- Title
- Implementing resistance training in secondary schools: a cluster randomized controlled trial
- Creator
- Kennedy, Sarah G.; Smith, Jordan J.; Dewar, Deborah L.; Estabrooks, Paul A.; Pollock, Emma; Finn, Tara L.; Lubans, David R.; Morgan, Philip J.; Peralta, Louisa R.; Hilland, Toni A.; Eather, Narelle; Lonsdale, Chris; Okely, Anthony D.; Plotnikoff, Ronald C.; Salmon, Jo
- Relation
- Medicine and Science in Sports and Exercise Vol. 50, Issue 1, p. 62-72
- Publisher Link
- http://dx.doi.org/10.1249/MSS.0000000000001410
- Publisher
- Lippincott Williams & Wilkins
- Resource Type
- journal article
- Date
- 2018
- Description
- Purpose: Guidelines recommend that young people engage in muscle-strengthening activities on at least 3 d·wk-1. The purpose of this study was to examine the effect of a school-based intervention focused on resistance training (RT) for adolescents. Methods: The "Resistance Training for Teens" intervention was evaluated using a cluster-randomized, controlled trial with 607 adolescents (50.1% girls; 14.1 T 0.5 yr) from 16 secondary schools. Teachers were trained to deliver the intervention, which included the following: (i) an interactive student seminar; (ii) a structured physical activity program, focused on RT; (iii) lunchtime fitness sessions; and (iv) Web-based smartphone apps. The primary outcome was muscular fitness (MF) and secondary outcomes included body mass index, RT skill competency, flexibility, physical activity, self-efficacy, and motivation. Assessments were conducted at baseline, 6 months (postprogram; primary end point), and 12 months (follow-up). Outcomes were assessed using linear mixed models, with three potential moderators tested using interaction terms (and subgroup analyses where appropriate). Results: For the primary outcome (MF), a group-time effect was observed at 6 months for the upper body (2.0 repetitions; 95% confidence interval (CI), 0.8-3.2), but not the lower body (-1.4 cm; 95% CI, -4.7-1.9). At 6 months, there were intervention effects for RT skill competency and self-efficacy, but no other secondary outcomes. Effects for upper body MF and RT skill competency were sustained at 12 months. Despite overall no effect for body mass index, there was a group-time effect at 12 months among students whowere overweight/obese at baseline (-0.55 kg·m-2; 95% CI, -1.01 to -0.08). Conclusions: The school-based RT intervention resulted in immediate and sustained improvements in upper body MF and RT skill competency, demonstrating an effective and scalable approach to delivering RT within secondary schools.
- Subject
- adolescent; muscular fitness; physical activity; physical education; skill competency
- Identifier
- http://hdl.handle.net/1959.13/1411062
- Identifier
- uon:36287
- Identifier
- ISSN:0195-9131
- Language
- eng
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