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Despite rapid theoretical expansion in conceptualising individual and environmental processes, the examination of social processes associated with health behaviours has a less cohesive theoretical landscape. The purpose of this mapping review and content analysis was to develop a taxonomy of social dimensions applicable to health behaviours. Michie et al . (2014) 'ABC of Theories of Behaviour Change' text, which includes 83 behaviour change theories, was used as the data-set, whereby an iterative concurrent content analysis was undertaken with respect to all relational/interpersonal psychological dimensions. The analysis resulted in a social dimensions of health behaviour (SDHB) framework of 10 dimensions, including seven sub-types of social appraisal dimensions and three-sub-types of social identification dimensions. The SDHB revealed that specific dimensions, such as descriptive norm, are prevalent in behavioural theories, while other dimensions have seen less attention. Further, while most social constructs in behavioural theories are represented by only one social dimension in the SDHB, other constructs have complex representation. This version 1.0 of the SDHB framework should assist in specifying the core social dimensions in health behaviour, provide a common lexicon to discuss relational constructs in psychological theories, amalgamate the disparate social constructs literature and identify opportunities for further research to advance theory development and interventions.

Although extensive research suggests that behavior change interventions can improve physical activity (PA) over the course of an intervention, the maintenance of these improvements beyond intervention termination is less clear. The purpose of this study was to determine, through meta-analysis, whether behavior change interventions produce sustained improvements in PA after interventions conclude. Studies were retrieved from a recent (2019) meta-analysis of 224 interventions. Studies that measured PA at baseline, post-intervention, and a follow-up timepoint were included in this updated review. We examined the effects of these interventions in terms of changes in PA from baseline to post-intervention, baseline to follow-up, and post-intervention to follow-up (relative to control groups). We also examined whether the inclusion of theory and behavior change techniques (BCTs) within interventions as well as the length of time between PA assessments moderated these effects. Thirty-nine interventions (17% of interventions from the previous review) from 31 studies were included in the meta-analysis. Significant improvements in PA were found from baseline to follow-up ( d  = 0.32). In general, these effects resulted from significant increases in PA from baseline to post-intervention ( d  = 0.46), followed by significant decreases from post-intervention to follow-up ( d = -0.18). Effect sizes did not vary between theory-based and no-stated-theory interventions. The positive effects from baseline to post-intervention and negative effects from post-intervention to follow-up were more pronounced as the length of time between assessments increased. In conclusion, behavior change interventions improve PA over the course of the intervention; however, these improvements are generally not sustained after the intervention concludes.

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. Participants represented a subgroup (n = 483, Mage = 71.41 years) from the larger trial (n = 627) who completed measures of the trial's putative psychological mediators (i.e., group cohesion and affective attitudes) over the course of the 24-week exercise programs., Results: Piecewise latent growth modeling revealed different trajectories between participants in the two intervention conditions (SASG, SAMG) when compared with the comparison MAMG condition with regard to perceptions of group cohesion and affective attitudes. Results of subsequent cross-lagged panel modeling revealed that better program adherence in the two intervention conditions, when compared with the referent MAMG condition, was mediated by perceptions of group cohesion., Conclusions: The findings provide insight into how the two intervention programs differentially strengthened perceptions of group cohesion and affective attitudes over time. Consistent with self-categorization theory, the results also shed light on the role of group cohesion, in particular, as a psychological mechanism of action to promote older adults' exercise adherence behaviors. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Background: Although avoiding sedentary behavior has many health benefits, adults often sit for long periods at work. The purpose of this study was to compare affective attitude, instrumental attitude, and self-regulation messaging interventions on sitting in the workplace., Methods: Using a cluster randomised controlled trial design, participants (N = 116) were assigned (by workplace) to: (a) instrumental, (b) affective, (c) self-regulation, or (d) control (nutrition information) groups. Measurements were taken online at baseline, 4 weeks, 8 weeks, and 12 weeks post-baseline. The interventions comprised three presentations delivered following baseline, week 4, and week 8 assessments. The primary outcome was self-reported average hours of sitting per day at work (registered trial number: NCT04082624)., Results: Controlling for baseline sitting, overall, the affective group sat for less time than the instrumental and self-regulation groups. Also, at week 4, the affective group sat for less time than the instrumental and self-regulation groups and, at week 8, the affective group sat for less time than the self-regulation and control groups. There were no differences between the groups at week 12., Conclusions: This investigation showed that workplace interventions targeting affective attitude can lead to less sitting time in the short term. Future research should explore additional strategies to minimise sedentary behavior in the long term., (© 2020 International Association of Applied Psychology.)

