https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40780 Wed 20 Jul 2022 14:19:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23597 Wed 11 Apr 2018 16:32:58 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27083 2 h/day). In total, 322 adolescents (mean age = 14.4 ± 0.6 years) from eight secondary schools in New South Wales, Australia were recruited. The S4HM intervention was guided by Self-Determination Theory and included: an interactive seminar, eHealth messaging, a behavioral contract and parental newsletters. The primary outcome was recreational screen-time. Secondary outcomes included mental health (i.e., well-being, psychological distress, self-perceptions), objectively measured physical activity, and body mass index (BMI). Outcome analyses were conducted using linear mixed models and mediation was examined using a product-of-coefficients test. Results: At post-intervention, significant reductions in screen-time were observed in both groups, with a greater reduction observed in the intervention group (− 50 min/day versus − 29 min, p < 0.05 for both). However, the adjusted difference in change between groups was not statistically significant (mean = − 21.3 min/day, p = 0.255). There were no significant intervention effects for mental health outcomes, physical activity or BMI. Significant mediation effects for autonomous motivation were found. Conclusions: Participants in both the S4HM intervention and control groups significantly reduced their screen-time, with no group-by-time effects. Enhancing autonomous motivation might be a useful intervention target for trials aimed at reducing adolescents' recreational screen-time.]]> Wed 11 Apr 2018 16:06:47 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:15173 Wed 11 Apr 2018 15:53:51 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29918 Wed 11 Apr 2018 10:23:06 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18850 Wed 11 Apr 2018 09:33:45 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37740 Wed 07 Apr 2021 19:34:52 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29895 Wed 06 Nov 2019 12:48:57 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20821 Wed 04 Sep 2019 11:04:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49038 Wed 03 May 2023 13:48:10 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36330 Wed 01 Apr 2020 12:47:03 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35125 Tue 23 Jun 2020 12:08:42 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42459 Tue 23 Aug 2022 12:04:20 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17560 Tue 16 Jun 2015 20:07:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41183 Tue 05 Sep 2023 14:58:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39930 Thu 30 Jun 2022 13:12:38 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36287 -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.]]> Thu 19 Mar 2020 17:51:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48041 Thu 16 Feb 2023 13:59:00 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40485 B, 4.00; 95% confidence interval, 2.96–5.04; d = 0.36). Regarding the participants’ competence and autonomy need satisfaction, and autonomous motivation, the intervention effects were stronger in girls, compared with boys. Conclusions: Fitness infusion and game-like elements, used according to self-determination theory principles, can enhance students’ physical activity and motivation toward PE. This low-cost intervention has the potential to be scaled up and disseminated in secondary schools.]]> Thu 14 Jul 2022 08:52:17 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25396 Thu 03 Feb 2022 12:20:49 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33483 Thu 03 Feb 2022 12:19:16 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20217 Sat 24 Mar 2018 08:06:51 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21720 Sat 24 Mar 2018 07:52:44 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38346 Mon 30 Aug 2021 15:53:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49709 Mon 29 May 2023 13:14:46 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38387 200) deemed 'hazardous' by the Australian Department of Health did children's physical activity decline. Public health agencies should re-evaluate the effectiveness of health messages during bushfires and develop strategies to mitigate risks to children's health.]]> Mon 29 Jan 2024 17:45:19 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30354 N = 731 students; M = 14.38 years; all from Secondary 2) from 12 Hong Kong schools during September to December 2013. The primary outcome was percentage of lesson time spent in MVPA. Secondary outcomes included students' vigorous activity, counts per minute, perceived autonomy support and motivation for physical education. Accelerometer-based activity measures were taken from a sub-sample of 168 students during lessons 1 to 3 (baseline) and lessons 5 to 7 (treatment phase). Participants self-reported motivation variables at lessons 4 and 8. Teachers allocated to the experimental group included an intervention during treatment phase; those in the control group continued usual practices. The intervention involved a 15-minute rope skipping activity where students completed intervals of skipping with rests in between. Using multilevel modeling, we examined the intervention effects on measured outcomes, and whether effects differed for boys and girls. Overall intervention effects were not found. However, girls in the intervention group spent more time in MVPA (β = 0.25) and had higher counts per minute (β = 0.32) than control group counterparts at treatment phase. Perceived autonomy support and motivation variables were similar across groups. The intervention increased activity levels of girls, but not boys. Implementation of the intervention may reduce differences between boys' and girls' physical education activity levels.]]> Mon 29 Aug 2022 15:03:10 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36638 Mon 29 Aug 2022 13:38:28 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31355 Mon 23 Sep 2019 11:56:32 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54770 Mon 11 Mar 2024 15:08:40 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37823 Mon 10 May 2021 15:39:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35711 Fri 19 Aug 2022 12:27:53 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41494 Fri 05 Aug 2022 08:54:26 AEST ]]>