EduNews Magazine EdUnews May/June 2014 | Page 55

the data suggest that strength training will not result in training-induced muscle hypertrophy in preadolescents because of inadequate levels of circulating androgens. In adolescent females, muscular development is limited by a lower level of sex hormones. It is possible that other hormone and growth factors can contribute to muscle development in females.   Health-related benefits Children and adolescents should be encouraged to participate in a variety of sports and recreational activities to enhance their physical and psychological development and establish good health habits at an early age. Along with other types of physical activity, youth strength training has shown to have a positive influence on several measurable indices of health, including cardio-respiratory fitness, body composition, bone mineral density, blood lipids and selected psychological measures. One of the commonest misperceptions surrounding youth strength training is the belief that it could stunt the stature growth of children and adolescents. This myth seems to have been fuelled by an earlier report that suggested that children who performed heavy labour experienced damage to epiphyseal plates, which resulted in significant decrease in stature. Other causative factors, however, such as poor nutrition, were not accounted for in this study. Current observations indicate no evidence of a decrease in stature in children and adolescents who participate in well-designed youth strength training programmes. June/July 2014• •55