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The effect of Gua Sha treatment on the ... [Explore (NY). 2007 Sep-Oct] - PubMed - NCBI
RESULTS:
Gua Sha caused a fourfold increase in microcirculation PUs at the treated area for the first 7.5 minutes following treatment and a significant increase in surface microcirculation during the entire 25 minutes of the study period following treatment (P < .001). Females showed significantly higher rates of response than males (P = .003). Each subject experienced immediate decrease in myalgia in both the site treated, in the related distal control site, and in some cases, other distal sites. Pain relief persisted to some extent up to the follow-up visit. There were no adverse reactions.