Standard measures of self-efficacy (SE) may confound perceived capability and motivation because respondents interpret the word "can" as "will". Objective: To test whether priming for the meaning of the word "can" changes self-efficacy ratings. Design: In an experimental test, 134 university students responded to an on-line standardized measure of exercise SE and provided definitions of the words "can" and "will". One month later participants were randomized to complete (a) the same questionnaire (control), (b) the same questionnaire but with presentation of each participant's definition of "can" prior to the SE measure (definition priming), or (c) the same questionnaire but with SE items ("I can exercise…") placed side-by-side with behavioral intention items ("I will exercise…") (side-by-side priming). Results: SE increased relative to controls for side-by-side (b = 12.08, SE  = 2.70, p <.01) but not definition priming (ns), with the former even stronger among participants ( n  = 91) who provided strict (i.e., literal) rather than liberal definitions of "can" (b = 15.38, SE  = 3.21, p <.001). Conclusion: Priming of the meaning of the word "can" led to increases in self-efficacy ratings among those who hold a literal meaning of the word "can". This suggests that for many respondents standard assessments of SE may be confounded by motivation.

Objective: This study examined the effects of consistency tendency on the predictive power of the theory of planned behavior (TPB) in relation to physical activity behavior. Methods: In this randomized controlled cross-over trial, we recruited 770 undergraduate students from Indonesia who were randomly assigned into two groups. Participants completed physical activity versions of TPB measures at T1 (baseline) and T2 (post 1 week), and the International Physical Activity Questionnaire at T3 (post 1 month). At T1 and T2, the TPB questions were either presented in ensemble-order (i.e., consistency tendency supressed) or alternate-order (i.e., consistency tendency facilitated). Results: The parameter estimates of the model (CFI > .92, TLI > .90, SRMR < .08, RMSEA < .08) aligned with the tenets of TPB. As compared to ensemble-order, a TPB measured in alternate-order yielded stronger cross-sectional relationships, but this pattern did not appear in the prospective relationships in TPB (i.e., intention/perceived behavioral control and behavior). Conclusions: Consistency tendency inflated the factor correlations of cross-sectionally measured TPB variables, but the inflation was not observed in the prospective prediction of behavior. Health psychology questionnaires with items presented in ensemble order may represent a viable means of reducing the confounding effect of consistency tendency.

Purpose: The aim of this study was to explore the effect of the Active Teen Leaders Avoiding Screen-time (ATLAS) intervention on psychological well-being in adolescent boys and to examine the potential mediating mechanisms that might explain this effect., Methods: ATLAS was evaluated using a cluster randomized controlled trial in 14 secondary schools located in low-income communities (N = 361 adolescent boys, mean age = 12.7 ± .5 years). The 20-week intervention was guided by self-determination theory and involved: professional development for teachers, provision of fitness equipment to schools, enhanced school sport sessions, researcher-led seminars, a smartphone application, and parental strategies for reducing screen time. Assessments were conducted at baseline and immediately post intervention (8 months). Psychological well-being was measured using the Flourishing Scale. Motivational regulations (intrinsic, identified, introjected, controlled, and amotivation) and basic psychological needs (autonomy, competence, and relatedness) in school sport, muscular fitness, resistance training skill competency, and recreational screen time were examined as potential mediating mechanisms of the intervention effect., Results: The intervention effect on well-being was small but statistically significant. Within a multiple mediator model, changes in autonomy needs satisfaction, recreational screen time, and muscular fitness significantly mediated the effect of the intervention on psychological well-being., Conclusions: In addition to the physical health benefits, targeted physical activity programs for adolescent boys may have utility for mental health promotion through the mechanisms of increasing autonomy support and muscular fitness and reducing screen time., (Copyright © 2016 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.)

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. Included studies consisted of controlled experimental trials wherein participants in the intervention conditions set PA goals and their PA behaviour was compared to participants in a control group who did not set goals. A meta-analysis was ultimately carried out across 45 articles (comprising 52 interventions, 126 effect sizes, n = 5912) that met eligibility criteria using a random-effects model. Overall, a medium, positive effect (Cohen's d(SE) = .552(.06), 95% CI = .43-.67, Z = 9.03, p < .001) of goal setting interventions in relation to PA behaviour was found. Moderator analyses across 20 variables revealed several noteworthy results with regard to features of the study, sample characteristics, PA goal content, and additional goal-related behaviour change techniques. In conclusion, multi-component goal setting interventions represent an effective method of fostering PA across a diverse range of populations and settings. Implications for effective goal setting interventions are discussed.

