1950's: The "training method" of Frans Kuyper

Dutch players training with the “method f Frans Kuyper” in 1950's.
Frans Kuyper presented his great coaching experience within a book published by K.N.Z.B (The Dutch swimming Federation) with title: “Waterpolotrainingsschema volgens het systeem van Frans Kuyper” – “Water Polo training with the method of Franc Kuyper”.
Source: Waterpolo; historie-training-techniek en taktiek; W. Tiemessen and Pim van den Bosch