International Research in Science and Soccer II showcases the very latest research into the world's most widely played sport. With contributions from scientists, researchers and practitioners working at every level of the game, from grassroots to elite level, the book covers every key aspect of preparation and performance, including: performance and match analysis; training and testing; physiotherapy and injury prevention; biomechanics; youth development; women's soccer; sport science and coaching; sport psychology.Sports scientists, trainers, coaches, physiotherapists, medical doctors, psychologists, educational officers and professionals working in soccer will find this in-depth, comprehensive volume an essential and up-to-date resource. The chapters contained within this volume were first presented at The Fourth World Conference on Science and Soccer, held in Portland, Oregon, in June 2014 under the auspices of the World Commission of Science and Sports.

PART I Match Analysis 1. Changing the Ratio of Area Per Player During Small-Sided Soccer Games Shapes Performance - M.S. Azli, K. Davids, R. Duarte, D. Araujo, C. Button and A. Shield 2. Possession with Purpose: A Data-Driven Approach to Evaluating Team Effectiveness in Attack and Defense C. Gluck and T. Favero 3. Positional Role Influences Soccer Tactical Performance R. Santos, I. Teoldo, M. Padilha and G. Machado 4. Substitution Patterns and Analysis in Men's Division I College Soccer D. Conte, M. Niederhausen, M. LaPlante, A Tessitore and T. Favero 5. Substitution Patterns in Women's Division I College Soccer: Game Strategy or Fatigue Prevention T. Favero, D. Conte, M. Niederhausen, A Tessitore and M. LaPlante 6. Tactical Analysis of Barcelona, Inter Milan and Manchester United Counterattack - A Mixed Method Approach H. Sarmento, P. Roma, A. Marques and J. Leitao 7. Using Positional Data to Analyze Tactical Behavior in Soccer Matches K.A.P.M. Lemmink, E. M. Brunner and W.G.P. Frencken PART II Exercise Physiology 8. Effect of Nitrate Gels on Repeated Sprint Performance and Recovery A.T. Hulton, J.P. Morton, S. Mercer, H. Gould M. Deadman and B. Drust 9. Physical Demands of Regular Season and Playoff Matches in Professional Women's Soccer: A Pilot from the Female Athletes in Motion (FAiM) Study. J. D. Vescovi 10. GPS Performance Analysis of Women's Soccer Competitive Matches of the Second and Fourth German Leagues V. Martinez- Lagunas, M. Niessen and U. Hartmann 11. Salivary Cortisol is Highly Correlated With Training Intensity in English Premier League Players J. Dunbar, B. Rosen, M. Gimpel, and A. Jehanli 12. Effectiveness of Treadmill Versus Ground-Based Repeated Sprint Training on Sprint Time and High-Intensity Running Ability in Youth Female Soccer Players R. Bucciarelli, F Yousefian, J. Cresser and R Rupf 13. Heart Rate- Versus Speed-Based High-Intensity Interval Training in Young Soccer Players Rabbani and M. Buchheit PART III Sports Medicine 14. Neurocognitive Changes in Men's and Women's Soccer Players Across a Collegiate Career J.B. Caccese and T.W. Kaminski 15. Systematic Development of Fitness for Return to Play From Lower Extremity Injury. J.R. Cone 16. New Insights in Concussion Diagnosis, Evaluation and Rehabilitation J. Chesnutt 17. Bone Health and Intermuscular Adipose Tissue-Free Skeletal Muscle Mass in Costa Rican Football Players J. Moncada-Jimenez, Y. Chacon- Araya, and A. Salicetti-Fonseca 18. Relationship Between Injuries and Somatic Maturation in Highly Trained Youth Soccer Players O. Materne, A. Farooq, A. Johnson, M. Greig and L. McNaughton PART IV Sport Psychology, Youth Development and Coaching 19. A Scale to Measure the Complexity of Game Situations in Soccer M.A. Lopez-Felip and J.M. Porter 20. Decision Making and Tactical Knowledge: An Australian Perspective in the Development of Youth Football Players D. O'Connor and Paul Larkin 21. Analyzing and Reconciling Models of Youth Development in American Soccer: People Versus Performance A.M. Guest 22. The Ultimate Goal: Achieving Optimal Collegiate Women's Soccer Performance Through Promotion of Sport Enjoyment S. Barnicle and D. Burton 23. Gender Differences in Participant Motivation in Masters Football at the 2010 Pan Pacific Masters Games Heazlewood, J. Walsh, M. Climstein, K. Adams, T. Sevene, M. DeBeliso and J. Kettunen 24. What does a Football Player's Cultural Capital Say About Their Prospects? M. Duopona Topic, J. Coakley and J. Krizaj PART V Biomechanics and Technological Tools 25. Development of a Semi-Automatic Tracking System for Soccer Players by Using Particle Filter K. Sakaue, R. Iseyama, A. Souma and S. Ishizaki 26. A Method of Measuring the Linear and Angular Kinematics of a Soccer Ball in Flight D. Noor, R.E.D. Ferdinands, A. Beach and M. Halaki PART VI Performance Profiling 27. Prognostic Validity of Motor Diagnostics in the German Talent Identification and Development Program O. Höner, F. Schultz, R. Schreiner and A. Votteler 28. The Influence of Maturation, Physical Capacity, Technical Ability and Motor Competence on Playing Level and Position in Youth Soccer Players T.W.J. Lovell, C.J. Bocking, J. Fransen, S. Chang and A.J. Coutts 29. Analysis of Vertical Jump Parameters with Respect to Age, Jump Type and Bilateral Differences in Young Soccer Players F. Zahalka, T. Maly and L. Mala 30. Comparison of Locomotive Classifications between Central and External Defenders in Elite Youth Soccer Players Besim , O. Spendiff and J. Brouner 31. Lower-Extremity Strength Profile of Elite Youth Soccer Players T. Maly, F. Zahalka and L. Mala