Vladimir Zatsiorsky, PhD, is a professor of kinesiology at Penn State University in State College, Pennsylvania. A strength and conditioning consultant for Olympic teams from the former Soviet Union for 26 years, Zatsiorsky has trained hundreds of world-class athletes. He has also authored or coauthored 15 books and more than 350 scientific papers. His books have been published in several languages, including English, Russian, German, Spanish, Chinese, Japanese, Portuguese, Italian, Polish, Czech, Romanian, Serbo-Croatian, Hungarian and Bulgarian. He has received honorary doctoral degrees from universities in Poland and Russia and is an honorary member of the International Association of Sport Kinetics. In his spare time, he enjoys reading, listening to classical music and exercising. William Kraemer, PhD, is a professor in the department of kinesiology at the University of Connecticut at Storrs, where he works in the Human Performance Laboratory. He is also is a professor in the department of physiology and neurobiology and a professor of medicine at the University of Connecticut Health Centre. He is editor in chief of the Journal of Strength and Conditioning Research, an associate editor of Medicine and Science in Sports and Exercise, and an editorial board member of the Journal of Applied Physiology. A former junior high and college coach, Kraemer has coauthored many books and articles on strength training for athletes.