The effect of combination of red, infrared and blue wavelengths of Low Level Laser on reduction of abdominal girth circumference: a before - after case series
Introduction: The objective of this study was to assess the efficacy of a combination of three wavelengths (including red, infra-red, and blue) of low-level laser (LLL) as a non-invasive therapeutic method to reduce abdominal girth. To achieve biochemical activity on adipocytes, a red laser was used in our selective laser combination. Near-infrared laser was used to increase depth of penetration. Nitrosyl complexes of hemoglobin (NO-Hb) are sensitive to blue light, thereby leading to increase in release of biologically active nitric oxide (NO), which can affect tissue perfusion. Thus, a blue LED was added to the laser combination.Methods: [W1] Eighteen females participated in the study. Twelve sessions of laser therapy were performed, two sessions per week for each subject. Continuous wave diode lasers, including red (630nm), infra-red (808nm), and a blue LED (450nm) were applied and were all designed by the Canadian Optic and Laser Center.Results: Statistical analyses revealed that upper abdomen size significantly decreased from pre- (91.86 ± 11.16) to post- (87.41 ± 10.52) low level laser therapy (LLLT) (p<0.001). Middle abdomen size showed significant reduction from pre- (97.02 ± 8.82) to post- (91.97 ± 8.49) LLLT (p<0.001). Lower abdomen size significantly decreased from pre- (100.36 ± 9.45) to post- (95.80 ± 8.52) LLLT (p<0.001).Conclusion: Based on this case series pilot investigation, the combination of 3 different wavelengths of LLL was effective for abdominal girth reduction in 100% of our subjects (p<0.001), without any side effects. Future studies will assess the long-term benefits of this laser combination for reduction of subcutaneous fat deposits.