Background: Physical activity has health benefits across the lifespan, yet only 13 % of Canadian older adults are sufficiently active. Results from a number of observational studies indicate that adults display positive preferences for exercising with others of a similar age and same gender, and that intra-group age- and gender-similarity are associated with elevated exercise adherence. However, research has yet to experimentally examine the extent to which intra-group age- and gender-related similarity affect exercise adherence behaviors., Methods/design: The GrOup-based physical Activity for oLder adults (GOAL) trial is a three-arm randomized control trial that will examine the efficacy of two different group-based exercise programs for older adults (informed by the tenets of self-categorization theory) in relation to a standard group-based exercise program. Within this manuscript we outline the design and proposed evaluation of the GOAL trial. The first arm is comprised of exercise groups made up of participants of a similar-age and of the same gender; the second arm consists of groups with similar-aged mixed gender participants; the control arm is comprised of mixed-aged mixed gender participants. We aim to compare the adherence rates of participants across conditions, as well as potential moderation effects and mediating mechanisms., Discussion: Results from this trial will inform intervention designs to improve the exercise adherence behaviors of older adult. At a systems-level, should support be derived for the efficacy of the interventions tested in this trial, changing group composition (i.e., age, gender) represents a feasible program adaptation for physical activity centers., Trial Registration: ClinicalTrials.gov # NCT02023632 . Registered December 13, 2013.

Objective: To explore the experience of being in the Go Girls! program from the perspective of its participants., Methods: Drawing from a social constructivist approach, this study consisted of semi-structured interviews conducted with 12 purposively sampled Go Girls! participants., Results: The results provided evidence for the emergence of 2 higher-order themes that subsume 7 lower-order themes and 27 categories that relate to the general components of the program and program outcomes associated with participating in the program., Conclusions: Participants in the Go Girls! program reported enjoying the program, experiencing changes in important health-enhancing cognitions and behaviors and developing meaningful relationships with program mentors and other program participants.

The purpose of this study was to examine the extent to which transformational teaching, exhibited by secondary school physical education teachers, predicts within-class physical activity and leisure-time physical activity among adolescents. The study used a prospective observational design and involved data collected from 874 Grade 10 adolescents (M age = 15.41, (SD) = .61). Through use of structural equation modeling, the results revealed that adolescents' perceptions of transformational teaching were positively related to within-class physical activity and leisure-time physical activity, and these effects were mediated by adolescents' estimation of their teacher's confidence in their abilities (i.e. relation-inferred self-efficacy) and self-efficacy beliefs., (© The Author(s) 2013.)

The objective of the studies presented in this paper was to examine whether the need to belong can be used to enhance exercise cognitions and behavior. Two studies examined the effectiveness of framing exercise as a means of boosting social skills (versus health benefits) for self-regulatory efficacy, exercise intentions, and (in Study 2) exercise behavior. In Study 1, inactive adults primed to feel a lack of social belonging revealed that this manipulation led to greater self-regulatory efficacy (but not exercise intentions). In Study 2, involving a sample of inactive lonely adults, all participants reported engaging in more exercise; however, those in the social skills condition also reported a greater sense of belonging than those in the health benefits comparison condition. These findings provide an important basis for developing physical activity interventions that might be particularly relevant for people at risk for feeling socially isolated or lonely.

Background: Understanding the contextual preferences that people have for engaging in a health-enhancing physical activity has been identified as particularly important, as these preferences have been implicated in the maintenance of active lifestyle behaviors., Purpose: The primary purpose of this study was to examine adults' preferences for exercising in both gender-segregated and gender-integrated physical activity groups. The secondary purpose was to examine whether overweight status moderates adults' preferences for gender-segregated groups relative to gender-integrated groups., Method: Survey data were obtained from a representative sample of 772 adults (N (males) = 407; N (females) = 365) in a large city in the United Kingdom., Results: Males and females reported a stronger preference for exercising with members of their own gender relative to exercising in gender-integrated groups. In addition, overweight participants were found to report an accentuated relative preference for gender-segregated groups when compared to normal weight respondents., Conclusion: These findings suggest that both within-group gender composition and overweight status should be considered as salient contextual factors when attempting to implement successful group-based exercise programs.