ABSTRACT
This chapter focuses on practical tests and measurements that are used in soccer and are interpreted in a biomechanical context. A suite of measurement tools and techniques exists to provide detailed, objective, and quantitative data to understand and evaluate the physical status and biomechanical effectiveness of players. The evaluation of jump performance has traditionally been part of pre-season screening. Decisions about which type of jump to test are typically interlinked with the available time and technology. Electromyography is used to measure and evaluate the electrical activity of a muscle. The most evident application in the practical setting is to provide real-time feedback on whether and how a muscle is functioning during activities, typically in a rehabilitation context. Muscular strength is a key component of physical performance and injury prevention. An isokinetic dynamometer is a sophisticated tool used to assess muscle strength under controlled circumstances, most commonly at a constant (isokinetic) velocity of joint angular rotation.
