Presentation at the ICF Coaches` Symposium, Warsaw, 27.02-1.03.2009. Author presents • The traditional theory - criticism and restrictions, • The alternative approach: basics, facts and background and • Applications to the practice: recommendations. Recommendations and rationals (sumary): - The optimal duration of blocks-mesocycles varies from 2-6 weeks (The maximal rate of the certain abilities` improvement occurs in the initial part of the developing program; the short-term mesocycles exploit the most sensitive phase of the training stimulation). - Take into account that participation in competition reduces the training residuals (The physiological and emotional stress increases the catabolic processes, affects the loss of muscle mass, and shortens residuals of strength ability; the highly intensive competitive activity with pronounced anaerobic metabolism reduces cardiorespiratory fitness and aerobic capacity). - The mesocycles' duration in competitive period is usually shorter than their duration in the preparation period (The blocks-mesocycles of the preparatory period take more time to accomplish the morphological and physiological changes after the partial loss of adaptation in the transition period; competitive stress shortens the training residuals, which should be renewed in the subsequent mesocycl). - The residual effect can be prolonged by means of inclusion of the supporting mini- block of highly concentrated workloads (The supporting mini-block produces strong stimulus to reduced ability and prevents its further decrease and partial detraining). Conclusion: Block Periodization as an alternative training approach is worthy for learning and implementation in the preparation of high-performance athletes.
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