Figure 1

Representative tracing from one laser treated and one control horse, displaying temperature and perfusion response. The perfusion is presented as arbitrary Perfusion Units (PU) and temperature as °C. Channel 1; perfusion in muscle. Channel 2; perfusion in skin at 1 cm from the irradiated area. Channel 3; perfusion in skin at 3 cm from the irradiated area. Channel 4; temperature in muscle. Channel 5; temperature in skin 1 cm from the irradiated area. Channel 6; temperature in skin at 3 cm from the irradiated area. A; one minute tracing immediately before the start of the treatment. B; one minute tracing at the end of the treatment. C; one minute tracing at four minutes after end of the treatment. T; start of laser and sham treatment, respectively.