Publications by authors named "Michalis Stylianou"

Article Synopsis
  • The study reviews the 24-hour movement behaviors of LGBTQA+ young people, highlighting significant health challenges they face compared to general population guidelines.
  • Fifty-six studies were analyzed, revealing that LGBTQA+ individuals are less likely to meet both physical activity and sleep guidelines, particularly among children and adolescents.
  • The findings suggest a need for better measurement tools and more focus on improving sleep and reducing sedentary behavior in LGBTQA+ youth.
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This systematic review and meta-analysis assessed the effectiveness of physical activity interventions on undergraduate students' mental health. Seven databases were searched and a total of 59 studies were included. Studies with a comparable control group were meta-analysed, and remaining studies were narratively synthesized.

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Background: Despite a growing body of research investigating high-intensity interval training (HIIT) in schools, there are limited process evaluations investigating their implementation. This is concerning because process evaluations are important for appropriately interpreting outcome findings and augmenting intervention design. This manuscript presents a process evaluation of Making a HIIT, a school-based HIIT intervention.

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Most adolescents do not meet physical activity (PA) guidelines. The before-school segment has been identified as one promising opportunity for intervention; however, there is a need for contextual understanding of PA in this segment. This study aimed to examine: a) adolescents' PA levels across various locations before school (6:00am - school start), b) contributions of before-school PA to daily PA and PA guidelines, and c) correlates of location-specific before-school PA.

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Understanding adolescents' physical activity levels and underpinning contextual factors is crucial for health promotion. This cross-sectional study, using 24-hour time use diaries and sociodemographic variables from the , addressed gaps in understanding of physical activity in the before-school segment (the time between waking up and commencing classes). The study examined ) adolescents' time spent in before-school physical activity, focusing on location and shared presence, and ) sociodemographic correlates of before-school physical activity.

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Background: Engagement in before-school physical activity can potentially enhance health and learning-related outcomes for children and adolescents. However, influencing factors and stakeholder perceptions of before-school physical activity remain under-researched. This qualitative study aimed to examine stakeholder perceptions of: a) the suitability of the before-school segment for physical activity, b) barriers and facilitators associated with before-school physical activity, and c) strategies for schools to support before-school physical activity.

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Using the data from , this paper aimed to: 1) investigate the different heart rate (HR) quantification methods reported in school-based high-intensity interval training (HIIT) studies; and 2) assess the criterion validity of session rating of perceived exertion (RPE). During an 8-week HIIT intervention, 213 students (13.1 (0.

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Background: High-intensity interval training (HIIT) interventions are becoming more common in schools. However, limited input has been sought from end-users, which can help design interventions that are more engaging and context appropriate, therefore increasing their potential for successful implementation. One method of engaging end-users is co-design, which involves an active collaboration to design solutions to pre-specified problems.

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Background: Past Physical Activity Report Cards have indicated a minority of Australian children and young people are sufficiently active. The purpose of this paper is to summarise grades across 10 indicators of the 2022 Australian Physical Activity Report Card, to assess physical activity behaviours and supports.

Methods: A development team consisting of research experts synthesised and evaluated national and state level data to inform grades for each indicator.

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Purpose: This study examined dietary behaviors of rural youth at school and at home and sociodemographic differences.

Design: A cross-sectional design was used.

Setting: The study took place in five rural schools in the Southwestern US.

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Physical Education Teacher Education (PETE) training has the potential to influence graduates' decisions as physical educators. Utilizing themes from Rogers' Diffusion of Innovations and Lawson's Occupational Socialization theories, we focused on graduates from a single PETE program which, beginning in 2007, began integrating content, expectations, and experiences relating to an expanded role of the physical educator such as in comprehensive school physical activity programs (CSPAPs). : The purpose of this study was to examine transfer in terms of university training leading to teaching practices in expanded physical activity programming.

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Objective: This study aimed to examine cross-sectional and longitudinal associations between dietary intake and educational outcomes (EO) in Australian first-year university students.

Design: This cross-sectional and longitudinal study measured outcomes of interest at three points over 1 year. Measures included self-reported dietary patterns and dietary intake via a three-day estimated food record.

