The effects of a resistance training program (Cross-Fit Teens) on physiological and psychological health in adolescents: A randomized controlled trial.

The CrossFit Teens Program: Evaluating intervention effects on adolescent body composition, fitness and psychological health.

Status

Completed

Phases

Phase 1

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12613001310752

Enrollment

100

Registered

2013-11-25

Start date

2013-07-15

Completion date

2013-07-17

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The aim of this study is to evaluate the feasibility and preliminary efficacy of a resistance training program (CrossFit Teens) for improving fitness, psychological adjustment, cognitive functioning, and self-esteem in secondary school students. Participants from Grades 9 & 10 in a NSW Secondary School will be randomly randomised by class into the intervention (CrossFit) conditions or into the control group (normal PE and sport lessons). The program will be delivered by qualified CrossFit instructors 2 x week (45-1hr) for 8 weeks. The study aims to answer the following research questions 1) What are the effects of CrossFit training on health-related fitness in adolescents? 2) What are the effects of CrossFit training on resistance training skill levels of adolescents? 3) What are the effects of CrossFit training on self-esteem in adolescents? 4) What are the effects of CrossFit training on psychological adjustment in adolescents? 5) What are the effects of CrossFit training on cognitive functioning in adolescents? Participants will be assessed before and after the intervention using a battery of physical tests and a questionnaire.

Interventions

The aim of this study is to evaluate the feasibility and preliminary efficacy of an 8 week resistance training program (CrossFit Teens) for improving fitness, psychological adjustment, cognitive functioning, and self-esteem in secondary school students. Research design: The study will involve a group-randomised controlled trial with participants randomised to treatment conditions by class group (Control or CrossFit Teens intervention) The CrossFit Teens program: Program:2 x week (45-1hr) Delivery: 2 x Qualified instructors Location: On school campus Cost: Sessions provided free of charge No. of participants: 15 - 30 per session Research questions 1) What are the effects of CrossFit training on health-related fitness in adolescents? 2) What are the effects of CrossFit training on resistance training skill levels of adolescents? 3) What are the effects of CrossFit training on self-esteem in adolescents? 4) What are the effects of CrossFit training on psychological adjustment in adolescents? 5) What are the effects of CrossFit training on cognitive functioning in adolescents? Recruitment, setting and participants One independent school from the Hunter Region will be recruited with a target recruitment of 60 students. The School Principal and Sports Organiser / Head of Sport will be contacted and invited to participate in the study. Eligible study participants will be adolescent boys and girls in Grade 9/10 (3rd and 4th year of secondary school) attending the school. All students with signed consent will be eligible to participate unless medically unable to participate. Intervention Overview of intervention. CrossFit Teens is a cross energy “threshold” program which is designed to improve strength, power, flexibility, speed accuracy, agility, cardiovascular endurance, stamina, co-ordination and balance (fitness components). The CrossFit methodology of programming is based on individual performance blended with the unique atmosphere of the “group training” and game setting to engage teenage participants.

Study design

Allocation

Randomised controlled trial

Intervention model

Parallel

Primary purpose

Educational / counselling / training

Masking

Blinded (masking used) (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

All

Age

14 Years to 18 Years

Healthy volunteers

Yes

Inclusion criteria

One independent school from the Hunter Region will be recruited with a target recruitment of 60 students. The School Principal and Sports Organiser / Head of Sport will be contacted and invited to participate in the study. Eligible study participants will be adolescent boys and girls in Grade 9/10 (3rd and 4th year of secondary school) attending the school. All students with signed consent will be eligible to participate unless medically unable to participate.

Exclusion criteria

Injury or illness preventing participation in assessments

Outcome results