Temporal relationships in the movement behaviour of adolescents: Testing and methodological considerations of the ActivityStat hypothesis.

The study aimed to investigate the ActivityStat hypothesis by examining the presence and the timeframe of the temporal relationships among physical activity (PA) levels and stationary time (ST) in adolescents. A secondary analysis was performed on data involving 356 adolescents in Dunedin, New Zealand. Participants wore a waist-worn accelerometer for several consecutive days to assess PA levels [i.

Effects of older adults' social identification on psychological flourishing and exercise program adherence.

Background: With the onset of the COVID-19 pandemic, many exercise programs moved online. The purpose of this study was to examine the extent to which older adults' social identification with other exercise program members contributed to their psychological flourishing and exercise program adherence.

Methods: The study represented a secondary analysis of data derived from the Seniors COVID-19 Pandemic and Exercise (SCOPE) Trial, in which older adults were randomized to a waitlist control condition or one of two online (personal v group) exercise programs.

Development of a ParticipACTION App-Based Intervention for Improving Postsecondary Students' 24-Hour Movement Guideline Behaviors: Protocol for the Application of Intervention Mapping.

Background: The Canadian 24-Hour Movement Guidelines for adults provide specific recommendations for levels of physical activity, sedentary behavior, and sleep (ie, the movement behaviors) required for optimal health. Performance of the movement behaviors is associated with improved mental well-being. However, most postsecondary students do not meet the movement behavior recommendations within the Canadian 24-Hour Movement Guidelines and experience increased stress and declining well-being, suggesting the need for an intervention targeting students' movement behaviors.

Continuous-Time Modeling of the Bidirectional Relationship Between Incidental Affect and Physical Activity.

Background: Previous research suggests that there is a bidirectional relationship between incidental affect (i.e., how people feel in day-to-day life) and physical activity behavior.

Move more, move better: A narrative review of wearable technologies and their application to precision health.

Recent technological and methodological advances have seen a rapid increase in the development and use of wearable technologies, advancing the study and practice of precision health for individuals across real-world contexts and health statuses. This narrative review highlights the recent scientific advances and emerging challenges of wearable technologies. We first review the advantages of monitoring physical activity using wearable technologies over self-reports and examine commercially available devices' reliability and validity.

Analysis of dynamic psychological processes to understand and promote physical activity behaviour using intensive longitudinal methods: a primer.

Physical activity behaviour displays temporal variability, and is influenced by a range of dynamic psychological processes (e.g., affect) and shaped by various co-occurring events (e.

Online-Delivered Group and Personal Exercise Programs to Support Low Active Older Adults' Mental Health During the COVID-19 Pandemic: Randomized Controlled Trial.

Background: In response to the COVID-19 pandemic, experts in mental health science emphasized the importance of developing and evaluating approaches to support and maintain the mental health of older adults.

Objective: The aim of this study was to assess whether a group-based exercise program relative to a personal exercise program (both delivered online) and waitlist control (WLC) can improve the psychological health of previously low active older adults during the early stages of the COVID-19 pandemic.

Methods: The Seniors COVID-19 Pandemic and Exercise (SCOPE) trial was a 3-arm, parallel randomized controlled trial conducted between May and September 2020 in which low active older adults (aged ≥65 years) were recruited via media outlets and social media.

Psychological mediators of exercise adherence among older adults in a group-based randomized trial.

Objective: To examine the psychological mediators of exercise adherence among older adults in a group-based physical activity randomized controlled trial.

Method: Older adults (≥65 years) were randomized to one of three conditions as part of the "GrOup-based physical Activity for oLder adults" (GOAL) randomized controlled trial. These included similar age same gender (SASG) and similar age mixed gender (SAMG) exercise programs that were informed by the tenets of self-categorization theory, and a "standard" mixed age mixed gender (MAMG) exercise program.

Effects of Group-Based Exercise on Flourishing and Stigma Consciousness among Older Adults: Findings from a Randomised Controlled Trial.

Background: To examine the extent to which group-based exercise programs, informed by self-categorisation theory, result in improvements in psychological flourishing and reductions in age- and gender-related stigma consciousness among older adults.

