“…The personal knowledge of the teachers surveyed had to be built up since their youth as practitioners of athletic activities or by joining the Congolese Athletics Federation to perfect their knowledge. In the same sense, D. Loizon (2017), based on the teaching of judo according to a clinical didactic approach and an exploratory and comprehensive aim, shows that the personal knowledge of judo specialist teachers was built from their youth throughout the practice of judo. It also highlights the role of the "experiential already there" and its conceptions of teachers and their personal knowledge.…”