Physical activity is needed for normal
growth and development and for young people to reach their potential in
muscle and bone development.
Sport is an ideal way to provide this necessary activity, as it also brings psychological and social benefits to young people.
For the best physical and skill development, consideration must be
given to factors related to growth and maturation to help with decisions
about grouping young people for participation and readiness for:
The development of a child is driven by three distinct processes;
growth, maturation, and adaptation. These have important implications
for training and competition.
Growth is the increase in overall body size with
changes in muscle, bone and fat and this affects motor skills. Growth is
- Different parts of the body grow at different rates
- Periods of growth start and stop at different times.
Maturation is the genetically programmed series of
changes leading to maturity. These changes occur in the same sequence in
everybody, but there are great individual differences in:
- When puberty starts
- How long it takes (it can be 18 months to five years)
- How much growth occurs in the adolescent growth spurt. The
growth spurt in height happens first and is followed by the growth spurt
in weight and then the growth spurt in strength.
Adaptation occurs as a result of external rather than genetic factors (e.g. intensive training).
Implications for sport
The uneven spread in growth and maturation in young people of the
same age makes chronological age of limited value in determining the
developmental status of a young person. This creates challenges related
to opportunity, training and competition.
Opportunities (e.g. being selected to participate) may not be offered
to some young people because of their current developmental status.
Therefore, sport providers must:
- Be aware that late maturing young people may be disadvantaged when competitions are based on chronological age
- Encourage young people despite their current body shape as this may become different later on.
Activities should be organised so young people have positive
experiences regardless of their developmental status. Young people and
their parents/carers should also focus on personal improvement and not
comparison with others of the same age.
The result is more young people having a chance to realise their
potential and expansion of the talent pool for future success in sport.
For the most part, training and sport activity is beneficial for the
best possible physical growth and development of young people.
However, it is important to remember that young people differ from
adults in the quality of their tissues and are not able to take the same
Consequently, training must be conducted differently for young
people, particularly if they are specialising and involved in a narrow
range of activities.
Injuries do occur on occasions but fortunately are usually
reversible. There are times during periods of growth when tissues are
For example, it takes considerable time for a bone that has
lengthened to become strong and for the muscles, tendons and ligaments
to grow to the new length of the bone.
The most common problem is soft tissue injuries (muscles, ligaments
and tendons) due to trauma or overuse. Rare problems include the risk
- Fractures, particularly during the growth spurt when bones are lengthening and are relatively porous
- Injuries to the growth plate of bones caused by high contact forces or repetitive loading in some sports.
One area of increasing concern is low bone density in adolescent
girls where particular sports require leanness at the elite level (see Making sport safe – junior sport policy).
The high-energy expenditure of intense training accompanied by
restricted food intake can lead to menstrual dysfunction and precipitate
This in turn increases the risk of:
- Stress fractures in the short-term
- Osteoporosis in later life.
Healthy eating with sufficient energy for training is important to prevent a negative impact on growth and maturation.
For safety, young people in intense training should have qualified
coaches who plan training and competition schedules according to
individual needs. These should be:
- Designed around the holistic needs of young people with
consideration of their level of social, emotional and psychological
- Planned while taking into account all physical activities undertaken by a young person
- Adjusted on an ongoing basis so loading is progressive and matched to their developmental stage.
Strategies for accommodating growth and maturation — training/practice
- Plan and adjust training schedules based on individual growth and maturation
- Monitor for changes indicating a growth spurt (e.g. faster
increase in height, onset of menstrual cycle in girls and voice changes
in boys, input from parents etc) and alter training and competition
based on individual needs
- Educate coaches and parents/carers on issues related to growth and maturation of young people
- When under-eating is suspected in young people who are training
intensely, seek professional advice on healthy nutrition immediately.
Competition is an important part of sport because it provides challenge in applying, testing and developing skills.
However, the great variation in children of the same age in physical
aspects such as height, weight and strength results in the risk of
injury and psychological distress when young people are unevenly
It may be necessary to consider groupings based on criteria other
than age to favour a positive environment for young people continuing in
Handicapping is a way of allowing the participation in open
competition of young people with disabilities, or who are smaller or not
as strong as others.
Strategies for accommodating growth and maturation — competition
- Focus on personal improvement, not comparison against others
- Consider the use-varied criteria for groupings (e.g. skill
level, experience or body weight, rather than chronological age or
- Use handicapping in competitions to reduce the effect of growth and maturation differences
- Consider skills, physical maturation and psychological
development and allow boys and girls to participate together when these
Some young people are started in hard training early (e.g. five to
eight years) in the belief that this will increase the chances of
developing an elite athlete.
However, early success does not predict success later on. Many world-class adult athletes were not outstanding as children.
Expert opinion is that children 12 years and under should be
encouraged to participate in a wide range of activities requiring a
variety of motor skills before beginning to specialise in a single
sport, event or position.
In this way, the athleticism of young people is improved and late
developers are encouraged to stay in sports long enough to derive
benefit and satisfaction from their eventual maturity.
Some young people have the potential to become elite athletes and so
may wish to train seriously. Their progress is best catered for by:
- Graduated talent development programs based on quality coaching and talent management
- Physical, mental and emotional preparation for the demands of high-level competition
- Education about the societal role of elite athletes and the potential impact of success and failure on their lives.
A well-rounded approach is needed so that their educational and
social needs are not compromised. Consideration should also be given to
the difficulty of predicting at an early age the success or otherwise of
the future adult athlete.
Strategies for talent development
- Focus on young people having fun so their interest is maintained until they are at an age and stage to specialise
- Leave talent identification and development as late as possible
- Expose young people to as many different sporting experiences as possible (e.g. rotate positions and teams).
While achieving and responding to challenges, young people must also
have fun. It is not in their best interest to have them concerned at an
early age about whether they are going to make the elite ranks. This
concern could manifest in overdoing training and competition and be
counter-productive. Let them enjoy moving up the pathways to success.
Young people grow and mature at different rates. Understanding the
implications of this can make sports participation more rewarding and
safer for young people if sports providers:
- Adapt activities to their changing needs especially during periods of rapid growth
- Judge performance according to a young person’s stage of development and not by what others of the same age can do
- Leave decisions about specialisation as late as possible so best choices are made for the young person.
Key points — growth and maturation
- Growth and maturation vary greatly in young people, making chronological age a poor indicator of developmental status
- Young people should be encouraged to participate in a wide range of sporting activities
- Late maturers and young people small for their age can be discouraged in sport and may not get a chance to develop their talent
- During growth spurts training and competition need to be planned carefully to avoid injury
- The risk of bone fracture, growth plate injuries and soft tissue injuries increases during rapid growth
- Girls who under-eat while training intensely run the risk of stress fractures and, in later life, osteoporosis
- Training and competition schedules need to be planned around the holistic needs of each individual athlete
- Early specialisation reduces athleticism (competence in a broad range of motor skills) and can lead to early burnout
- Taking care of young people with regard to practice and training
schedules and when they specialise in their sport, is important to keep
young people in sport for the long-term and to make sure no potentially
talented young people are lost to the sport.