It has been some time since I’ve posted and there are a couple of
reasons for this. As some of you know, I
have been concluding my final exams and prac in order to obtain my master’s degree
in sports science (strength & conditioning). The topic of this article is
one that I have had on the back burner in my mind for a year or so now. As I’ve reached the end of my studies I feel
this is an issue that I can dedicate some decent time to, in order to ensure the
information and presentation provides quality.
Key take out if you
can’t be bothered reading to the end…
Strength and Conditioning for children is a topic that lies very close
to my heart as it is something I intend on dedicating the rest of my
professional career to. The intention of this article is to communicate that strength
and power activities for children have an incredibly advantageous effect on
their development, so long as the person implementing it has sufficient
experience and knowledge on how to prescribe and periodise for maximum results
with minimum risk.
How do I know this?
As a professional athlete, I experienced four season-ending injuries,
which, undoubtedly led to the demise of my professional football (soccer) career. Knowing what I now know, I can confidently
say that had I performed the correct strength and power training as kid; I may
still be playing today. That is a fairly
bold statement, however drawing upon research from various well-respected people
in this field; it becomes very hard to see it any other way. I will reference the content I am talking
about throughout the article, and I welcome my readers to push past this, and
read the research I present, as they are quality, peer reviewed papers (if you
read my last blog you will understand how important independently review
articles are, especially in this area).
A (brief) history.
Coaches who encourage children to participate in various forms of
resistance training have met controversy throughout the short history of
investigation into the practice. I would
like to highlight the positives associated with this particular area of
training. Research indicates that the positives far outweigh the negatives
associated with strength training (for kids) and is going even further toward
suggesting that it is essential in achieving high levels of motor development,
skeletal strength, co-ordination, connective tissue strength, behavioural
benefits and reduction in negative anthropometric values.
Resistance training for non-athletes is relatively new in regards to
implementation and research. Furthermore, much conjecture shadows resistance
training for unambiguous populations – like children. This type of training has
been a taboo issue for children due to a variety of generalised and subjective
opinions that associate resistance training with a variety of effects including
the stunting of growth, fractures, growth abnormalities, higher risk of
injuries and lack of adaptations due to a lack of hormone production. Many
studies have been presented illustrating the benefits that resistance training
has on athletic performance however, there is now research on that proves the
transfer to non-athletic populations is proving beneficial.
Following this, specific populations such as children and the elderly
are now the focus of a lot of research in order to explore the feasibility that
this specific type of training has significant advantages for these alternative,
non-athletic populations.
What about aerobic
training?
Due to an absence of conjecture surrounding the benefits of aerobic
training in children as compared with resistance and plyometric training,
aerobic training is often prescribed to address the adverse body compositions
of modern children (Baranowski, Mendlein et al. 2000). While aerobic training is
affiliated with reduction in fat, more and more evidence is pointing towards
the execution of resistance-based exercises in children could be the answer to
address the social issue of ‘overweight kids’.
Addressing a social
issue.
There is acceptance amongst research and national bodies (Pediatrics 2001); (Medicine. 2006.); (Faigenbaurn, Outerbridge et al. 1996); (Golan 1998) (Smith 1993) along with many review articles: (Avery D. Faigenbaum. Lyle J 2000) (Falk 2003) suggesting that resistance training
has benefits for pre-adolescent children. In their articles, weight training
indicated improvements in:
- Strength
- muscular endurance
- maintenance of lean fat-free mass
- improved capacity in sports performance (motor skills)
- increased bone density
- decreased injuries
- better attitude and possible increased connective tissue strength
To date, no research has identified significant increases in muscle
mass as a response to resistance training in children (so kids looking like Arnold
Schwarzenegger is out of the question).
Implementation
In saying this, and before you go joining your kids up to the local gym,
much emphasis must be put on proper technique and detailed periodisation
(planning and progression). Confounding variables like duration and type of
resistance protocols has to be assessed when it comes to children in order to
achieve optimal outcomes (David G. Behm 2008). Resistance training modules must
take in to account age, gender, health status, physical fitness and chid
maturation for successful adaptations to occur.
The importance of proper periodisation and technique correction whilst
performing resistance training (in particular Olympic lifting and plyometric
exercises) is well documented through the research. It illustrates that these activities,
even though they are incredibly complex in nature, provide reduced injury incidence
when compared to other popular children’s sports. Under proper instruction, the risk of injury
whilst performing an Olympic lift during training or competition is relatively
low (Hamill 1994; Pierce K 1999; Byrd R 2003). For example, (Hamill 1994) evaluated injury rates in
adolescents who participated in a variety of sports and concluded that
weightlifting was up to six times less likely to injure a child in comparison
to other sports, including soccer and rugby. In support of these findings, Byrd
et al. and Pierce et al. evaluated the incidence of injury in young lifters and
concluded that competitive weightlifting is safer than generally thought,
provided that age appropriate training guidelines are followed and competent
coaching is available (Chu. D 2006).
