The IYCA's rule: stop training kids like small adults. Here's how to develop young athletes for the long game.
Running a child on an adult strength or bodybuilding program misses everything that matters at their stage - and often pushes them out of sport. The IYCA's long-term athletic development view flips it: build broad movement competence first, match training to the child's maturation, delay early specialisation, and keep it enjoyable. This breakdown covers their case in our own words, adds our take for coaching youth, and keeps the safeguarding and medical lines exactly where they belong.
By Markus Evers · September 2026 · a Coachway video breakdown
the short version
The IYCA's case is that children aren't small adults, so youth training should be built around their stage of development, not a shrunken adult program: prioritise broad movement competence and athleticism first, match the work to maturation rather than age, delay early specialisation, and keep it enjoyable so kids stay in sport. The one thing a coach should do about it: stop scaling down adult programs for young athletes - build the movement base first, progress by developmental stage, and keep the whole thing age-appropriate, well-supervised and enjoyable. Medical and safeguarding questions stay with the right professionals.
IYCA - Stop Coaching & Training Kids Like Mini-Adults
Source: The IYCA on YouTube - "Stop Coaching & Training Kids Like Mini-Adults". Watch on YouTube. We embed the public video and summarise it in our own words; the video, title and channel belong to the International Youth Conditioning Association, and nothing here implies their endorsement of Coachway.
Who is the IYCA, and why coaches watch
The International Youth Conditioning Association (IYCA) is an education and certification body focused specifically on training young athletes - long-term athletic development, youth strength and conditioning, and coaching kids in an age-appropriate way. It's one of the best-known names for coaches who want to work with youth properly rather than by scaling down adult methods. Coaches watch the IYCA because youth training is genuinely its own discipline, with its own priorities and its own risks, and getting it right shapes whether a young person becomes a lifelong athlete or an early dropout. This "don't train kids like mini-adults" message is the heart of their philosophy, which is the lens this page is written for.
What the IYCA actually argues (our summary)
This is our summary of the ideas in the video, in our own words - not a transcript. Watch the original for their exact framing and examples.
- 1
Kids aren't mini-adults. Their coordination, physiology and motivation differ, and they're growing - so adult programs don't fit their needs.
- 2
Build broad athleticism first. Fundamental movement skills - run, jump, land, throw, catch, balance, cut - across varied activities come before specialised training.
- 3
Match training to maturation. The child's stage of development - not just their age - guides what you train and how much, since same-age kids can differ a lot.
- 4
Delay early specialisation. Specialising too young narrows the athlete and raises overuse and burnout risk - varied, multi-skill development builds better long-term athletes.
- 5
Keep it enjoyable. Fun, variety and autonomy keep kids in sport - the goal is a lifelong athlete, not a peak at twelve.
Coachway's take
We think this is important and easy to get wrong, especially as more coaches take on youth clients. The temptation is to hand a keen 12-year-old a slightly lighter version of an adult program, and it usually backfires - too specialised, too monotonous, too focused on load and numbers, and it either bores them out of training or over-stresses a developing body. The IYCA's movement-first, development-led approach is the right default, and the "keep them in sport for life" framing is the outcome that actually matters.
Where we'd sharpen it for a coaching business: coaching youth online is really coaching the parent as much as the child. The parent is usually the one supervising, setting up equipment and reporting back, so the program has to be genuinely age-appropriate, clearly explained, and built around movement quality and enjoyment rather than chasing loads. Realistic, non-pressuring framing matters too - the fastest way to lose a young athlete is to make training feel like a job.
A scope and safeguarding note, because this involves minors. This is coaching education about how youth training should be structured - not medical advice. Coaching young athletes requires appropriate qualifications and safeguarding, meaningful parent or guardian involvement, and an age-appropriate environment. Growth concerns, injuries, pain or any medical question go to a pediatrician or qualified medical professional, and a coach refers those out and works within the family's and clinicians' guidance. Keep resistance training supervised, technique-first and appropriately progressed, and always prioritise the young person's welfare over performance.
So our version of their approach is: build broad movement competence first, progress by developmental stage rather than age, delay specialisation, keep it varied and genuinely enjoyable, coach the parent alongside the child - and hold the safeguarding and medical lines firmly, referring anything beyond training out.
Age-appropriate programs the parent can run
Youth coaching online works when the program is age-appropriate, movement-first and easy for a parent to deliver. In Coachway you build the young athlete's development program in the workout builder - fundamental movement skills, varied activities, technique-first progressions matched to their stage - with clear demonstrations so whoever supervises can run it well. Development and enjoyment come back through check-ins, kept age-appropriate and low-pressure, so you track movement quality and engagement rather than piling on load. The philosophy is the IYCA's; the platform just keeps the program clear for the family and the coaching in the training lane.
For the athletic-development side around it, the companion breakdowns on Lee Taft on speed and agility and Mike Boyle on single-leg training cover movement skills that scale from young athletes upward.
The youth development checklist (age-appropriate)
A short checklist for keeping a young athlete's program development-led rather than a scaled-down adult plan. Adapt each row to the child's stage - and keep the safeguarding and medical lines firm.
