First published in 1990, this timely book provides the first comprehensive state-of-the-art updates on various aspects of sperm motility. The first section describes in detail the structures, molecules and regulatory mechanisms involved in sperm movement. Also reported are the effects of external milieu and egg factors on the initiation and types of sperm motility. The second section covers how to measure sperm motility in human semen and in capacitating media. The book addresses the prognostic value of motility parameters in cases of infertility. It covers the clinical significance of various drugs and toxins on sperm motility and the clinical management of infertile males with sperm motility defects. This volume is indispensable to biochemists, cell biologists and andrologists interested in cell motility, and to urologists, obstetricians, gynecologists, and endocrinologists involved in the management of infertility. It is of value to those in reproduction, animal science, veterinary science, and vertebrate zoology. The book contains basic and clinically relevant information for graduate students, researchers and clinicians.