- By: Pedro Candeias
- Date: 02/11/2017
Youth Physical Development Model: A Scientific Compass for Every Karate Sensei!! (Part 1)
What’s the first thing you should do, when you finish reading this post?
SAVE THE TWO TABLES we put inside this article about Children and Adolescents training. Save them where you have the easiest access and use them everytime you have a doubt! No matter if it’s your smartphone or your laptop. If you are a “pencil and paper” teacher, print the tables and attach them to your notes.
When you have doubts about what to prioritize in your Karate classes – from 2 to +21 years old -, consult the tables… Don’t come up with fancy but unappropriate exercises for each of those ages! We’re talking about next generations health and development.
You, as a Karate coach, have the responsability of optimising your young students abilities while respecting their developmental stages. There are some critical periods where you should give more attention to some skills…
WHAT IS THE “YOUTH PHYSICAL DEVELOPMENT MODEL”?
Fortunately, the scientific researchers Rhodri Lloyd and Jon Oliver created this model as a practical and easy-to-follow guide to every sport’s trainer or teacher. And most important, based on the scientific evidences available only 4 or 5 years ago (2012). To our knowledge, since that period, there wasn’t a new model (and so rigorous) being presented.
Nevertheless, we all have to look to Youth Physical Development Model in a dynamic and evolutional way. Because Science is always giving us new knowledge. Don’t you ever forget this!!
YPD-Model is a complete and global approach to the development of young males and females. It gives us the athletic development from early childhood (2 years of age) up to adulthood (+21 years of age).
Rhodri and Oliver (2012) expect that this Youth Physical Development Model provide to sport’s coaches , physical educators and even parents an easy-to-follow tool. A tool that gives you, as a Karate Sensei, an overview of global physical development… And the better part, when and why each fitness component should be emphasized!!
HOW TO INTERPRET THE YOUTH PHYSICAL DEVELOPMENT TABLES?
As you can see in the tables, training priority is highlighted by a bigger font size. The greater the font size, the more important is to train that fitness quality! Thank you Rhodri Lloyd and Jon Oliver. For us, in Karate Science Academy, Science is this: simple, useful and practical tools for all the professionals that work in the field (like Dojos)!
Practical Example (the same that appears in the original paper from Lloyd and Oliver, 2012):
“The model shows that a 12- to 13-year-old boy should primarily focus their training on strength, power, speed, agility and sport-specific skill (SSS) development, with a reduced focus on hypertrophy, mobility, fundamental movement skill (FMS), endurance and metabolic conditioning”
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FUNDAMENTAL MOVEMENT SKILL AND SPORT-SPECIFIC SKILL
Fundamental Movement Skill (FMS) are the building blocks for sport-specific movement patterns. In karate, Sport-Specific Skills are Kihon, Kata, Kumite, etc. You, as a good Karate coach, should deconstruct these 3 fundamental dimensions of Karate into general motor pre-requisites. Please, don’t beat down your 7 or 8 years old students with old-school long number of repetitions of the same exercise!! They don’t deserve that…
Science shows us that more variability of the same stimulus is extremely beneficial for their athletic development in the long term, for their health and for their sport practice habits at adult ages.
If they have more motor solutions (physical, cognitive and perceptual) they’ll have more performace solutions when they become athletes. And hard routines leave to an early dropout from great talents!!
Too many repetitions of the same exercises, movements and positions will have a negative effect on your kids joints, for example.
And yes, you have the responsability to ensure that all the kids and adolescents that pass by your Dojo create an excellent relationship with exercise and sport practice. One of the most correlated factors with regular sport practice in the adult age is the enjoyment and satisfaction we all have in our physical activity experiences in childhood! Yes, you must convince yourself that most of the kids that go to your Dojo won’t be training Karate when they are adults… They will not be the next champion or grand-master. You have an important role in their future health!
FMS should be the focus of physical development programs for children from early childhood to develop gross motor skills. This doesn’t mean you don’t teach them Karate! You should teach them Kihon, basic sequences, Kumite games, etc. But always with the main goal of opening their mental and motor structure as wide as you can… Not with the strict objective of make them the best in Kata or in Kihon. They’ll have time for that a few years later.
From the onset of puberty, adolescents can and should then be exposed to more Specific-Sport Skill (specific Karate technique).
It must be noted that FMS should always be present in any Karate class, no matter your students age or goals! So, what’s the difference?
For example, for an inexperienced 7-year-old boy or girl the training emphasis should be around FMS developmental exercises. Whereas a young, elite, 21-year-old Karateka may integrate FMS maintenance exercises in a dynamic warm-up.
As you can see in the tables, FMS and SSS are present at all times throughout childhood and adolscence, but with different priority.
STRENGTH AND YPD-MODEL
Despite many myths still prevail when we are talking about strength training for Kids, Science shows us that children and teenagers can safely and effectively participate in strength training! Of course, when that training is prescribed and supervised by qualified Karate teachers. To know more, please read DESTROY THE MYTH: “Strength Training is Bad for Children and Young Karateka”.
Always remember this: Hypertrophy is not the only way of increasing strength!! Strength development results from a combination of muscular, neural and mechanical factors.
In the prepubertal years (before about 10-11 years old in girls and 11-12 years old in boys) your Karate students have a greater neural plasticity. At that time, development of the neuromuscular system naturally accelerates. So, your youngest kids will largely benefit from proper strength training due to these neural adaptations.
The Youth Physical Development Model shows that the development of muscular strength should be a priority at all stages of development for boys and girls. This is important, because Karate depends a lot of speed and power. And strength is the basis for those physical outputs.
Remember that the strength levels are also important for reducing the risk of sports-related injuries.
High Aerobic Fitness + Low Levels of Muscle Strength = Bigger Risk of Fracture in Children.
In the next post, we will frame other physical skills in the Youth Physical Development Model. Stay tunned and thank you for following Karate Science Academy!
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P.S. – Did you notice that YPD has different tables for boys and girls? Keep that in mind when you are training your Karate students and thletes.