Reference Reason for exclusion
Chiesa A, Serretti A (2010) A systematic review of neurobiological and clinical features of mindfulness meditations. Psychol Med 40: 1239-52. Includes interventions other than yoga
da Silva TL, Ravindran LN, Ravindran AV (2009) Yoga in the treatment of mood and anxiety disorders: A review. Asian J Psychiatr 2: 6-16. Mechanisms of yoga are not the focus of the text
Omkar SN, Vishwas S, Tech B (2009) Yoga techniques as a means of core stability training. Journal of Bodywork and Movement Therapies 13: 98-103. Insufficient empirical evidence
Ospina MB, Bond K, Karkhaneh M, Tjosvold L, Vandermeer B, Liang Y, et al. (2007). Meditation practices for health: State of the research. Evid Rep Technol Assess 155: 1-263. Includes interventions other than yoga
Posadzki P, Ernst E (2011) Yoga for low back pain: A systematic review of randomized clinical trials. Clin Rheumatol 30: 1257-62. Mechanisms of yoga are not the focus of the text
Posadzki P, Parekh S, Glass N (2010) Yoga and qigong in the psychological prevention of mental health disorders: A conceptual synthesis. Chin J Integr Med 16: 80-6. Includes interventions other than yoga
Table 2: Characteristics of excluded reviews.