Abstract
Objectives: To determine the ideal number of applications of high-power pain threshold ultrasound [HPPTUS] for the desensitization of latent myofascial trigger points [LTrPs] in the elderly. Methods: Twenty-four elderly participants [65-73 years, four males, 20 females] with LTrPs identified in the upper trapezius muscle were included in the study. The participants were equally assigned to the HPPTUS-5, HPPTUS-9, and conventional US groups. The participants received five or nine times of HPPTUS or conventional US intervention to an upper trapezius myofascial TrP. Treatments were applied during three sessions for 1 week. The primary outcome variable was pressure pain threshold to evaluate the sensitivity of LTrP in the upper trapezius muscle. The secondary outcome variables were pressure pain tolerance and visual analog scale [VAS] for the subjective pressure pain intensity at 4.5kg/cm2. Results: Between-group comparisons showed that the participants who received nine applications of HPPTUS showed a significantly greater increase in the pressure pain threshold and tolerance than the other groups at the end of the 1-week intervention. Within-group changes showed significantly decreased pain in all groups. No adverse effects were found. Conclusions: The results of this study indicate that nine applications of HPPTUS are more effective to reduce the pain sensitivity of LTrPs than conventional US techniques. Furthermore, this preliminary study showed no adverse effects of HPPTUS technique, even though strong stimulation was given to LTrPs.
| Original language | English |
|---|---|
| Pages (from-to) | 175-181 |
| Number of pages | 7 |
| Journal | Journal of Musculoskeletal Pain |
| Volume | 22 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
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Keywords
- Interventional ultrasound
- Myofascial pain syndrome
- Pain management
- Pain threshold
- Referred pain
ASJC Scopus subject areas
- Rheumatology
Cite this
A preliminary study on the effect of high-power pain threshold ultrasound to desensitize latent trigger points : A double-blinded randomized study. / Kim, Yushin; Kim, Jungjin; Kwak, Kun; Yoon, Bum-Chul.
In: Journal of Musculoskeletal Pain, Vol. 22, No. 2, 01.01.2014, p. 175-181.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A preliminary study on the effect of high-power pain threshold ultrasound to desensitize latent trigger points
T2 - A double-blinded randomized study
AU - Kim, Yushin
AU - Kim, Jungjin
AU - Kwak, Kun
AU - Yoon, Bum-Chul
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Objectives: To determine the ideal number of applications of high-power pain threshold ultrasound [HPPTUS] for the desensitization of latent myofascial trigger points [LTrPs] in the elderly. Methods: Twenty-four elderly participants [65-73 years, four males, 20 females] with LTrPs identified in the upper trapezius muscle were included in the study. The participants were equally assigned to the HPPTUS-5, HPPTUS-9, and conventional US groups. The participants received five or nine times of HPPTUS or conventional US intervention to an upper trapezius myofascial TrP. Treatments were applied during three sessions for 1 week. The primary outcome variable was pressure pain threshold to evaluate the sensitivity of LTrP in the upper trapezius muscle. The secondary outcome variables were pressure pain tolerance and visual analog scale [VAS] for the subjective pressure pain intensity at 4.5kg/cm2. Results: Between-group comparisons showed that the participants who received nine applications of HPPTUS showed a significantly greater increase in the pressure pain threshold and tolerance than the other groups at the end of the 1-week intervention. Within-group changes showed significantly decreased pain in all groups. No adverse effects were found. Conclusions: The results of this study indicate that nine applications of HPPTUS are more effective to reduce the pain sensitivity of LTrPs than conventional US techniques. Furthermore, this preliminary study showed no adverse effects of HPPTUS technique, even though strong stimulation was given to LTrPs.
AB - Objectives: To determine the ideal number of applications of high-power pain threshold ultrasound [HPPTUS] for the desensitization of latent myofascial trigger points [LTrPs] in the elderly. Methods: Twenty-four elderly participants [65-73 years, four males, 20 females] with LTrPs identified in the upper trapezius muscle were included in the study. The participants were equally assigned to the HPPTUS-5, HPPTUS-9, and conventional US groups. The participants received five or nine times of HPPTUS or conventional US intervention to an upper trapezius myofascial TrP. Treatments were applied during three sessions for 1 week. The primary outcome variable was pressure pain threshold to evaluate the sensitivity of LTrP in the upper trapezius muscle. The secondary outcome variables were pressure pain tolerance and visual analog scale [VAS] for the subjective pressure pain intensity at 4.5kg/cm2. Results: Between-group comparisons showed that the participants who received nine applications of HPPTUS showed a significantly greater increase in the pressure pain threshold and tolerance than the other groups at the end of the 1-week intervention. Within-group changes showed significantly decreased pain in all groups. No adverse effects were found. Conclusions: The results of this study indicate that nine applications of HPPTUS are more effective to reduce the pain sensitivity of LTrPs than conventional US techniques. Furthermore, this preliminary study showed no adverse effects of HPPTUS technique, even though strong stimulation was given to LTrPs.
KW - Interventional ultrasound
KW - Myofascial pain syndrome
KW - Pain management
KW - Pain threshold
KW - Referred pain
UR - http://www.scopus.com/inward/record.url?scp=84901504250&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901504250&partnerID=8YFLogxK
U2 - 10.3109/10582452.2014.883027
DO - 10.3109/10582452.2014.883027
M3 - Article
AN - SCOPUS:84901504250
VL - 22
SP - 175
EP - 181
JO - Journal of Musculoskeletal Pain
JF - Journal of Musculoskeletal Pain
SN - 1058-2452
IS - 2
ER -