The use of weights is an increasingly popular conditioning technique,
competitive sport and recreational activity among children, adolescent
s and young adults. Weight-training can cause significant musculoskele
tal injuries such as fractures, dislocations, spondylolysis, spondylol
isthesis, intervertebral disk herniation, and meniscal injuries of the
knee. Although injuries can occur during the use of weight machines,
most apparently happen during the aggressive use of free weights. Prep
ubescent and older athletes who are well trained and supervised appear
to have low injury rates in strength training programmes. Good coachi
ng and proper weightlifting techniques and other injury prevention met
hods are likely to minimise the number of musculoskeletal problems cau
sed by weight-training.