1. Department of Recreation, Parks, and Leisure Services Administration, Central Michigan University, Mt Pleasant, MI, USA
2. Faculty of Physical Culture, Palacký University, Olomouc, Czech Republic
3. Department of Recreation and Leisure Studies, Brock University, St. Catharines, ON, Canada
4. Center for Curriculum and Institute of Studies, Korea University, Seoul, South Korea
5. Department of Sport and Leisure Studies, Yonsei University, Seoul, South Korea