 50 points). Therefore, in order of appearance, of the 6 options, the first option of each item represents 0 and the last one 5. The higher the score obtained, the greater the patient's disability. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Josué Fernández Carnero, PhD | Universidad Rey Juan Carlos | Study Director |
| Eleuterio A Sánchez Romero, PhD | Universidad Europea de Madrid | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Universidad Europea de Madrid | Madrid | 28670 | Spain |
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| ID | Term |
|---|---|
| D019547 | Neck Pain |
| ID | Term |
|---|---|
| D010146 | Pain |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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Study design:
A randomized, longitudinal, experimental, prospective, parallel and double-blind clinical trial will be carried out in which both the study subject and the researcher who made the measurements do not know which treatment group they belong to.
Participants The sample was composed of 42 healthy patients residing in the Community of Madrid, all of whom were personally recruited for the study. All of them will have two different manual therapy techniques (Mulligan and placebo) for acute or subactute neck pain. All patients will read the information sheet that explains what the study will consist of, as well as the informed consent form, which they will voluntarily sign before the intervention.
Each group will be given a different sentence: one group will attempt to influence with a positive expectation, another with a neutral expectation, and yet another will attempt to influence with a negative expectation.
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Neither the subjects assigned to the groups nor the researchers who measured the variables knew which group they belonged to.
Patients will be randomly assigned through GraphPad Software's QuickCals application (La Joya, CA, USA) to one of the 2 study groups
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| Change from base line and immediately after the intervention |
| STAI (State-Trait Anxiety) | Questionnaire composed of 20 items with 4 points each that evaluate "state anxiety" (transitory emotional condition influenced by environmental factors that decrease or increase anxiety) and another 20 that evaluate "trait anxiety" (personality factor that predisposes to suffer or not suffer anxiety). The 2-part score ranks patients at a percentile to the general population. The higher the score, the greater the anxiety. It is one of the most widely used tools in research to measure levels of general anxiety. | Change from base line and immediately after the intervention |
| Beck II (Depression) | A 21-item scale used to assess the severity of depression. The patient has to select for each item the response alternative that best reflects his/her state during the last week. The total score is obtained by adding up the values of the selected items, which range from 0 to 3. The commonly accepted cut-off points for grading intensity/severity are as follows: 0 to 9, no depression; 10 to 18, mild depression; 19 to 29, moderate depression, and ≥ 30 points, severe depression. | Change from base line and immediately after the intervention |