Introduction to the Special Z-Issue in Honor of the 90th Birthday of Vladimir M. Zatsiorsky.

This Special Z-Issue of Motor Control contains papers written by students, trainees, and younger colleagues of Professor Vladimir M. Zatsiorsky, who turns 90 years young in December 2022, and continues being an inspiration for researchers in movement science. The contributions of Vladimir Zatsiorsky to biomechanics, sport science, and motor control are so many and varied that he is rightfully viewed as a classic in all those fi elds of research. In these brief introductory comments, I will try to focus on the main contributions of Vladimir to motor control, although many of those studies can also be viewed as pertaining to biomechanics.Mostearlier studies by Vladimir were in the fi elds of biomechanics and sport science. Those early studies culminated in a book Physical Qualities of an Athlete published in 1966 in Russian. This book became a bestseller and was translated into 10 languages. After his emigration to the United States, Vladimir published three volumes (Zatsiorsky, 1998, 2002; Zatsiorsky & Prilutsky, 2012) that have become the go-to sources for researchers in biomechanics and motor control. In addition, he wrote a book on strength training (Zatsiorsky, 1995), which has become his most popular publication if one judges by the number of citations. I