Effect of a 4-year workplace-based physical activity intervention program on the blood lipid profiles of participating employees: the high-risk and population strategy for occupational health promotion (HIPOP-OHP) study.
Naito M, Nakayama T, Okamura T, Miura K, Yanagita M, Fujieda Y, Kinoshita F, Naito Y, Nakagawa H, Tanaka T, et al. Atherosclerosis. 2008 Apr; 197(2):784-90. Epub 2007 Sep 14.