Yoga Improves Mental Function

Gothe et al. from the University of Illinois recently conducted a study to look into the effects of hatha yoga on cognition. They recruited 118 senior citizens (mean age of 62) and randomly assigned them to one of 2 groups: a hatha yoga intervention group and a stretching/strengthening control group. Each group took part in hour-long exercise classes 3x/week for 8 weeks. At the end of the study period the yoga group showed improved results at information recall, mental flexibility and task switching. Whereas the stretching/strengthening group showed no improvement.

Although the underlying mechanisms are not known, it’s possible that the improvements in mental function may have been secondary to a reduction in stress. Alternatively, they may be down to the focussed attention on breathing, body position and movement.

Acupunture Mechanisms Revealed

Research on mice by da Silva et al has revealed new mechanisms underpinning the workings of acupuncture. They injected carrageenan into the calf muscles of mice. This created an inflammatory response with associated pain and swelling. Manual acupuncture of Spleen 6 (an acupuncture point in the lower leg) reduced pain, heat and swelling of the muscle. Repeated acupuncture of Spleen 6 produced a phenotypic change from pro-inflammatory cells (M1 macrophages) to anti-inflammatory cells (M2 macrophages) with an associated increase in interleukin-10 concentrations in muscle which led to reduced pain and inflammation.