Abstract: Professionalization and commercialization in competitive sports have posed a change to the multi-year cycle training theory to which elite athletes taking part in major sports events all year round strictly adhere, as a result, some instructors have started to question and even abandon the "cycle" training theory. By means of case study and interview, the present paper analyzed Zhang hong's 4-year Olympic cycle training pattern, aiming to re-examine the "cycle" training theory and reveal that in the process of advancement, the theory has to undergo a series of transformation and face doubts from different perspectives. A reexamination of its inner logic will help strike a balance between the theory's change and stability so as to make theory more scientific and systematic.

Key words: cycle, training theory, reexamination, Winter Olympics, case, Zhang Hong