title: Violet laser acupuncture - Part 5: An investigation of different stimulation frequencies on heart rate and variability.
abstract: Violet laser acupuncture was recently described by our research group. Neurochemical studies of acupuncture analgesia revealed that 2- and 100-Hz peripheral stimulation induce differential peptide release from preproenkephalin and preprodynorphin via different neural pathways. The goal of the fifth part of this series was to perform a pilot investigation on the effects of 2- and 100-Hz violet laser acupuncture on heart rate (HR) and its variability (HRV) in 13 healthy volunteers (mean age ± standard deviation: 23.9 ± 1.7 years) using a new non-invasive method. We found a significant difference in mean HR before, during, and after 2- or 100-Hz violet laser acupuncture, and there was a significant difference of the low frequency/ high frequency ratio before, during, and after 2- or 100-Hz violet laser acupuncture. However, we did not observe a significant difference in total HRV before, during, or after treatment. Further studies should be carried out to compare the effects of different violet laser acupuncture frequencies.
authors.affiliation: Stronach Research Unit for Complementary and Integrative Laser Medicine, Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine and TCM Research Center Graz, Medical University of Graz, Graz, Austria.
authors.forename: Wei
authors.initials: W
authors.lastname: He
authors.forename: Dominik
authors.initials: D
authors.lastname: Wedig
authors.forename: Lu
authors.initials: L
authors.lastname: Wang
authors.forename: Ingrid
authors.initials: I
authors.lastname: Gaischek
authors.forename: Gerhard
authors.initials: G
authors.lastname: Litscher
mesh_terms: D015670:Acupuncture Therapy / Q000379:methods*; D000328:Adult; D003116:Color; D005260:Female; D006339:Heart Rate; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D007834:Lasers; D008027:Light; D008297:Male; D010865:Pilot Projects; D012016:Reference Values; D055815:Young Adult