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BackgroundMobile technologies for health (mHealth) represent a promising strategy for reducing type 2 diabetes (T2DM) risk. The PROPELS trial investigates whether structured group-based education alone or supplemented with a follow-on support program combining self-monitoring with pedometers and tailored text-messaging is effective in promoting and maintaining physical activity among people at high risk of T2DM. ObjectiveThis paper describes the iterative development of the PROPELS follow-on support program and presents evidence on its acceptability and feasibility. MethodsWe used a modified mHealth development framework with four phases: (1) conceptualization of the follow-on support program using theory and evidence, (2) formative research including focus groups (n=15, ages 39-79 years), (3) pre-testing focus groups using a think aloud protocol (n=20, ages 52-78 years), and (4) piloting (n=11). Analysis was informed by the constant comparative approach, with findings from each phase informing subsequent phases. ResultsThe first three phases informed the structure, nature, and content of the follow-on support program, including the frequency of text messages, the need for tailored content and two-way interaction, the importance of motivational messages based on encouragement and reinforcement of affective benefits (eg, enjoyment) with minimal messages about weight and T2DM risk, and the need for appropriate language. The refined program is personalized and tailored to the individual’s perceived confidence, previous activity levels, and physical activity goals. The pilot phase indicated that the program appeared to fit well with everyday routines and was easy to use by older adults. ConclusionsWe developed a feasible and innovative text messaging and pedometer program based on evidence and behavior change theory and grounded in the experiences, views, and needs of people at high diabetes risk. A large scale trial is testing the effectiveness of this 4-year program over and above structured group education alone. Trial RegistrationInternational Standard Randomized Controlled Trial Number (ISRCTN): 83465245; http://www.controlled-trials.com/ISRCTN83465245/83465245 (Archived by WebCite at http://www.webcitation.org/6dfSmrVAe)

Background: Medication reviews aim to support patients who take medicines, and they are often led by pharmacists. There are different types of medication reviews undertaken in various settings. Previous research undertaken in 2015 found mixed evidence that medication reviews in community settings improve clinical outcomes, but further work needs to be undertaken to establish their impact on patient-orientated and economic outcomes. Aim: This scoping review aims to explore the extent and range of systematic reviews of medication reviews conducted by pharmacists, the nature of the intervention, the evidence for effectiveness, and reported research gaps. Method: Systematic reviews were included irrespective of participants, settings or outcomes and were excluded if pharmacists did not lead the delivery of the included interventions. Data extracted included the design of included studies, population, setting, main results, description of interventions, and future research recommendations. Results: We identified twenty-four systematic reviews that reported that medication review interventions were diverse, and their nature was often poorly described. Two high-quality reviews reported that there was evidence of no effect on mortality; of these one reported an improvement in medicines-related problems (all studies reported an increase of identified problems), and another a reduction in hospital readmissions (Risk ratio 0.93 [95% CI 0.89, 0.98]). Other lower-quality reviews reported evidence supporting intervention effectiveness for some clinical outcomes (odds ratio: achieving diabetes control = 3.11 95% prediction intervals (PI), 1.48–6.52, achieving blood pressure target = 2.73, 95% PI, 1.05–7.083.50). Conclusion: There is mixed evidence of effectiveness for medication reviews across settings and patient populations. There is limited data about the implementation of medication reviews, therefore is difficult to ascertain which components of the intervention lead to improved outcomes. As medication reviews are widely implemented in practice, further research should explore the nature of the interventions, linking the components of these to outcomes. [ABSTRACT FROM AUTHOR]

Objectives: Women in the criminal justice system and women who have been subject to domestic abuse are at high risk of cancer but underrepresented in health promotion research. We aimed to co‐produce, pilot and evaluate a health promoting programme delivered on group walks. Design: A programme co‐produced by women, based on motivational interviewing, created the opportunity for supportive conversations about cancer prevention. Methods: Programme development in two workshops with women with lived experience using authentic vignettes to prompt help‐seeking conversations. A small pilot and a qualitative evaluation was done using framework analysis. Results: The programme appeared acceptable to women and the walk leaders. Women felt included and found it a safe space for sensitive conversations. They appeared empowered and more confident to seek help. Walk leaders expressed confidence in delivering this informal programme, which used prompts rather than delivering didactic training. Conclusion: Cancer prevention for high‐risk groups can be delivered in a personalised and novel way by creating informal opportunities for supportive conversations about cancer prevention. Careful co‐production of the programme of walks with women, using scenarios and quotes that were authentic vignettes, ensured that these came directly from the women's lived experience and enabled women to talk about change. Our findings indicate that this approach was practical, relevant and acceptable to them with some evidence of women feeling empowered to make informed decisions about their health. We recommend that future cancer prevention programmes for underrepresented groups take an asset‐based approach by utilising pre‐existing community organisations to increase reach and sustainability. Patient and Public Involvement: Women with lived experience co‐designed and tested the programme. Provisional findings were fed back to the women and the women's organisation that partnered with this research. [ABSTRACT FROM AUTHOR]

