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The immediate effects (0-30 minutes) of a dry needling intervention on a trigger point on their viscoelastic properties (tone, elasticity and stiffness)
Objectives: To investigate the immediate effects of a dry needling puncture on the viscoelastic properties (tone, stiffness and elasticity) of a trigger point (TP) located in the infraspinatus muscle in participants with non-traumatic chronic shoulder pain.
Methods: Forty-eight individuals who presented non-traumatic chronic shoulder pain were recruited. The presence of a TP in the infraspinatus muscle of the painful side was confirmed by an experienced physiotherapist with a palpatory exam according to Travell and Simons criteria. The TP was marked and the viscoelastic properties including tone, stiffness and elasticity were measured with the MyotonPro device by an evaluator. After the first set of measurements (T1), an experienced physiotherapist applied a dry needling puncture to the TP with a pistoning technique to obtain a local twitch response (LTR) with an Optimed 40 x 0.30 mm single use acupuncture needle. The same set of measurements was repeated immediately after the dry needling (T2) and 30 minutes later (T3). Repeated measures ANOVA and post-hoc tests were used to assess changes in viscoelastic properties over time with a significant level set at 0.05.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Dry needling of a trigger point in the infraspinatus muscle | Experimental | Insertion a a acupuncture type needle into a trigger point in the infraspinatus muscle on the painful side to decrease the stiffness and tone and increase the elasticity |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dry needling | Procedure | Insertion of a Optimed 40mm x 0.30 single use, sterile acupuncture needle into a active trigger point in the infraspinatus muscle |
|
| Measure | Description | Time Frame |
|---|---|---|
| Tone in Hertz measured with a myotonometer on the trigger point | Measurement of the tone in Hz with the myotonometer MyotonPro on the trigger point | baseline |
| Tone in Hertz measured with a myotonometer on the trigger point | Measurement of the tone in Hz with the myotonometer MyotonPro on the trigger point | immediately after the intervention |
| Tone in Hertz measured with a myotonometer on the trigger point | Measurement of the tone in Hz with the myotonometer MyotonPro on the trigger point | 30 minutes after the intervention |
| Stiffness in N/m with a myotonometer on the trigger point | Measurement of the stiffness in N/m with the myotonometer MyotonPro on the trigger point | baseline |
| Stiffness in N/m with a myotonometer on the trigger point | Measurement of the stiffness in N/m with the myotonometer MyotonPro on the trigger point | immediately after the intervention |
| Stiffness in N/m with a myotonometer on the trigger point | Measurement of the stiffness in N/m with the myotonometer MyotonPro on the trigger point | 30 minutes after the intervention |
| Elasticity (no units: inversely proportional to the decrement of the oscillations) with a myotonometer on the trigger point | Measurement of the elasticity with the MyotonPro |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Nathaly Gaudreault, PhD | Université de Sherbrooke | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CRCHUS-Physius Lab | Sherbrooke | Quebec | J1H5N4 | Canada |
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| ID | Term |
|---|---|
| D020069 | Shoulder Pain |
| ID | Term |
|---|---|
| D018771 | Arthralgia |
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
| D010146 | Pain |
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| ID | Term |
|---|---|
| D000079245 | Dry Needling |
| ID | Term |
|---|---|
| D000529 | Complementary Therapies |
| D013812 | Therapeutics |
| D026741 | Physical Therapy Modalities |
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One group, one measurement of the viscoelastic properties with the MyotonPro of a single trigger point before the dry needle insertion, one measurement with the MyotonPro right after and 30 minutes later
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| baseline |
| Elasticity (no units: inversely proportional to the decrement of the oscillations) with a myotonometer on the trigger point | Measurement of the elasticity with the MyotonPro | immediately after the intervention |
| Elasticity (no units: inversely proportional to the decrement of the oscillations) with a myotonometer on the trigger point | Measurement of the elasticity with the MyotonPro | 30 minutes after the intervention |
| D009461 |
| Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |