Once the wait list control group started the intervention program, the same
Cheung et al. BMC Complementary and Alternative Medicine 2014, 14:160 Page 2 of 11
http://www.biomedcentral.com/1472-6882/14/160
data collection protocol applied. The 20 weeks follow-up
outcome was used to evaluate the carry-over effects of the
yoga intervention and post-intervention exercise adherence.
Research incentives of $10 were given at each data collection point to participants in both groups