Preface -- Part I: Sports Injury Surveillance -- Sports Injury Surveillance in Japan (from Sports Safety Association) -- Sports Injury Surveillance in Japanese Junior and Senior High School Students -- Injury and Illness Surveillance among Olympic Athletes -- Part II: Concussion and Severe Head-Neck Injury -- Concussions in Junior Rugby Football Athletes and their Prevention -- Prevention of head and neck trauma in rugby -- Severe Head & Neck Injury and its Prevention in Judo -- Concussion and Severe Head-Neck Injury: An Approach for their Prevention in Rugby and Judo -- Part III: ACL Injury: Injury Mechanism, Prevention Programs and Their Usefulness -- Video analysis of ACL injuries in sports -- Video Analysis of ACL Injury Mechanisms Using a Model-Based Image-Matching Technique -- Injury Rate of Soccer Players and the Efficacy of the FIFA 11 + Program -- Biomechanical Studies on ACL Injury Risk Factor During Cutting; Utilizing the Point Cluster Technique -- Biomechanical Risk Factors and Prevention of Anterior Cruciate Ligament Injury -- Risk Factor Analysis of Female Soccer Tournament Players -- Prevention of Anterior Cruciate Ligament (ACL) Injury -- Anterior Cruciate Ligament Injury Prevention in Female Adolescents -- FIFA 11+ - Injury Prevention in Amateur Football - From Development to Worldwide Dissemination -- Influence of Changing Direction on the Center of Gravity and Knee Joint Angle in Rugby Players -- Anterior Cruciate Ligament Injury Prevention in Female Lacrosse Players Based on an Examination of Knee and Hip Joint Mechanics During Drop Vertical Jumps Performed While Holding a Lacrosse Stick -- ACL Injury Mechanism in Badminton: Survey of Injury Situation and Motion Analysis Study -- Part IV: ACL Injury: Post-Operative Rehabilitation, Recovery of Function and Tendon Regeneration -- Functional Hop Tests Contribute to Safe Return to Sports after Anterior Cruciate Ligament Reconstruction -- Biomechanical Adaptations in Subjects after Anterior Cruciate Ligament Reconstruction: Preventing Secondary Injury -- Morphology and Function of the Semitendinosus Muscle-Tendon Complex after Harvesting its Tendon for Anterior Cruciate Ligament Reconstruction -- Part V: Muscle Functions, Occurrence Mechanisms, and Program to Prevent Strain in the Hamstring Muscles -- Functional Differences among Hamstring Muscles in Hip Extension and Knee Flexion Exercises -- Anatomical and Functional Differences of Hamstrings -- Differences in Activation Patterns of the Hamstring Muscles during Sprinting -- The Relationship between Eccentric Exercise and Muscle Damage in Hamstring Muscles -- Risk factors and prevention of hamstring strain -- Part VI: Function in Arches of the Feet and Occurrence Mechanisms of Foot Disorders, Characteristics and Their Prevention -- Kinematics of the Foot and Ankle -- Biomechanical Analysis of the Effects of Footwear -- Risk Factors and Mechanisms of Fifth Metatarsal Stress Fracture -- Part VII: Lumbar Disorder and an Approach for Its Prevention -- Low Back Disorders Among Athletes and Its Prevention -- The Epidemiology of Low Back Disorders in Athletes -- The Prevention of Low Back Disorders in Divers -- Electromyographic Analysis of Deep Trunk Muscles During Sports Activities.