The Youth Strength Training Myth: Is Lifting Weights Safe for Children?
For years, parents were told that children lifting weights was dangerous. It would stunt their growth, damage their joints, make them bulky, or put too much stress on a body that was still developing.
Most of that advice has not aged well.
The bigger risk for many children today is not that they are lifting too much weight. It is that they are not getting strong, coordinated, confident and physically capable enough in the first place.
At Sussex Performance Centre, we work with children from a wide range of backgrounds. Some play football, rugby, cricket, netball or athletics. Some are already sporty. Some are not. Some arrive full of confidence. Others walk in quietly, unsure if the gym is really a place for them.
The aim is not to turn children into mini bodybuilders. It is to help them move better, get stronger, reduce injury risk, build confidence and develop habits that can stay with them for life.
When people hear “children lifting weights”, they often picture a child being loaded up with a heavy barbell and told to grind out a max lift. That is not youth strength training.
A proper youth strength programme is much broader than that. It may involve bodyweight exercises, jumping and landing drills, medicine ball throws, carries, sled pushes, resistance bands, light dumbbells, coordination drills, skipping, running mechanics and basic gym-based strength work. The weight is only one tool.
For younger children, strength training is often about learning how to control their own body. Can they squat well? Can they land from a jump without their knees collapsing? Can they brace their trunk? Can they change direction? Can they carry something safely? Can they push, pull, hinge, rotate and run with decent mechanics?
That is strength training. It just does not always look like what adults expect.
Old beliefs
The old belief that strength training damages growth plates or stunts growth is still repeated, but it is not supported by the modern evidence when the training is properly supervised and age appropriate. The National Strength and Conditioning Association has stated that youth resistance training can be safe and effective when programmes are properly designed and supervised by qualified professionals.
The 2014 International Consensus Position Statement on youth resistance training, adapted from the UK Strength and Conditioning Association position statement, also supports resistance training for children and adolescents when coaching, progression and technique are prioritised.
This does not mean anything goes. It means the issue is not strength training itself. The issue is poor coaching, inappropriate loading, lack of supervision and treating children like small adults.
Children are already exposed to high forces every day. They sprint across playgrounds, jump off climbing frames, wrestle with friends, play sport, fall over, land awkwardly and carry school bags around all day. Nobody panics when a child sprints flat out after a football, even though sprinting places large forces through the body. Nobody panics when a child jumps off a wall, even though landing can create forces several times their bodyweight.
But hand that same child a light dumbbell and suddenly people worry.
What is the aim of youth training?
The aim of youth strength training is not to add unnecessary stress. It is to prepare children for the stress they already meet in sport and life. A stronger child is usually a more robust child. Not invincible. Not injury-proof. But better prepared.
A lot of children today specialise early in one sport, spend less time playing outside and then get asked to perform high-speed, high-skill movements without much physical preparation underneath. That is a problem.
A child might play football three times per week but still struggle to squat, balance on one leg, decelerate, land or change direction with control. Sport alone does not automatically build all the qualities a young person needs.
Strength training helps fill in the gaps. It can improve lower-body strength, upper-body strength, core control, balance, landing mechanics, coordination, speed, power, confidence and body awareness. For young athletes, this matters. If a child wants to run faster, jump higher, change direction better and tolerate the demands of sport, strength matters.
If a child is not sporty, it still matters. Strength gives them more confidence in PE, playgrounds, clubs, holidays, family walks and everyday life.
A lot of adult fitness is built around fatigue. Sweat more, burn more, go harder, feel destroyed. That is not how good youth training should be judged.
How hard should they train?
Children do not need to be crushed by a session to get benefits. In fact, if every session is just a hard circuit, they often learn very little. A good youth session should have structure. There should be movement quality, skill, strength, coordination, some conditioning and a bit of fun. The child should leave feeling challenged but successful.
They should be able to say, “I got better at something today.”
That might be their first proper press-up. It might be a better squat, a stronger carry, a cleaner landing, a faster sprint or a new movement they were nervous about trying. Those small wins matter because they build confidence and buy-in.
No programme can guarantee injury prevention. Children can still get injured. Sport is unpredictable. But the evidence suggests that well-designed strength and conditioning can reduce injury risk in young athletes.
That makes sense when you think about the demands of sport. A child playing football, rugby, netball or tennis needs to accelerate, decelerate, twist, jump, land, brace, tackle, change direction and repeat all of that while tired. If they have poor hip strength, weak hamstrings, limited trunk control and poor landing positions, the body has fewer options when things get chaotic.