Aim: To identify and analyse ways in which parents are supported to deliver rehabilitation exercises to their child after traumatic brain injury (TBI), conceptualized as strategies. Method: A systematic search was completed using seven online databases and three grey literature databases, from inception to November 2021. The included studies focused on physical rehabilitation in children after TBI with the involvement of parents as hands‐on deliverers or facilitators of rehabilitation (e.g. supervising the exercise). Intervention descriptions were reviewed to identify strategies; this was followed by fine‐grained analysis using the Behaviour Change Wheel to identify intervention components. Risk of bias was analysed using the revised Cochrane Risk‐of‐Bias Tool for Randomized Trials or the Risk Of Bias In Non‐randomized Studies ‐ of Interventions. Results: Six interventions including 211 participants and one trial protocol met the inclusion criteria. All studies included a proportion of children diagnosed with TBI and four studies included mixed samples of acquired brain injury or cerebral palsy. All interventions included elements of goal setting and instruction. Interpretation: Interventions focus heavily on the initiation of physical rehabilitation, but focus less on the longer‐term maintenance of rehabilitation delivery. Further research should integrate perspectives from parents to inform the development of new interventions. What this paper adds: Parents need support to deliver or supervise rehabilitation exercises.The interventions identified in this review supported goal setting, action planning, and learning rehabilitation exercises.Interventions focused primarily on the initiation of exercises but less on maintenance.Rehabilitation is complex and new approaches are needed to better support parents. [ABSTRACT FROM AUTHOR]

Background: The proportion of the population aged 65 years or older is increasing. Typically, physical activity and health decline with age, which is why action to promote active ageing is a major public health priority, particularly due to health inequalities in older adults. The aim of this study is to assess the effectiveness and cost-effectiveness of the Walk with Me peer-led walking intervention for older adults. Methods: This study is a two-arm, assessor-blind, randomised controlled trial. The intervention is a 12-week peer-led walking intervention based on social cognitive theory. Participants in the control group will receive information on active ageing and healthy nutrition. The study will target 348 community-dwelling older adults, aged 60 years or over living in areas of socio-economic disadvantage communities. Trained peer mentors will deliver the intervention. The primary outcome will be a mean between-group change in moderate-to-vigorous physical activity at 12 months from baseline, measured using an Actigraph accelerometer. Secondary outcomes will include quality of life, mental wellbeing, blood pressure, BMI and waist circumference. An embedded process evaluation will involve focus groups and participant diaries. Discussion: Evidence-based, cost-effective interventions to promote physical activity in older adults living in socio-economically disadvantaged communities are needed to address health inequalities. [ABSTRACT FROM AUTHOR]

Theory-based intervention programmes to support health-related behaviour change aim to increase health impact and improve understanding of mechanisms of behaviour change. However, the science of intervention development remains at an early stage. We present a causal modelling approach to developing complex interventions for evaluation in randomized trials. In this approach a generic model links behavioural determinants, causally through behaviour, to physiological and biochemical variables, and health outcomes. It is tailored to context, target population, behaviours and health outcomes. The development of a specific causal model based on theory and evidence is illustrated by the "ProActive" programme, supporting increased physical activity among individuals at risk of Type 2 diabetes. The model provides a rational guide to appropriate measures, intervention points and intervention techniques, and can be tested quantitatively. Causal modelling is critically compared to other approaches to intervention development and evaluation, and research directions are indicated.

