Qigong exercise has been shown to induce acute psychological changes of a positive nature; but whether longer durations have greater effects than shorter ones is not known. Forty-one regular qigong practitioners therefore engaged in either 30 or 60 min of qigong exercise within a randomized cross-over design. Measures of mood, anxiety, activation, and hedonic tone were obtained pre- and post-exercise.
Johansson, M., & HASSMEN, P. (2008). Acute psychological responses to qigong exercise of varying durations. American Journal of Chinese Medicine, 36(3), 449-458. https://doi.org/10.1142/S0192415X08005898