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Comparison between high and low frequency percutaneous electrical nerve stimulation as treatment of myofascial chronic neck pain. The main hypothesis is that low frequency treatment will have more hypoalgesic effects than high frequency, and low frequency effects will last longer.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Low frequency | Experimental | Percutaneous electrical nerve stimulation with frequency of 2 Hz and 120 microseconds of pulse width will be applied. |
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| High frequency | Active Comparator | Percutaneous electrical nerve stimulation with frequency of 120 Hz and 200 microseconds of pulse width will be applied. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Low frequency | Procedure | A dry needling on trapezius muscle is performed, until two local twitch responses are obtained. The needle is kept inside the trigger point, as it will be the negative electrode, and an adhesive electrode will be added as the positive one. After that, a low frequency TENS is applied, at 2 Hz frequency and 120 microseconds of pulse width. |
| Measure | Description | Time Frame |
|---|---|---|
| Pain | Subjective feeling expressed by subjects in the area of discomfort. It will be measured by a Visual Analogue Scale, meaning a score of 0 points/centimiters "no pain" and a score of 10 points/centimiters "unbearable pain". | Changes on pain will be assessed during one month follow up. Baseline will be measured on the first day and one month later pain score will be reassessed. |
| Measure | Description | Time Frame |
|---|---|---|
| Pressure pain threshold | Minimal amount of pressure that induces pain. An algometer will be used to measure pressure pain threshold. Units will be kilograms per square centimeter. The higher the score is, the less sensitive the area will be. | Changes on pain will be assessed during one month follow up. Baseline will be measured on the first day and one month later pain score will be reassessed. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Jose V León Hernández, PhD | CSEU La Salle | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CSEU La Salle | Madrid | 28023 | Spain |
Data collected will be used only for research objective. Once the trial have finished, data will be destroyed.
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| ID | Term |
|---|---|
| D019547 | Neck Pain |
| D059350 | Chronic Pain |
| D009209 | Myofascial Pain Syndromes |
| ID | Term |
|---|---|
| D010146 | Pain |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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Double blind randomized control trial.
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Randomized list that was only known by the therapist. Subjects do not know about the treatment they were receiving.
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| High frequency | Procedure | A dry needling on trapezius muscle is performed, until two local twitch responses are obtained. The needle is kept inside the trigger point, as it will be the negative electrode, and an adhesive electrode will be added as the positive one. After that, a high frequency TENS is applied, at 12o Hz frequency and 200 microseconds of pulse width. |
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| Neck disability index. | Ten items questionnaire designed to asses the level of pain and self-assessment of cervical disability. The NDI (Spanish version) is composed of 10 questions related to daily functional activities. NDI presents an acceptable reliability with an intraclass correlation coeffcient (ICC) ranging from 0.50 to 0.98. It has been proposed that the clinically important difference required for NDI is seven points. | Pre treatment at the beginning of the study and one month later, on the last of the follow up period. |
| kinesiofobia | Eleven items questionnaire designed to asses pain-related fear. TSK-11, Spanish version. | Pre treatment at the beginning of the study and one month later, on the last of the follow up period. |
| D009135 | Muscular Diseases |
| D009140 | Musculoskeletal Diseases |