Experimental Studies (Animals): Dry Needling Reduces the Spontaneous Electrical Activity in a Trigger Point Model in Rabbit Skeletal Muscle (N=9)

2002 ◽  
Vol 20 (4) ◽  
pp. 202-211
Keyword(s):  
Skeletal Muscle ◽  
Electrical Activity ◽  
Trigger Point ◽  
Experimental Studies ◽  
Rabbit Skeletal Muscle ◽  
Dry Needling ◽  
Point Model ◽  
Spontaneous Electrical Activity

No Increased Neuromuscular Jitter at Rabbit Skeletal Muscle Trigger Spot Spontaneous Electrical Activity Sites

2000 ◽  
Vol 8 (3) ◽  
pp. 69-82 ◽  
Author(s):  
Ta-Shen Kuan ◽  
Thy-Sheng Lin ◽  
Jo-Tong Chen ◽  
Shu-Min Chen ◽  
Chang-Zern Hong
Keyword(s):  
Skeletal Muscle ◽  
Electrical Activity ◽  
Rabbit Skeletal Muscle ◽  
Spontaneous Electrical Activity

Needle Electromyographic Activity of Myofascial Trigger Points and Control Sites in Equine Cleido-Brachialis Muscle – An Observational Study

2006 ◽  
Vol 24 (2) ◽  
pp. 61-70 ◽  
Author(s):  
Joanne Macgregor ◽  
Dietrich Graf von Schweinitz
Keyword(s):  
Skeletal Muscle ◽  
Electrical Activity ◽  
Muscle Tissue ◽  
Spike Activity ◽  
Trigger Point ◽  
Trigger Points ◽  
Emg Activity ◽  
Electromyographic Activity ◽  
Myofascial Trigger Points ◽  
Spontaneous Electrical Activity

Background Myofascial trigger points are commonly described in humans, and many studies have shown abnormal spontaneous electrical activity, spike activity and local twitch responses at these sites. Myofascial trigger points have only rarely been described in horses, and studies of their electrophysiological characteristics have not previously been published. The objective of this study was to explore the electromyographic (EMG) and other characteristics of myofascial trigger points in equine muscle, and to compare them with normal muscle tissue. Methods Four horses with chronic pain signs and impaired performance were examined. They had previously been examined at the second author's practice, and showed signs compatible with the diagnosis of myofascial trigger points in their cleidobrachialis (brachiocephalic) muscle, ie localised tender spots in a taut band of skeletal muscle which produced a local twitch response on snapping palpation. They had therefore been selected for treatment with acupuncture. Needle EMG activity and twitch responses were recorded at 25 positions at the trigger point and at a nearby control point during the course of each horse's acupuncture treatment. Results All subjects demonstrated objective signs of spontaneous electrical activity, spike activity and local twitch responses at the myofascial trigger point sites within taut bands. The frequency of these signs was significantly greater at myofascial trigger points than at control sites (P<0.05). Conclusion Equine myofascial trigger points can be identified, and have similar objective signs and electrophysiological properties to those documented in human and rabbit skeletal muscle tissue. The important differences from findings in human studies are that referred pain patterns and the reproduction of pain profile cannot be determined in animals.

Spontaneous Electrical Activity at Combined Acupuncture and Myofascial Trigger Point Sites

1996 ◽  
Vol 14 (2) ◽  
pp. 75-79 ◽  
Author(s):  
Adam A Ward
Keyword(s):  
Electrical Activity ◽  
Myofascial Pain ◽  
Trigger Point ◽  
Objective Measure ◽  
Trigger Points ◽  
Myofascial Trigger Point ◽  
Spontaneous Electrical Activity ◽  
Dynamic Relationship ◽  
Neck And Shoulder Pain ◽  
Myofascial Pain And Dysfunction

Small, localised areas of spontaneous electrical activity were found at combined acupuncture and myofascial trigger point sites, corresponding to Gall Bladder 21 in the Trapezius and Small Intestine 11 in the Infraspinatus, in patients with active myofascial neck and shoulder pain. The monopolar needle EMG techniques used to assess spontaneous electrical activity offer the possibility of providing an objective measure of both point activity and the effects of therapeutic intervention. Further studies are needed to examine not just the painful lesion itself, but its dynamic relationship with its corresponding spinal segment and associated higher centres. There are important similarities between acupuncture pain points and trigger points, and observations of both can be used profitably in further studies of myofascial pain and dysfunction.

scholarly journals Decreased Spontaneous Electrical Activity and Acetylcholine at Myofascial Trigger Spots after Dry Needling Treatment: A Pilot Study

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Qing-Guang Liu ◽  
Lin Liu ◽  
Qiang-Min Huang ◽  
Thi-Tham Nguyen ◽  
Yan-Tao Ma ◽  
...  
Keyword(s):  
Pilot Study ◽  
Electrical Activity ◽  
Acetylcholine Receptor ◽  
The Other ◽  
Sprague Dawley ◽  
Dry Needling ◽  
Spontaneous Electrical Activity ◽  
Sprague Dawley Rats ◽  
Model Control ◽  
Electrical Activities

Objective. The aims of this study are to investigate the changes in spontaneous electrical activities (SEAs) and in acetylcholine (ACh), acetylcholine receptor (AChR), and acetylcholine esterase (AChE) levels after dry needling at myofascial trigger spots in model rats.Materials and Methods. Forty-eight male Sprague-Dawley rats were divided into four groups. Thirty-six rats were assigned to three model groups, which underwent MTrSs modeling intervention. Twelve rats were assigned to the blank control (BC) group. After model construction, the 36 model rats were randomly subdivided into three groups according to treatment: MTrSs model control (MC) and two dry needling groups. One dry needling group received puncturing at MTrSs (DN-M), whereas the other underwent puncturing at non-MTrSs (DN-nM). Dry needling treatment will last for two weeks, once a week. SEAs and ACh, AChR, and AChE levels were measured after one-week rest of dry needling treatment.Results. The amplitudes and frequencies of endplate noise (EPN) and endplate spike (EPS) significantly decreased after dry needling treatment in the DN-M group. Moreover, ACh and AChR levels significantly decreased, whereas AChE significantly increased after dry needling treatment in the DN-M group.Conclusion. Dry needling at the exact MTrSs is more effective than dry needling at non-MTrSs.

Increased Spontaneous Electrical Activity at a Latent Myofascial Trigger Point After Nociceptive Stimulation of Another Latent Trigger Point

2010 ◽  
Vol 26 (2) ◽  
pp. 138-143 ◽  
Author(s):  
Josué Fernández-Carnero ◽  
Hong-You Ge ◽  
Yoshiyuki Kimura ◽  
César Fernández-de-las-Peñas ◽  
Lars Arendt-Nielsen
Keyword(s):  
Electrical Activity ◽  
Trigger Point ◽  
Myofascial Trigger Point ◽  
Nociceptive Stimulation ◽  
Spontaneous Electrical Activity ◽  
Stimulation Of
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