Table 2: Components of yoga intervention for each study.

Author (year)Postures (asana)Breathing exercises (pranayama)Concentration/meditation (dharana/dhyana)Deep relaxation/yoga sleep (nidra)Lecture/ counselingAnatomyChanting

Rakhshani et al.
(2010) [31]
×××××
Satyapriya et al.
(2009) [32]
××××××
Sun et al.
(2010) [28]
××
Chuntharapat et al.
(2008) [33]
××××××
Narendran et al.
(2005) [30]
××××
Narendran et al.
(2005) [29]
××××