Key result
Violet laser acupuncture at the Dazhui acupoint significantly increased peripheral microcirculation flux compared to a control point (p<0.05).
Why the study?
Does noninvasive violet laser acupuncture at the Dazhui acupoint improve peripheral microcirculation in healthy volunteers?
Does noninvasive violet laser acupuncture at the Dazhui acupoint improve peripheral microcirculation in healthy volunteers?
p-value: p=<0.05
Violet laser acupuncture at the Dazhui acupoint significantly increases peripheral microcirculation flux in healthy volunteers.
May support further study of violet laser acupuncture; hypothesis-generating and should not yet change practice.
Laser Doppler flowmetry for microcirculation monitoring was performed in 10 healthy volunteers (mean age ± SD: 24.9 ± 3.3 years; 5 females, 5 males) prior to, during, and after stimulation using a noninvasive violet (405 nm) laser needle at the Dazhui (GV14) acupoint. The results of this controlled study (control point at the shoulder) showed significant (p < 0.05) increases in Flux (product of concentration and velocity of erythrocytes) at a distance of 3 cm from the acupoint. At the same time, no changes were found at the control point. Furthermore, 5 minutes after stimulation the microcirculation still flowed at a higher level than baseline values at the beginning of the investigation. In a single individual it was demonstrated that needle acupuncture enhanced this effect and placebo (deactivated laser) did not have a significant effect. The results suggest that violet laser acupuncture at the acupoint Dazhui can increase vascular effects on microcirculation.
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Wang et al. (2011) studied Healthy volunteers (n=10). Violet (405 nm) laser needle acupuncture at Dazhui (GV14) acupoint vs. Control point at the shoulder was evaluated on Flux (product of concentration and velocity of erythrocytes) at a distance of 3 cm from the acupoint (p=<0.05). Violet laser acupuncture at the Dazhui acupoint significantly increased peripheral microcirculation flux compared to a control point (p<0.05).
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