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Resistance training for children and adolescents.

ABSTRACT: As more children and adolescents are becoming involved in exercise and school or community based athletics, attention is turned towards proper training and conditioning to optimize performance, stimulate athletic development and ensure safety while tolerating long-term competition. Resistance training (RT) refers to the methodology of ensuring such optimal performance and safety. This is a common component of sports and physical fitness in schools and organized athletic programs around the country. RT is a physical conditioning program that involves various training techniques (e.g., machine based, free weight, plyometric, complex and functional training) and progressively increasing resistive loads to achieve desired muscle endurance, strength, power or a combination of the above. Proper RT programs have a plethora of associated benefits including increased strength, lower rates of sports-related injury, increased bone strength index (BSI), decreased risk of fracture and improved self-esteem and interest in fitness. There are risks involved with improper or poor training programs. Proper training programs involve knowledgeable trainers, effective supervision and tailored weight training.

SUBMITTER: Myers AM

PROVIDER: S-EPMC5532191 | biostudies-other | 2017 Jul

REPOSITORIES: biostudies-other

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Project description:BackgroundOver the past decades, an exponential growth has occurred with regards to the number of scientific publications including meta-analyses on youth resistance training (RT). Accordingly, it is timely to summarize findings from meta-analyses in the form of an umbrella review.ObjectivesTo systematically review and summarise the findings of published meta-analyses that investigated the effects of RT on physical fitness in children and adolescents.DesignSystematic umbrella review of meta-analyses.Data sourcesMeta-analyses were identified using systematic literature searches in the databases PubMed, Web of Science, and Cochrane Library.Eligibility criteria for selecting meta-analysesMeta-analyses that examined the effects of RT on physical fitness (e.g., muscle strength, muscle power) in healthy youth (??18 years).ResultsFourteen meta-analyses were included in this umbrella review. Eleven of these meta-analyses reported between-subject effect sizes which are important to eliminate bias due to growth and maturation. RT produced medium-to-large effects on muscle strength, small-to-large effects on muscle power, small-to-medium effects on linear sprint, a medium effect on agility/change-of-direction speed, small-to-large effects on throwing performance, and a medium effect on sport-specific enhancement. There were few consistent moderating effects of maturation, age, sex, expertise level, or RT type on muscle strength and muscle power across the included meta-analyses. The analysed meta-analyses showed low-to-moderate methodological quality (AMSTAR2) as well as presented evidence of low-to-very low quality (GRADE).ConclusionThis umbrella review proved the effectiveness of RT in youth on a high evidence level. The magnitude of effects varies according to the respective outcome measure and it appears to follow the principle of training specificity. Larger effect sizes were found for strength-related outcome measures. Future studies should consistently report data on participants' maturational status. More research is needed with prepubertal children and girls, irrespective of their maturational status.

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Resistance training for children and adolescents.

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