Alan Ewert

Yun Chang¹, 

Alan Ewert², 

Lisa M. Kamendulis³, 

Barbara A. Hocevar³ 

¹School of Kinesiology and Recreation, Illinois State University, 

²Department of Recreation, Park, and Tourism Studies, Indiana University, 

³Department pf Environmental and Occupational Health, School of Public Health-Bloomington, Indiana University