Objectives: During COVID‐19 the UK general population has been given strong messages to stay at home. Concurrently unprecedented changes occurred in healthcare access with moves to remote/triage systems. Data have shown that the number of people accessing healthcare services decreased and there are significant concerns that the pandemic has negatively affected help‐seeking for serious conditions, with potentially increased morbidity and mortality. An understanding of help‐seeking is urgently needed to inform public campaigns. We aimed to develop an in‐depth, theory‐based understanding of how, when and why people sought help for potentially serious symptoms (e.g., related to major cardiovascular events or cancer diagnoses) during the pandemic, and what influenced their decisions. Design: Qualitative semi‐structured interviews. Methods: We interviewed 25 adults recruited through a targeted social media campaign. Interviews were conducted via telephone or online platform. Our topic guide was informed by the Model of Pathways to Treatment and the Capability‐Opportunity‐Motivation‐Behaviour model. Results: The analysis identified four main themes: Delay in recognition, Holding on to concerns, Weighing it up and Long‐term impacts. Multiple societal and environmental factors influenced participants' help‐seeking and motivation, capability and opportunity to seek help, with long‐term impacts on well‐being and future help‐seeking. Conclusions: There is a need for clear guidance about pathways to raise concerns about symptoms and gain advice while usual healthcare contacts are paused or stopped. Recommendations for future interventions to support help‐seeking during pandemics include clearer messaging, co‐produced with end‐users, on when, where and how to seek help. [ABSTRACT FROM AUTHOR]

Physical activity is promoted in the asthma population through pulmonary rehabilitation, but limited funding and facilities are available. This review aimed to examine the effectiveness of interventions that promote physical activity and identify the behaviour change techniques (BCTs) and other intervention components used. Five databases were searched, and 25 studies met the inclusion criteria. Interventions had a significant positive effect on physical activity, sedentary behaviour, quality of life and asthma symptoms. BCTs used across intervention and control groups were similar in studies that showed effects and those that did not. Future interventions should employ techniques that help to maintain behaviour change. [ABSTRACT FROM AUTHOR]

The use of multi-agency partnerships, including research-practice partnerships, to facilitate the development, implementation and evaluation of public health interventions has expanded in recent years. However, gaps remain in the understanding of influences on partnership working, and their capacity to facilitate and use evaluation, as well as the characteristics which lead to partnership effectiveness. We applied qualitative methods to explore experiences of stakeholders who were involved in partnerships to deliver and evaluate a national physical activity programme. We combined thematic and network analysis, and drew on concepts of evaluation use, knowledge exchange and organisational systems to interpret our findings and develop a conceptual model of the relationships between partnership characteristics and processes. Our model identifies key partnership characteristics such as high levels of engagement, regular communication and continuity. Furthermore, it highlights the importance of implementing organisational structures and systems to support effective partnership working, knowledge exchange and capacity building. [ABSTRACT FROM AUTHOR]

Aims: Charcot neuroarthropathy (CN) is a complication of neuropathy, in people with diabetes. Treatment requires the prolonged wearing of an offloading device, which can be challenging. The importance of understanding people's perspectives for promoting their engagement in self management is well known. However, no such studies have been done in CN. This qualitative study aimed to understand people's experiences of CN. Methods: Semi‐structured interviews with a purposive sample of 14 participants with CN, recruited from a randomised controlled trial. We gathered opinions, thoughts and the meanings participants attributed to their experiences of CN and its physical, socio‐economic and physiological effects and how this affected their families and relationships. We analysed the interviews using Inductive Thematic Analysis. Results: Four analytic themes were identified: (1) 'Trapped at home isolated and missing social life and daily life routines'; (2) 'Disruption to people's roles, responsibilities, relationships and mobility, which people adapted to try and address and manage'; (3) 'Pain which participants related to the direct or indirect consequences of wearing the cast or boot'; and (4) 'Blame for developing CN, attributed to themselves and healthcare professionals'. Participants described guilt about needing more support, expressing frustration, low mood and low self‐esteem. Conclusion: This study highlights experiential aspects of the previously unrecognised burden of CN. Its physical, social and emotional impacts on participants and their families are substantial and sustained. There is a need to raise clinical awareness of CN and its wider effects. Trial registration: ISRCTN74101606. Registered on 6 November 2017, http://www.isrctn.com/ISRCTN74101606?q=CADom&filters=&sort=&offset=1&totalResults=1&page=1&pageSize=10&searchType=basic‐search [ABSTRACT FROM AUTHOR]

