Several mechanisms for deep massage’s natural stress-relieving effects include its ability to dilate blood vessels and also lower activity of the limbic system (including the hypothalamus), which is responsible for autonomic nervous system regulation and cortisol secretion. Massage has been shown to improve relaxation by boosting activity of the parasympathetic nervous system, as measured by heart rate, blood pressure and heart rate variability. (8, 9)
Now for some benefits that are not supported by research. The ability of sports massage to help the muscles get rid of lactic acid is not supported in research studies. Many researchers feel this is linked to the fact that sports massage does not increase blood flow to muscles. For example, a 2010 study found that blood flow was actually mechanically impeded by massage and that was a possible reason that lactic acid removal was impaired. A quicker recovery after sports massage is not yet supported by the research. Studies do support that active recovery (low-intensity exercise after work-out) is the best method of decreasing the amount of lactic acid that builds up after exercise and speeds recovery.
The findings by a recent study have confirmed the efficacy of reflexology by recording 31% of pain reduction among the patients with back pain. Quinn et al. reported that the pain intensity score decreased to an average extent in the experimental group.23 Poole et al. demonstrated that there was a significant difference between the control and experimental groups before and after the reflexology treatment.24