How Old Should My Kid Be When Starting a Training Program?

We hear questions and comments like these all the time:

• “Does lifting stunt your child’s growth?”
• “My kid doesn’t need strength training, just speed training.”
• “My 9-year-old needs hockey-specific workouts.”

There’s a lot of noise out there about youth training, and we’re here to cut through it with science, experience, and perspective. Let’s bust some myths and set the record straight on what youth strength and conditioning really looks like.

​MYTH: “Lifting Stunts Your Growth”
This myth just won’t die but research shows no evidence that properly structured strength training stunts growth in kids. In fact, when designed and supervised appropriately, resistance training can:

• Improve coordination and motor skills
• Boost bone density and strength
• Enhance muscular control and movement efficiency

What can be harmful is placing young kids in unsupervised, high-load Olympic lifting programs far beyond their maturity. But that’s a far cry from what youth strength and movement training should be.
Science says: Supervised resistance training in children and adolescents is safe and beneficial when following evidence-based guidelines [(Faigenbaum et al., 2009)].

​What Should Youth Training Actually Include?
A well-rounded program should include:

• A variety of movement types: jumping, running, landing, cutting, and yes, some form of strength training
• Fun, challenge, and variety to keep them engaged
• Safe and progressive exposure to loading and resistance
• Supportive, knowledgeable coaches who know how to motivate young athletes

Structured programs aren’t just about getting stronger, they’re about building foundational movement skills, improving confidence, and instilling a love of physical activity. Studies support that varied movement and neuromuscular training can help reduce injury risk and improve performance [(Lloyd et al., 2014)].

​The Science of Growing Bodies 
Resistance training during youth has powerful physiological benefits:

• Bones Get Stronger
  • Proper loading stimulates bone-forming cells called osteoblasts, which helps increase bone density during key growth years [(Vlachopoulos et al., 2018)].
• Muscles Get Smarter
  • Even without high levels of testosterone, kids can gain strength through:
    • ​​Better motor unit recruitment
    • Increased muscle fiber efficiency
    • Improved neuromuscular coordination [(Behm et al., 2008)]

Translation? They move better, faster, and more confidently.

​Speed Training Starts with Strength & Skill 
Speed doesn’t just “happen” — it’s built on two things:

• Force production 
• Motor patterning 

Young athletes often lack both. Add in less free play and more screen time, and many kids today haven’t developed the movement foundation needed for sport. The good news? Strength training improves sprinting and change-of-direction ability when done consistently and age-appropriately [(Suchomel et al., 2016; Muehlbauer et al., 2013)].

​So, When Should Kids Start Training?
The truth? Movement starts as soon as they can walk. My own child has been part of our gym community since he could talk, not lifting weights, but playing, crawling, climbing, and learning movement through fun. As attention span develops (around age 6–8), more structured training can begin. The sweet spot is when your child can focus for 20–30 minutes, take cues, and have fun under guidance.

But here’s a critical safety tip: if your child plays contact sports, they should build a solid strength base, especially neck strength, for at least a year post-puberty before competition. This has been linked to lower concussion risk [(Collins et al., 2014; Mihalik et al., 2011)].

​Don’t Fall for “Sport-Specific” Promises 
We often hear statements like: “My 9-year-old needs hockey-specific training.” Here’s what we know from both experience and research:

• Early specialization leads to burnout and injury
• Overuse injuries in youth athletes are on the rise
• Single-sport athletes under age 12 are at greater risk 

If a coach pushes sport-specific training without explaining how it fits into your child’s development, run the other way.
Research is clear: multi-sport or diversified movement programs lead to healthier, more resilient athletes [(Jayanthi et al., 2015; DiFiori et al., 2014)].

Final Thoughts
Youth training is not about “pushing hard” or building muscle. It’s about:

• Creating movement confidence
• Laying a foundation for performance
• Making physical activity a fun and lifelong habit

If you’re wondering when your child should begin our answer is: as soon as they can move, and always under a watchful eye that puts fun, safety, and variety first.

References:
Behm, D. G., et al. (2008). Youth resistance training: Updated position statement. NSCA Journal.
Collins, C. L., et al. (2014). Neck strength as a protective factor in sport-related concussion. Journal of Primary Prevention.
DiFiori, J. P., et al. (2014). Overuse injuries and burnout in youth sports. British Journal of Sports Medicine.
Faigenbaum, A. D., et al. (2009). Youth resistance training: Clinical applications. ACSM's Health & Fitness Journal.
Jayanthi, N. A., et al. (2015). Sports specialization in young athletes: Evidence-based recommendations. Sports Health.
Lloyd, R. S., et al. (2014). Position statement on youth resistance training. British Journal of Sports Medicine.
Mihalik, J. P., et al. (2011). Does cervical strength protect against concussions? Sports Medicine.
Muehlbauer, T., et al. (2013). Effects of strength training on movement skills in youth. Sports Medicine.
Suchomel, T. J., et al. (2016). The role of muscular strength in athletic performance. Sports Medicine.
Vlachopoulos, D., et al. (2018). High-impact training and bone health in adolescents. Osteoporosis International.

Written by Joseph Pearson, Owner of The Strength Feed.