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Objective: To examine the associations of passive (ie, television) and active (ie, electronic games, computer use) screen time (ST) with perceived school performance of adolescents across gender.

Methods: Data were from the 2014 Health Behaviour in School-aged Children survey conducted across 38 European countries and Canada. Perceived school performance was assessed using an item and dichotomized as high (good/very good) versus the remainder (average/below-average as reference).

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Background: High-intensity interval training (HIIT) is an effective strategy for improving a variety of health outcomes within the school setting. However, there is limited research on the implementation of school-based HIIT interventions and the integration of HIIT within the Health and Physical Education (HPE) curriculum. The aims of the Making a HIIT study are to: 1) describe the methodology and evaluate the feasibility of co-designing HIIT workouts with students and teachers in HPE; 2) determine the effect of co-designed HIIT workouts on cardiorespiratory and muscular fitness, and executive function; 3) understand the effect of co-design on students' motivation, enjoyment, and self-efficacy towards the workouts; and 4) evaluate the implementation of the intervention.

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Purpose: 1) To investigate the effectiveness of school-based high-intensity interval training (HIIT) interventions in promoting health outcomes of children and adolescents compared with either a control group or other exercise modality; and 2) to explore the intervention characteristics and process outcomes of published school-based HIIT interventions.

Methods: We searched Medline, Embase, CINAHL, SPORTDiscus, and Web of Science from inception until 31 March 2021. Studies were eligible if 1) participants aged 5-17 years old; 2) a HIIT intervention within a school setting ≥ 2 weeks duration; 3) a control or comparative exercise group; 4) health-related, cognitive, physical activity, nutrition, or program evaluation outcomes; and 5) original research published in English.

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Background: This study aimed to examine cross-sectional and longitudinal associations between physical activity (PA), sedentary behavior (SB), and educational outcomes (EO) in first-year university students in Australia.

Method: Participants (N = 80) engaged in 3 data collection points (semesters 1, 2, and 3) that included self-reported and device-based PA and SB, and objective EO measures. Cross-sectional associations were examined using linear and binary logistic regressions, and longitudinal associations were examined using generalized estimating equations.

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The development and implementation of school policies is considered a key strategy for the promotion of physical activity (PA) in children and adolescents. This study aimed to systematically review and synthesise existing literature focusing on the associations between formal written school-based PA policies and (a) school PA practices and (b) PA behaviours of school-aged children and adolescents. Fifty-one papers reporting on 52 studies met the eligibility criteria.

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Objective: To review and evaluate the impact of school-based, before-school physical activity (PA) programmes on children's PA levels, health and learning-related outcomes.

Design: Systematic review.

Data Sources: PubMed, PsycINFO, Scopus, Embase and ERIC were searched in January 2021.

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To systematically review available evidence focusing on the relationship between physical activity (PA), sedentary behavior (SB), and educational outcomes (EO), among university students. Articles published in English and up to April 2019 were eligible to be included in the review if they examined associations between either PA or SB measures and EO in undergraduate university students. Thirty-five articles met the eligibility criteria.

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Objective: This study's objective was to identify and assess existing physical activity and nutrition policies for Australian schools.

Methods: Policies were identified through a search of the websites of national and state/territory education departments and school associations, and were subsequently assessed against specific criteria.

Results: Policies were identified for government schools, but only for one non-government school association.

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Purpose: Before-school programs, one of the least studied student-related comprehensive school physical activity program (CSPAP) components, may be a promising strategy to help youth meet the physical activity (PA) guidelines. This study's purpose was to examine: (a) how much PA children accrued during a before-school running/walking club and during the school day, (b) whether children compensated for the PA accumulated in the before-school program by decreasing their school-day PA, and (c) potential sex and body mass index (BMI) differences.

Method: An alternating treatments design with a baseline phase was first conducted at a private school (School A) and was subsequently replicated at a public school (School B).

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Before-school programs provide a good opportunity for children to engage in physical activity (PA) as well as improve their readiness to learn. The purpose of this study was to examine the effect of a before-school running/walking club on elementary school children's on-task behavior. The study employed a two-phase experimental design with an initial baseline phase followed by an alternating treatments phase, and was first conducted at a private school (School A) and subsequently replicated at a public school (School B).

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