1. Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts;
2. Department of Exercise Science, Lyndon State College, Lyndonville, Vermont;
3. Department of Exercise and Health Sciences, University of Massachusetts, Boston, Massachusetts;
4. Department of Exercise, Sport and Leisure Studies, University of Tennessee, Knoxville, Tennessee; and
5. Department of Kinesiology, University of Massachusetts, Amherst, Massachusetts