ABSTRACT
Adolescence is a period during which children can suddenly think their parents are being difficult. Individual differences in timing and speed of the different growth phases suggest that adolescents can be divided into three groups: precocious, average-maturing and late-maturing children. During adolescence, micronutrients like calcium, vitamin D and zinc also become important because they play an important role in growth and bone health. Education on nutrition and good eating habits should be encouraged, especially for very active or athletic children and adolescents. The outcome of the formula is a way to individualize training for each child, which is an important principle in the Athletic Skills Model (ASM). Around the peak height velocity (PHV), all the basic movement skills and all coordinative abilities should be provided again in training programmes, with an important role for variation and adaptability in tasks. However, the ASM sees advantages for the late developers in mixing players of different biological ages in a training session.