The risk associated with plyometric (explosive training jumping,
bounding etc) training also coincides with many myths, in which some observers
still suggest high growth plate fractures are seen in children participating in
plyometric activities comparative to other forms of training. However, recent research
suggests this to be untrue and that children are actually found to have a lower
risk of growth plate fractures due to increased strength in childhood as
opposed to later in adolescence (Chu. D 2006). Often, children perform common
playground activities every day, including jumping, hopping and throwing, which
provide a base in plyometric activities, suggesting that plyometrics isn’t
foreign to children just because they lack physical development. In summary, it
is pivotal in their neural development and is safe if performed in conjunction
with a well-rounded physical program (Maffulli 1992).
These explosive types of exercise are now fundamental in increasing
fitness and sports performance in children (Chu. D 2006). If these types of training are
incorporated in a well designed program, it will help reduce the risk of injury
and also provide a foundation for significant gains in muscular power and
strength in adulthood.
Conclusion
I know this is a lot of science jargon however what I am trying to
communicate is that if your children intend on playing sport, or even if they
intend of living a long, injury-free life, do not be hesitant to put your kids
in a resistance program. The evidence strongly suggests that strength and power
activities in children have an incredibly advantageous effect on their
development. The take home message is: “Make sure the person implementing it
has sufficient experience and knowledge on how to prescribe and periodise for
maximum results with minimum risk.”
What's next?
Intent on delivering successful physical outcomes by providing a performance program that focuses on improving self-esteem, self-confidence, independence and motivation, in the coming months I intend on launching 'Strong Kids'. I can't say too much more than that now, but watch this space...
References
Annesi, J. J., A. D. Faigenbaum, et al. (2005). "Effects of a 12-week physical activity protocol delivered by YMCA after-school counselors (youth fit for life) on fitness and self-efficacy changes in 5-12-year-old boys and girls." Research Quarterly for Exercise and Sport 76(4): 468+.
Avery D. Faigenbaum. Lyle J, M. (2000). "Preseason conditioning for the preadolescent." Pediatric Annals; 29(3): 156.
Avery D. Faigenbaum. Lyle J, M. (2000). "Preseason conditioning for the preadolescent." Pediatric Annals; 29(3): 156.
Avery Faigenbaum, J. M. (2008).
"Relative Safety of Weightlifting Movements for Youth." Department
of Health and Exercise Science, 30(6).
Baranowski, T., J. Mendlein, et
al. (2000). "Physical Activity and Nutrition in Children and Youth: An
Overview of Obesity Prevention." Preventive Medicine 31(2): S1-S10.
Barr, S. I. and H. A. McKay
(1998). "Nutrition, exercise, and bone status in youth. / Nutrition,
exercice physique et masse osseuse chez les jeunes." International
Journal of Sport Nutrition 8(2):
124-142.
Bass, S., Pearce, G., Bradney,
M., Hendrich, E., Delmas, P.D. Harding, A., and Seeman, E. (1998. ).
"Exercise before puberty may confer Residual benefits in bone density in
adulthood: studies in active prepubertal and retired female gymnasts." J.
Bone
Miner. Res 13: 500–507.
Blimkie, C. J. R., Martin, J.,
Ramsay, J., Sale, D., and MacDougall, D. (1989). "The effects of
detraining and maintenance weight training on strength development in
prepubertal boys." Can. J. Sport Sci: 14: 104.
Brenner, J. S. (2007). Overuse
injuries, overtraining, and burnout in child and adolescent athletes. Pediatrics.
119: 1242+.
Byrd R, P. K., Rielly L, and
Brady J.Young (2003). "Young weightlifters’ performance across time."
Sports Biomechanics 2: 133–140, 2003.
Calhoon, G. F., A. (1999).
"Injury rates and profiles of elite competitive weightlifters." J
Athletic Training 34:232–238,.
Chu. D, F. A. (2006).
"Progressive Plyometric Training for Kids " Monterey: Healthy
Learning
David G. Behm, A. D. F., Baraket
Falk, and Panagiota Klentrou (2008). "Canadian Society for Exercise
Physiology position paper: resistance training in children and
adolescents." Appl. Physiol. Nutr. Metab. 33(3): 547-566.
