New guidance debunks myths and highlights safety of strength training for children and teens

Recent guidance from paediatric experts confirms that, when supervised appropriately, resistance training is safe and beneficial for children and teenagers, challenging long-standing misconceptions and emphasising age-appropriate exercise practices.

Strength training can be safe for children and teenagers, and for many young people it can be beneficial when it is introduced sensibly. The long-standing fear that lifting weights will stunt growth is not supported by evidence, according to the American Academy of Pediatrics. Instead, the key issues are supervision, technique and age-appropriate programming.

That distinction matters. The academy says resistance training should not be confused with powerlifting or bodybuilding, which are not recommended for younger children. The Mayo Clinic makes a similar point, saying that many young people can build strength using body-weight exercises, resistance bands or light weights, provided the movements are controlled and the emphasis stays on form rather than load.

Research and guidance from paediatric specialists suggest that well-designed programmes can do more than build muscle. They may improve bone health, body composition, coordination and overall fitness, while also helping to reduce the risk of sports-related injury. HealthyChildren.org, an American Academy of Pediatrics resource, says resistance training can be useful for children of all ages when it is properly supervised.

There may also be mental and developmental benefits. Strength work can help young people feel more capable, improve confidence and support healthier exercise habits that last into adulthood. For some children and teenagers with medical conditions or physical limitations, carefully adapted resistance training can also form part of a broader approach to staying active.

The safest way to begin is modestly. That means a qualified coach or trainer with experience in youth training, adult supervision at every session and exercises tailored to the child’s age and ability. Warm-ups, light resistance, controlled repetitions and gradual progress are all important, and teens should avoid trying to lift heavy weights before they have learned good movement patterns. The American Academy of Pediatrics advises medical evaluation before starting a programme and recommends trained instructors with paediatric strength-training certification.