Youth development checklist
| Principle | Do | Why |
|---|---|---|
| Movement first | Build fundamental skills across varied activities | A wide base to specialise from later |
| Stage, not age | Match load and complexity to maturation | Same-age kids differ a lot in development |
| Delay specialising | Keep it multi-skill; avoid year-round one sport | Lowers overuse and burnout, builds athletes |
| Enjoyment | Fun, variety, autonomy; low performance pressure | Keeps kids in sport for the long game |
| Safeguard | Qualified coaching, parent involved, refer medical | Welfare first; stay in the training lane |
How to use it: keep a young athlete's program movement-first and matched to their developmental stage, varied and enjoyable, and progressed conservatively. Coaching education only, not medical advice - coach youth with appropriate qualifications and safeguarding, involve the parent or guardian, and send growth, injury or medical questions to a pediatrician.
YOUTH DEVELOPMENT CHECKLIST (via Coachway) - keep a young athlete's program development-led, not a scaled-down adult plan - MOVEMENT FIRST -> build fundamental skills across varied activities | a wide base to specialise from later - STAGE, NOT AGE -> match load and complexity to maturation | same-age kids differ a lot in development - DELAY SPECIALISING -> keep it multi-skill; avoid year-round one sport | lowers overuse and burnout, builds athletes - ENJOYMENT -> fun, variety, autonomy; low performance pressure | keeps kids in sport for the long game - SAFEGUARD -> qualified coaching, parent involved, refer medical | welfare first; stay in the training lane HOW TO USE: Keep a young athlete's program MOVEMENT-FIRST and matched to their developmental STAGE (not just age), varied and genuinely enjoyable, and progressed conservatively. COACHING EDUCATION ONLY - not medical advice. Coach youth with appropriate qualifications and safeguarding, involve the parent/guardian, keep resistance training supervised and technique-first, and send growth, injury, pain or any medical question to a pediatrician or qualified medical professional. Welfare over performance, always.
Youth athletic development - FAQ
Why can’t you train kids like scaled-down adults?
Because children aren't just smaller adults - their coordination, physiology, attention and motivation are different, and they're growing, which changes what training does and what they need from it. Running a child on an adult bodybuilding or maximal-strength program misses the developmental priorities that actually matter at their stage: broad movement skill, coordination, and a positive relationship with being active. The long-term athletic development view is that youth training should be built around the child's stage of development, not a shrunken version of what works for a 25-year-old. Get that wrong and you either bore them out of sport or narrow them too early.
What should youth training actually prioritise?
Broad athleticism and fundamental movement skills first - running, jumping, landing, throwing, catching, balancing, changing direction - across varied activities, so the child builds a wide movement base they can later specialise from. Coordination and skill acquisition are the priority in the earlier stages, with structured strength and conditioning introduced appropriately as the child matures. Underneath all of it, enjoyment and autonomy keep kids in sport, which is the real long game. The specifics are matched to the child's maturation stage rather than their birthday, because two kids the same age can be at very different points of development.
Is strength training safe for kids?
Supervised, technique-first, appropriately-loaded resistance training is widely regarded as safe and beneficial for young people by major position stands, and the old 'lifting stunts growth' idea isn't supported - the real risks come from poor supervision, bad technique and inappropriate loading, not from the concept itself. That said, it has to be delivered by someone competent to coach youth, with progression that suits the child's stage and always prioritising quality of movement over load. As a coach, you stay firmly in the training lane: age-appropriate, well-supervised programming - and anything medical goes to the appropriate professional.
What about safeguarding and medical questions with young athletes?
They're central, and they sit around the coaching rather than inside it. Coaching minors requires appropriate qualifications and safeguarding practice, meaningful parent or guardian involvement, and an environment that keeps performance pressure age-appropriate. This page is coaching education about how youth training should be structured - it is not medical advice. Growth-related concerns, injuries, pain, or any medical question belong with a pediatrician or qualified medical professional, and a coach refers those out and works within whatever guidance the family and their clinicians provide. The coach's job is the movement and the development, delivered safely; the medical and safeguarding frame is non-negotiable.
More athletic-development breakdowns
- · Lee Taft on speed and agility - movement skills that scale from young athletes up.
- · Mike Boyle on single-leg training - joint-friendly strength for athletes.
- · The full library: fitness creator coaching breakdowns.
Develop athletes at every age
all guidesLee Taft on Coaching Speed and Agility (Coach Breakdown)
Lee Taft's speed and agility method, broken down for coaches: coach change-of-direction as a teachable skill - deceleration first, then plant and redirect mechanics - with reactive drills that transfer to the sport.
Read the guideMike Boyle on Single-Leg Training for Athletes (Coach Breakdown)
Mike Boyle on unilateral training, broken down for coaches: make loaded single-leg strength the primary lower-body method for multi-directional athletes - better sport transfer, exposed asymmetries and lower spinal load than a bilateral back squat.
Read the guideStew Smith on Periodizing the Tactical Athlete (Coach Breakdown)
Stew Smith on periodizing the tactical or occupational athlete, broken down for coaches: phase from an aerobic-endurance base into a strength block, emphasising one quality at a time so a broad-capability client peaks for the demand.
Read the guideFree tools for this: Macro Calculator · One-Rep-Max Calculator · Warm-Up Set Calculator
Coach young athletes the right way
Youth training works when the program is age-appropriate, movement-first and easy for a parent to run. In Coachway you build development-led programs in the workout builder with clear demos and track movement quality and enjoyment in check-ins - welfare first, load second. Start your 14-day free trial and develop athletes for the long game.