This study aimed to explore how social distancing and self-isolation measures, aimed at protecting vulnerable groups from COVID-19, affected the wellbeing and physical activity levels among adults diagnosed with asthma. Twenty-seven participants took part across four online focus groups. Transcripts were analysed using thematic analysis. Participants reported becoming more health conscious due to being labelled as vulnerable. Their relationship with the severity of their asthma was altered and they reported making positive changes to increase their physical activity levels. Findings suggest there is a window of opportunity to engage with people diagnosed with asthma to promote beneficial lifestyle changes and self-management. [ABSTRACT FROM AUTHOR]

Standard theory of planned behavior (TPB) questions to elicit salient behavioral beliefs may elicit instrumental consequences of behavior, and overlook affective consequences. Two hundred thirteen English adults (35 to 75 years of age) completed a questionnaire that contained closed measures of TPB constructs, and open-ended questions that asked not only about advantages and disadvantages, but also what respondents would like or enjoy and dislike or hate about being more physically active. Beliefs elicited by affective questions were associated more strongly with a closed affective attitude scale. Beliefs elicited by instrumental questions were associated more strongly with a closed instrumental attitude scale. Closed measures of the standard TPB variables explained 48% of the variance in intention to increase physical activity, while affective attitude explained an additional 11% of the variance. Applications of the TPB should consider affective and not just instrumental determinants of behavior.

Objectives Design Methods Results Conclusions Behaviour change theories have extensively been used in health behaviour change interventions and their programme theories. However, they are rarely evaluated in randomized field studies. The Let's Move It intervention targeted various psychosocial constructs to increase adolescents' physical activity. A theory‐based process evaluation aiming to illuminate the trial findings as well as to test the programme theory used is conducted. Specifically, we investigate whether the intervention influenced the theorized determinants of change immediately post‐intervention and after 1 year, and whether these determinants were associated with changes in physical activity.A cluster‐randomized controlled trial (n = 1166).We measured theorized determinants with self‐report, and physical activity (PA) with accelerometry and self‐report. The effects are evaluated with repeated measures ANOVA and regression models.No changes were detected in most theorized determinants but intervention arm reported higher enactment of behaviour change techniques used during intervention immediately post‐intervention and lower descriptive norms for PA throughout. Autonomous motivation was associated with PA immediately post‐intervention.The lack of intervention effects may be due to many factors, for example insensitive measures, ceiling effects. However, reporting these null effects advances understanding of behaviour change processes. We introduce methodologic possibilities for future intervention programme theory evaluation efforts. [ABSTRACT FROM AUTHOR]

Abstract Background Failure to take medication reduces the effectiveness of treatment leading to increased morbidity and mortality. We evaluated the efficacy of a consultation-based intervention to support objectively-assessed adherence to oral glucose lowering medication (OGLM) compared to usual care among people with type 2 diabetes. Methods This was a parallel group randomised trial in adult patients with type 2 diabetes and HbA1c≥7.5% (58 mmol/mol), prescribed at least one OGLM. Participants were allocated to a clinic nurse delivered, innovative consultation-based intervention to strengthen patient motivation to take OGLM regularly and support medicine taking through action-plans, or to usual care. The primary outcome was the percentage of days on which the prescribed dose of medication was taken, measured objectively over 12 weeks with an electronic medication-monitoring device (TrackCap, Aardex, Switzerland). The primary analysis was intention-to-treat. Results 211 patients were randomised between July 1, 2006 and November 30, 2008 in 13 British general practices (primary care clinics). Primary outcome data were available for 194 participants (91.9%). Mean (sd) percentage of adherent days was 77.4% (26.3) in the intervention group and 69.0% (30.8) in standard care (mean difference between groups 8.4%, 95% confidence interval 0.2% to 16.7%, p = 0.044). There was no significant adverse impact on functional status or treatment satisfaction. Conclusions This well-specified, theory based intervention delivered in a single session of 30 min in primary care increased objectively measured medication adherence, with no adverse effect on treatment satisfaction. These findings justify a definitive trial of this approach to improving medication adherence over a longer period of time, with clinical and cost-effectiveness outcomes to inform clinical practice. Trial registration Current Controlled Trials ISRCTN30522359

