The following are some academic articles on the effectiveness of integrated health coaching.  There are over 70 articles and ongoing research exploring and confirming the benefits of integrated health coaching on lifestyle changes and overall health improvement.

http://journals.lww.com/lww-medicalcare/Abstract/2009/01000/Health_Coaching_via_an_Internet_Portal_for_Primary.6.aspx

http://www.biomedcentral.com/1471-2458/9/456/

http://www.ingentaconnect.com/content/sbp/sbp/2003/00000031/00000003/art00005

http://www.ingentaconnect.com/content/adis/dmho/2007/00000015/00000005/art00004

http://onlinelibrary.wiley.com/doi/10.1046/j.1532-5415.2003.51068.x/abstract;jsessionid=2D05FFD0F027695584CB711308F02F89.d04t04?deniedAccessCustomisedMessage=&userIsAuthenticated=false

http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2753.2009.01300.x/abstract?deniedAccessCustomisedMessage=&userIsAuthenticated=false

http://www.ajhpcontents.org/doi/abs/10.4278/ajhp.090313-LIT-101

http://www.biomedcentral.com/1471-2407/9/319/

http://jah.sagepub.com/content/17/6/697.short

http://tde.sagepub.com/content/36/4/629.short

http://www.webmd.com/balance/features/wellness-coaching-the-latest-trend-in-fitness