- knowledge of the student in reference to his motor development;
- knowledge of educational problems in different age groups;
- continuous evaluation of the variations induced in the personality and maturation of the young, from the environmental influence and from the physical-motor educational action.
Especially for young people up to 14/15 years, the coach must follow as closely as possible the principle of versatility.
The versatility is the main way to make the students undertake a serious, correct and valid start up to the sport; It requires:
- analytical interventions (development of auditory and visual perception, sensory-motor coordination, of fine movements);
- global interventions (multivariate sequences, mixed paths, multipurpose games, team games);
- timely interventions (the right thing at the right time).
Effects of some sports on young people
SPORTEFFECTswimmingIncrease of laxityrunningLimitation of mobility in some jointsTennis-fencingAsymmetrical trainingsoccerLower limb imbalances(G. Frohner, 2002)
This would lead us to think that all these activities can guarantee a complete development of the individual.
This is not true if we do not organize the activities so that they are integrated with each other without one being predominant over the other. Reason for which it is always advised, with regard to the formation of a soccer player, to implement multi-purpose activities especially in prepubescent and puberty age regardless of the sport that the individual is practicing. It is therefore important that the training proposals are inclusive of all factors (without forgetting which the main activity is)
COACH RESPONSIBILITIES
Many coaches, because they offer their time for free, think theyre not responsible for the growth and health of the guys who train, but only for the sporting result of their action. The coach of youth teams is instead considered responsible for the psychological damage that can cause to young people and especially the physical damage caused by negligence or non-knowledge: managers (co-responsible) should remember to always inform the coach of his responsibilities before start his work.
It would be important at least to know that there are phases of growth in which different characteristics and coordination skills are developed; theyre called SENSITIVE PHASES
Sensitive phases
Stages of greater sensitivity of different motor skills and psychophysical qualities in the ages of six to fifteen.
Between 5 and 9/10 years the basic motor schemes are achieved; precision in movements has increased
Between 6 and 8 years improves balance quickly
Between 7 and 10 years improves speed of movement
Between 8 and 10 years the attitude to predict the speed and direction of moving objects grows
Between 9 and 10 years the maximum step frequency is reached
Between 9 and 11 years advances in sensory-motor coordination (eye-hand and eye-foot general dynamics) are obtained
Between 11 and 12 years the development of lateralization is completed
Between 12 and 18 years the muscle force doubles; for girls after 13 it does not substantially increase
Up to 14 years avoid passive mobility exercises, practically those performed with the help of others
After 10 years training for muscle stretching and mobility begins
Phases of sports training
Before listing the various phases of sports preparation it is necessary to remember that the chronological ages indicated are purely schematic; in the juvenile preparation it is much more serious and correct to consider the biological ages of the various subjects.
Stages or levelsAll sports activitiesSoccer in particular6-10 yearsPreliminary general preparationMe and the ball10-13 yearsBeginning for starting-up sportMe, the ball, the partner13-15 yearsTraining specialized in a sportMe, the ball, the partners, the opponents15-18 yearsSport improvement:1. Area of the first great successes;2. Zone of optimal possibilities;3. Zone of stabilization of maximum performance.The teamThese indications are important in order to establish what the training proposals are and to be able to plan the activities
Principle of the finalized load
Training phasesGeneral motor trainingSpecific conditional trainingSpecial trainingcompetitionsBasic training8-10 years30%20%40%10%Construction training 10-13 years10%25%45%20%High level training 13-1510%20%35%35%Very high level training 15-180%25%35%40%(Schonborn, 1984)
The road to be followed in youth training is to gradually increase the load. The training stimuli must be applied progressively and appropriately to development.
The recommended methodological sequence is to increase:
- first the frequency of training (defined as number of sessions);
- then the volume (defined as quantity of work);
- finally the intensity (defined as execution and loading speed).
(Ehlenz, Grosser, Zimmermann, 1983)
EXPLORATIONexperimentationSETTINGassimilationSTABILIZATIONautomation8-12 years13-15 years16-20 yearsTactical feeling and technical abilityTactical and technical behaviorTactics (sense of position) and techniqueAccording to Martin (1982) sensitive phases find their moments of greater improvement in the ages indicated by the following diagrams.
It is not possible to train the coordinative and conditional abilities that have the same effectiveness at any age: no capacity can be exercised in the same measure at any age (Israel 1976).
With entry into puberty, there are decreases in performance or stagnation in the coordinating field (Sharma, 1993).
In boys with delayed development, are found coordination results better than those with early or normal development.
The periods of development in which trainability is very favorable for a certain motor capacity or class of sporting tasks (for example development of joint mobility, improvement of sporting technique), should be considered as sensitive phases for that class of tasks. We must pay close attention to the fact that there is an equal sensitivity between adequate and inadequate training methods. If you do not use the most favorable childhood years for the formation of coordination and sports technique, or you allow them to form wrong athletic behavior, the negative consequences will certainly be more conspicuous and therefore more lasting than in other periods.