Zhang John, Marquina Nelson, Oxinos George, Sau Amy, Ng Derek
Associate Director of Research, Research Department, Logan College of Chiropractic, Chesterfield, MO.
J Chiropr Med. 2008 Dec;7(4):134-9. doi: 10.1016/j.jcm.2008.07.002.
This study reports on the effects of laser acupuncture on blood pressure, body weight, and heart rate variability by stimulating acupuncture points and meridians on college students and faculty members.
Forty-five students and faculty members from a chiropractic college were recruited in the study. All subjects signed a written informed consent before their participation in the study. This study was a randomized controlled pilot study with subjects divided into control and experimental groups. The control group received a sham low-level laser therapy treatment with no power output to the laser during their "treatment." The experimental group was treated with an activated laser. The acupuncture points used in this study were LI 4 and LI 11 for body weight and blood pressure. The treatment groups received 16 J of laser energy output for a total treatment time of 8 minutes (4 minutes for each of the 2 points).
After using the laser treatment for 90 days (at least 12 treatments per subject), both the systolic and diastolic blood pressures decreased significantly (P < .01). The mean systolic blood pressure was 129.6 +/- 14.7 mm Hg before the treatment and was reduced to 122.5 +/- 17.2 mm Hg (P < .001). The mean diastolic blood pressure was 85.6 +/- 8.0 mm Hg before treatment and was reduced to 77.2 +/- 8.7 mm Hg (P < .001). Subject's body weight was reduced in the active acupoint group, but the weight reduction did not reach a significant level. There were no significant changes in the heart rate variability.
It was concluded that low-level laser treatment of acupoint resulted in lower blood pressure by stimulating the LI 11 and LI 4. No significant difference was observed in both the body weight and heart rate variability after the laser acupoint treatment.
本研究报告了通过刺激大学生和教职员工的穴位及经络，激光针灸对血压、体重和心率变异性的影响。
招募了一所整脊学院的45名学生和教职员工参与本研究。所有受试者在参与研究前均签署了书面知情同意书。本研究为随机对照试验性研究，受试者分为对照组和试验组。对照组在“治疗”期间接受无激光能量输出的假低强度激光治疗。试验组接受激活的激光治疗。本研究中使用的穴位为用于体重和血压的合谷穴（LI 4）和曲池穴（LI 11）。治疗组接受16焦耳的激光能量输出，总治疗时间为8分钟（每个穴位4分钟）。
在使用激光治疗90天后（每位受试者至少接受12次治疗），收缩压和舒张压均显著降低（P <.01）。治疗前平均收缩压为129.6±14.7毫米汞柱，降至122.5±17.2毫米汞柱（P <.001）。治疗前平均舒张压为85.6±8.0毫米汞柱，降至77.2±8.7毫米汞柱（P <.001）。主动穴位组受试者体重减轻，但体重减轻未达到显著水平。心率变异性无显著变化。
得出的结论是，通过刺激曲池穴（LI 11）和合谷穴（LI 4），低强度激光穴位治疗可降低血压。激光穴位治疗后，体重和心率变异性均未观察到显著差异。
