Karen J. Calfas

A Controlled Trial of Physician Counseling to Promote the Adoption of Physical Activity

Karen J. Calfas, Barbara Long, James F. Sallis et al. · Preventive Medicine · 1996 · 565 citations

Family Medicine, Counseling, Physical Activity +10

Assessing Perceived Physical Environmental Variables that May Influence Physical Activity

James F. Sallis, Marilyn F. Johnson, Karen J. Calfas et al. · Research Quarterly for Exercise and Sport · 1997 · 540 citations

Reliability and Validity of the Sedentary Behavior Questionnaire (SBQ) for Adults

Dori E. Rosenberg, Gregory J. Norman, Nicole Wägner et al. · Journal of Physical Activity and Health · 2010 · 501 citations

Diet, Physical Activity, and Sedentary Behaviors as Risk Factors for Overweight in Adolescence

Kevin Patrick, Gregory J. Norman, Karen J. Calfas et al. · Archives of Pediatrics and Adolescent Medicine · 2004 · 480 citations

Effects of Physical Activity on Psychological Variables in Adolescents

Karen J. Calfas, Wendell C. Taylor · Pediatric Exercise Science · 1994 · 400 citations

Physical Activity, Kinesiology, Physical Activity Epidemiology +12