A study has investigated the effects of qigong on stress among computer operators. Ten women were included in a qigong exercise group and an equal number in a control group. Heart rate, blood pressure and finger temperature were measured at the beginning and end of the working day over a period of five weeks. Twenty-four hour urine samples were collected in the first and last weeks to measure catecholamine excretion in urine. Participants kept a daily record of psychological measures of strain and weekly measures of stress levels. Qigong was found to significantly reduce noradrenaline excretion in urine and influenced heart rate and body temperature, indicating reduced activity of the sympathetic nervous system. It also reduced painful low-back symptoms.

(Qigong reduces stress in computer operators. Complement Ther Clin Pract. 2007 May;13(2):78-84)