1 Prevention Research Center, Arnold School of Public Health, University of South Carolina, Columbia.
2 Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia.
3 University of South Carolina, Arnold School of Public Health, Department of Exercise Science, 921 Assembly St, Columbia, SC 29205. (Email: [email protected]).
4 Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia.
5 Department of Health Management and Policy, College of Public Health, University of Iowa, Iowa City.