V. Gregory Payne is a Professor Emeritus of Kinesiology at San Jose State University (SJSU). He formerly served as the Associate Dean for Research in the College of Applied Sciences and Arts and Chair of the Department of Kinesiology. Payne earned a BS at Western Illinois University and later received that institution's Alumni Achievement Award. He earned an MA at the University of Iowa and a PED at Indiana University with a specialization in human motor development. Payne was a Peace Corps Volunteer after his undergraduate degree, working for the Venezuelan Ministry of Education. He has produced over 170 publications, including numerous refereed articles and 19 editions of five books, and has made nearly 300 presentations around the world. Payne was an International Professor of the Year at SJSU and is a Distinguished Honorary Professor at the Shenyang Sport University, China. He received the Distinguished Service Award from the California Governor's Council on Physical Fitness and Sports and the prestigious Research Quarterly for Exercise and Sport Research Writing Award. He has held offices in several organizations, including NASPE President and Chair of the Motor Development Academy. He is an elected Fellow of the National Academy of Kinesiology, a group generally considered the top leaders and scholars in kinesiology, and the Research Consortium of AAHPERD/SHAPE, has chaired two editorial boards, and has reviewed for numerous journals. He was a member of the task force that developed the NASPE National Physical Education Standards. Payne lives in San Jose, California, with his wife, Linda, and their dog Jake, who is a mature runner, jumper, and catcher (Frisbee specialist).

Larry D. Isaacs is a Professor Emeritus and former Director of the Exercise Physiology Program, Department of Biological Sciences, College of Science and Mathematics, Wright State University, Dayton, Ohio, USA. Since receiving his doctorate in the biological and physiological basis of human motor development from the University of Maryland, he has published numerous scholarly articles and has authored, co-authored, and contributed to 21 textbooks. In retirement, he continues to serve on several editorial boards. Additionally, he has attained certification with the American College of Sports Medicine (Certified Exercise Physiologist) and was awarded the Research Fellow Status by AAHPERD/SHAPE. In addition, he has received the Wright State University Presidential Recognition Award for Research. After his retirement from Wright State University, he continued to work part-time for a period of 17 years as a clinical exercise physiologist at Hilton Head Hospital, Hilton Head Island, South Carolina, where he worked with both cardiac and pulmonary patients. He now enjoys his hobbies, which include writing, golfing, biking, and photography.