Quick V, Shoff S, White AA, Lohse B, Horacek, Kattelmann K, Phillips B, Hoerr S, Greene G.  

A streamlined, enhanced self-report physical activity measure for young adults. International Journal of Health Promotion and Education.  2016;54(5):245-254. DOI: 10.1080/14635240.2016.1169941.
Abstract