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the treatment started. The average pain reduction was 67% with a ± 95% confidence interval the average pain reduction was 47%-88%. Another significant finding was that there was pain reduction during the five days of consecutive treatment (Nes, 2005). A study was done by Giuliani et al (2004) in which the researchers were interested in whether or not LT had an effect on edema (swelling) and pain. They conducted their study on rats and had some interesting outcomes. A single laser application at the selected point resulted in a prompt reduction of edema so that it did not differ from the uninjured paw. It was also shown to reduce the overall severity of the edema. Rats that were treated with LT displayed a slight but significant reduction in the overall neuropathic pain behavior. Something else that the researchers found that was not expected was that the treatment resulted in resolving asymmetry in soft tissue depth between painful and non-painful sides (Giuliani, 2004). Therapeutic laser inhibits inflammation although problems in standardizing the dosage of laser delivered make any interpretation of this literature very difficult. In patients with tennis elbow, a double-blind randomized controlled trial of LT produced a small improvement in pain and improved grip strength after eight treatments, but the authors concluded that laser alone was not a recommended treatment (Scott, 2004). The neuropharmacological analgesic effects of lasers are most likely due to the release of serotonin and acetylcholine at the site. LT is also able to ease the effects of experimentally induced inflammation. Daily laser irradiation of less than ten minutes was sufficient to inhibit the inflammation by 20-30% (Fitz-Ritson, 2001). While not all researchers agree that LT is the best treatment option for every injury or condition there is significant research that shows that LT has a profound effect 15PDF Image | Light Therapy on Pain and Swelling vs Collegiate Athletes
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