I intend to keep posting some studies for you to read and critique. Too often with research onece it is published we just believe it and this is a problem. Look at published work with a critical eye to ensure what the study is saying is in effect true. I find too often in soccer related studies the statistical power is very poor and thus there are numerous variables that could be effecting the results rather than what is being reported. Here s an abstract of a review article so go and read it and then have a look at some of the papers it has reviewed. I do believe that soccer players havent even come close to maximising their athletic potential
Endurance and Strength Training for Soccer Players: Physiological Considerations
Hoff, Jan; Helgerud, Jan
Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
Correspondence and offprints: Professor Jan Hoff, Faculty of Medicine, NTNU, NO-7489 Trondheim, Norway. E-mail: Jan.Hoff@medisin.ntnu.no
Top soccer players do not necessarily have an extraordinary capacity in any of the areas of physical performance. Soccer training is largely based on the game itself, and a common recruitment pattern from player to coach and manager reinforces this tradition. New developments in understanding adaptive processes to the circulatory system and endurance performance as well as nerve and muscle adaptations to training and performance have given rise to more effective training interventions. Endurance interval training using an intensity at 90-95% of maximal heart rate in 3- to 8-minute bouts have proved to be effective in the development of endurance, and for performance improvements in soccer play. Strength training using high loads, few repetitions and maximal mobilisation of force in the concentric mode have proved to be effective in the development of strength and related parameters. The new developments in physical training have important implications for the success of soccer players. The challenge both for coaches and players is to act upon the new developments and change existing training practice.