Methods: In the study, older adults (N = 485, ≥ 65 years) were randomised to similar age same gender (SASG), similar age mixed gender (SAMG), or "standard" mixed age mixed gender (MAMG) group-based exercise programs. Flourishing and stigma consciousness were assessed on six occasions during the 24-week intervention and represented secondary trial outcomes.

'Active'ating thoughts about affect: elicitation of physical activity judgements in insufficiently active women.

Objective: A growing body of evidence suggests that affective judgements are distinct from, and exert greater influence on, physical activity behaviours than instrumental judgements.

Design: As part of a randomised controlled trial, 110 insufficiently active, female, university students were randomised to (a) an affective mental contrasting condition, (b) an instrumental mental contrasting condition, or (c) a 'standard' mental contrasting intervention (with no modifications). In the analyses concerning the trial's primary outcome, the affective mental contrasting condition was found to be more effective for increasing physical activity than the standard or instrumental conditions.

Group-based physical activity for older adults (GOAL) randomized controlled trial: Exercise adherence outcomes.

Background: Despite the health benefits of regular physical activity, across the globe older adults represent the least active section of society.

Purpose: The GrOup-based physical Activity for oLder adults (GOAL) trial was a three-arm parallel randomized controlled trial (RCT) that was designed to test the efficacy of two group-based exercise programs for older adults, informed by self-categorization theory (SCT), in comparison to a standard group-based exercise program.

Methods: RCT conducted in Greater Vancouver, Canada, enrolled 627 older adults (Mage = 71.

Affective mental contrasting to enhance physical activity: A randomized controlled trial.

Objective: Transition to university is a vulnerable period for discontinuing regular physical activity that can have implications for students' physical and psychological health. Accordingly, it is imperative to find and implement cost and time-effective interventions to mitigate the consequences of this transition. Intervention research has shown mental contrasting is an effective means of promoting various health-enhancing behaviors including physical activity.

The Effectiveness of Teamwork Training on Teamwork Behaviors and Team Performance: A Systematic Review and Meta-Analysis of Controlled Interventions.

The objective of this study was to conduct a systematic review and meta-analysis of teamwork interventions that were carried out with the purpose of improving teamwork and team performance, using controlled experimental designs. A literature search returned 16,849 unique articles. The meta-analysis was ultimately conducted on 51 articles, comprising 72 (k) unique interventions, 194 effect sizes, and 8439 participants, using a random effects model.

Effects of Variety Support on Exercise-Related Well-Being.

Background: The purpose of this study was to experimentally examine the extent to which variety support in a resistance exercise program influences exercise-related well-being among inactive adults.

Methods: A sample of 121 inactive university students were randomly assigned and participated in either a high or low variety support 6-week exercise program. Measures of exercise-related perceived variety, positive affect, negative affect, and subjective vitality were completed at baseline, after 3 weeks, and after 6 weeks (i.

Peer mentoring of adults with spinal cord injury: a transformational leadership perspective.

Purpose: Drawing from the tenets of transformational leadership theory, the purpose of this study was to examine the nature of effective peer mentoring of adults with a spinal cord injury (SCI) from the perspective of mentees.

Methods: The study utilised a qualitative methodology (informed by a social constructionist approach), involving 15 adult mentees with a SCI (mean age = 47.2; mean time since injury = 14.

Variety support and exercise adherence behavior: experimental and mediating effects.

The purpose of this study was to examine the extent to which the provision of variety (i.e., variety support) is related to exercise behavior among physically inactive adults and the extent to which the 'experience of variety' mediates those effects.

The effectiveness of multi-component goal setting interventions for changing physical activity behaviour: a systematic review and meta-analysis.

Drawing from goal setting theory (Latham & Locke, 1991; Locke & Latham, 2002; Locke et al., 1981), the purpose of this study was to conduct a systematic review and meta-analysis of multi-component goal setting interventions for changing physical activity (PA) behaviour. A literature search returned 41,038 potential articles.

Understanding for whom, under what conditions, and how group-based physical activity interventions are successful: a realist review.

Background: Participation in group-based physical activity (GBPA) interventions has been found to result in higher levels of exercise adherence and program compliance. However, previous reviews of GBPA programs have provided limited insight regarding 'for whom', 'under what conditions', and 'how' these interventions increase physical activity behavior.

Methods: A realist review was conducted by following the seven recommended iterative and overlapping steps (J Health Serv Res Policy 10S1:21-34, 2005).