Faigenbaum, A. D., J. R. Hoffman,
et al. (2007). "Effects of a short-term plyometric and resistance training
program on fitness performance in boys age 12 to 15 years." Journal of
Sports Science and Medicine 6(4):
519+.
Faigenbaum, A. D. M., Laurie
A;Rita LaRosa Loud;Burak, Bernadette T;et al (2002). "Comparison of 1 and
2 days per week of strength training in children." Research Quarterly
for Exercise and Sport; 73,(4;):
416.
Faigenbaurn, A. D., W.L.
Westcott, 1.]. Micheli, A.R., C. L. Outerbridge, R. LaRosa-Loud,
and 1.0., et al. (1996). "
The effects of strength training and
detraining on children." J. Strength and Conditioning 10(2):109-
114.
Falk, B., and Eliakim, A.
(2003). "Resistance training, skeletal muscle and growth." Pediatr.
Endocrinol Rev. 1: 120-127.
Golan, R., Falk, B., Hoffman,
J., Hochberg, Z., Ben-Sira, D., and Barak, Y. (1998). "Resistance training
for children and adolescents. Position statement by the International
Federation of Sports Medicine (FIMS)." In Sports and Children. Edited
by K.M. Chan and L.J. Micheli. Williams & Wilkins Asia-Pacific Ltd., Hong
Kong.: 265–270.
Hamill, B. (1994).
"Relative safety of weight lifting and weight training." J
Strength Cond Res 8: 53–57, .
Heinonen, A., Sieva¨nen, H.,
Kannus, P., Oja, P., Pasanen, M., and Vouri, I. (2000). "High-impact
exercise and bones of growing girls:
a 9-month control trial." Osteoporos. Int 11: 1010–1017.
Maffulli, N. (1992). "The
growing child in sport." British Medical Bulletin 48(3): 561-568.
Malina, R. M. (2006).
"Weight training in youth – growth, maturation, and safety: An
evidence-based review." Clin. J. Sport Med. 16: 478-487.
Medicine., A. C. o. S. (2006.).
"ACSM’s guidelines for exercise testing and prescription." 7th ed.
Lippincott, Williams & Wilkins, Philadelphia, Penn.
Mersch, F., and Stoboy, H. .
(1989). "Strength training and muscle hypertrophyin children. In
International series on sports sciences.
Children and exercise XIII." Edited by S. Oseeid and
K.H. Carlson Human Kinetics, Champaign, Ill.: pp. 165–192.
Pediatrics, A. A. o. (2001).
"Strength training by children and adolescents." Pediatrics, 107:: 1470-1472.
Pierce K, B. R. a. S. M. (1999).
"Youth weightlifting—Is it safe? ." Weightlifting USA 17: 5, .
Ramsay J, B. C., Smith K, Garner
S, MacDougall J (1990). "Strength training effects in prepubescent boys.
." Med Sci Sports Exerc 22:605–
614.
Rowley, S. (1987).
"PSYCHOLOGICAL EFFECTS OF INTENSIVE TRAINING IN YOUNG ATHLETES." Journal
of Child Psychology and Psychiatry 28(3):
371-377.
Sadres, E., Eliakim, A.,
Constantini, N., Lidor, R., and Falk, B. (2001.). "The effect of long-term
resistance training on anthropometric measures, muscle strength, and
self-concept in pre-pubertal boys." Pediatr. Exerc. Sci. 13: 357-372.
Smith, A. D., Andrish, J.T., and
Micheli, L.J. (1993). "The prevention of sport injuries of children and
adolescents." Med. Sci. Sports Exerc. 25(8): 1–7.
Stone M, F. A., Ritchie M,
Stoessel- Ross L, and Marsit J (1994). "Injury potential and safety
aspects of weightlifting movements." Strength Cond J 16: 15–21, .
Volek, J. S., A. L. Gómez, et
al. (2003). "Increasing fluid milk favorably affects bone mineral density
responses to resistance training in adolescent boys." Journal of the
American Dietetic Association 103(10):
1353-1356.
Ward, K. A., Roberts, S.A.,
Adams, J.E., and Mughal, M.Z. Felipe A. (2005). "Bone geometry and density
in the skeleton of prepubertal gymnasts and school children." Bone
Metabolism Research Unit, School of Health Sciences 36: 1012–1018.
Wysocki, T., M. A. Harris, et al. (2003). "Absence of
Adverse Effects of Severe Hypoglycemia on Cognitive Function in School-Aged
Children With Diabetes Over 18 Months." Diabetes Care 26(4): 1100-1105.