Strength training gives them more tools. It teaches them how to absorb force, produce force and control their body under pressure. That is not just useful in the gym. It transfers to the pitch, court, track and playground.
Common misconceptions
Another common misconception is that youth strength training is only for children in academies, county squads or competitive sport. It is not.
Yes, young athletes benefit from strength and conditioning. But so do children who simply need more confidence, more coordination and more structured movement in their week.
Some children are naturally active. Others are not. Some love team sports. Others hate them. Some need help with confidence. Some need a safe place to learn how their body works without feeling judged.
That is where a coached environment helps. The gym can be a brilliant place for children when it is done properly. Not an adult gym environment where they are left to copy random exercises, but a proper youth environment that is coached, structured, encouraging, progressive, safe and enjoyable.
Youth strength training works best when the basics are respected. Technique comes before load. Progression is gradual. Sessions are supervised. Exercises match the child, not the other way round. Training is age appropriate. The child enjoys it. The coach understands how to work with young people. The goal is long-term development, not short-term ego.
Children should not be rushed into heavy lifting. They should earn progress through consistency, control and confidence. That might mean starting with bodyweight movements and games. It might mean using light dumbbells, medicine balls and resistance bands. It might eventually mean using barbells, kettlebells and more advanced exercises. There is no need to force it.
The best youth training gives children time to develop
Instead of asking, “Is lifting weights safe for my child?”, a better question is, “Is this programme coached properly?”That changes everything.
Who is coaching the session? Are they qualified and experienced? Is technique being taught? Are the children supervised? Is the programme progressive? Are exercises adapted to different abilities? Is the environment supportive? Is the focus on development, not punishment? Does my child enjoy going? Those are the questions that matter.
A poorly coached session can be a problem, whether it uses weights, running, circuits or sport drills. A well-coached strength session can be one of the best things a child does each week.
SPC Youth is built around helping children become stronger, fitter, more coordinated and more confident. We teach the basics properly. We help children learn how to squat, hinge, push, pull, carry, jump, land, run, brace and move well.
We also make sure the sessions are enjoyable, because children need to want to come back. For some, the benefit is better sport performance. For others, it is confidence. For some, it is learning how to train. For others, it is simply finding a form of exercise they enjoy. All of those are valid.
Not every child needs to be an athlete. But every child benefits from being stronger, more capable and more confident in their own body.
The myth that children should avoid strength training has probably held more young people back than it has protected. The evidence is clear enough now. Children can strength train. In many cases, they should strength train. But they should do it in the right environment, with the right coaching and the right progression.
Done properly, youth strength training is not about heavy weights and adult gym culture. It is about building better movers, stronger children, more confident children and more resilient children.
That is a good foundation for sport. It is an even better foundation for life.
References
Faigenbaum, A. D., Kraemer, W. J., Blimkie, C. J. R., Jeffreys, I., Micheli, L. J., Nitka, M., & Rowland, T. W. (2009). Youth resistance training: Updated position statement paper from the National Strength and Conditioning Association. Journal of Strength and Conditioning Research, 23(5 Suppl), S60–S79.
Lloyd, R. S., Faigenbaum, A. D., Stone, M. H., Oliver, J. L., Jeffreys, I., Moody, J. A., Brewer, C., Pierce, K. C., McCambridge, T. M., Howard, R., Herrington, L., Hainline, B., Micheli, L. J., Jaques, R., Kraemer, W. J., McBride, M. G., Best, T. M., Chu, D. A., Alvar, B. A., & Myer, G. D. (2014). Position statement on youth resistance training: The 2014 International Consensus. British Journal of Sports Medicine, 48(7), 498–505.
Myers, A. M., Beam, N. W., & Fakhoury, J. D. (2017). Resistance training for children and adolescents. Translational Pediatrics, 6(3), 137–143.
Dahab, K. S., & McCambridge, T. M. (2009). Strength training in children and adolescents: Raising the bar for young athletes? Sports Health, 1(3), 223–226.
Behringer, M., vom Heede, A., Yue, Z., & Mester, J. (2010). Effects of resistance training in children and adolescents: A meta-analysis. Pediatrics, 126(5), e1199–e1210.
Lloyd, R. S., et al. (2016). National Strength and Conditioning Association Position Statement on Long-Term Athletic Development. Journal of Strength and Conditioning Research, 30(6), 1491–1509.