Abstract Background There is increasing recognition that public health strategies to prevent childhood obesity need to start early in life. Any behavioural interventions need to target maternal attitudes and infant feeding practices, This paper describes the development and preliminary validation of a questionnaire to assess maternal attitudes towards infant growth and milk feeding practices. Methods We designed a 57-item (19 questions), self-administered questionnaire to measure the following four domains- 1) type of milk feeding, decision making and sources of advice; 2) frequency and quantity of milk feeds; 3) attitudes to infant feeding and growth; and 4) theory-based beliefs about following infant feeding recommendations. Forty mothers completed the questionnaire on two occasions six days apart (to assess test-retest reliability) and then participated in a semi-structured, open-ended telephone interview covering the same domains (to assess criterion validity). Percentage agreement, Cohen's Kappas (for categorical variables) and Spearman's correlation coefficients (for continuous variables) were used to quantify reliability and validity. Internal consistency between theory-based constructs (self-efficacy, outcome expectancy and intention) was quantified by Chronbach's alpha. Results Of the 57 questionnaire items 51 (89%) had percentage agreement above 70% indicating good test-retest reliability, and the remaining 6 items had moderate or substantial levels of agreement (kappa 0.41-0.68). Comparing questionnaire with interview coding (validity), percentage agreement was above 66% for 39/57 items (68%). Of the 16 items with percentage agreement below 66%, only five had kappa values below 0.20 (two items had insufficient interview responses). Internal consistency was 0.51, 0.79 and 0.90 for self-efficacy, outcome expectancy and intention respectively. Conclusions This questionnaire could be a useful tool in understanding the determinants of infant feeding and the 'causal mechanism' of interventions that target infant feeding practices to prevent early obesity.

Abstract Background The increasing prevalence of type 2 diabetes poses both clinical and public health challenges. Cost-effective approaches to prevent progression of the disease in primary care are needed. Evidence suggests that intensive multifactorial interventions including medication and behaviour change can significantly reduce cardiovascular morbidity and mortality among patients with established type 2 diabetes, and that patient education in self-management can improve short-term outcomes. However, existing studies cannot isolate the effects of behavioural interventions promoting self-care from other aspects of intensive primary care management. The ADDITION-Plus trial was designed to address these issues among recently diagnosed patients in primary care over one year. Methods/Design ADDITION-Plus is an explanatory randomised controlled trial of a facilitator-led, theory-based behaviour change intervention tailored to individuals with recently diagnosed type 2 diabetes. 34 practices in the East Anglia region participated. 478 patients with diabetes were individually randomised to receive (i) intensive treatment alone (n = 239), or (ii) intensive treatment plus the facilitator-led individual behaviour change intervention (n = 239). Facilitators taught patients key skills to facilitate change and maintenance of key behaviours (physical activity, dietary change, medication adherence and smoking), including goal setting, action planning, self-monitoring and building habits. The intervention was delivered over one year at the participant's surgery and included a one-hour introductory meeting followed by six 30-minute meetings and four brief telephone calls. Primary endpoints are physical activity energy expenditure (assessed by individually calibrated heart rate monitoring and movement sensing), change in objectively measured dietary intake (plasma vitamin C), medication adherence (plasma drug levels), and smoking status (plasma cotinine levels) at one year. We will undertake an intention-to-treat analysis of the effect of the intervention on these measures, an assessment of cost-effectiveness, and analyse predictors of behaviour change in the cohort. Discussion The ADDITION-Plus trial will establish the medium-term effectiveness and cost-effectiveness of adding an externally facilitated intervention tailored to support change in multiple behaviours among intensively-treated individuals with recently diagnosed type 2 diabetes in primary care. Results will inform policy recommendations concerning the management of patients early in the course of diabetes. Findings will also improve understanding of the factors influencing change in multiple behaviours, and their association with health outcomes. Trial registration ISRCTN: ISRCTN99175498

Abstract Background The importance of behaviour change in improving health is illustrated by the increasing investment by funding bodies in the development and evaluation of complex interventions to change population, patient, and practitioner behaviours. The development of effective interventions is hampered by the absence of a nomenclature to specify and report their content. This limits the possibility of replicating effective interventions, synthesising evidence, and understanding the causal mechanisms underlying behaviour change. In contrast, biomedical interventions are precisely specified (e.g., the pharmacological 'ingredients' of prescribed drugs, their dose and frequency of administration). For most complex interventions, the precise 'ingredients' are unknown; descriptions (e.g., 'behavioural counseling') can mean different things to different researchers or implementers. The lack of a method for specifying complex interventions undermines the precision of evidence syntheses of effectiveness, posing a problem for secondary, as well as primary, research. We aim to develop a reliable method of specifying intervention components ('techniques') aimed at changing behaviour. Methods/Design The research will be conducted in three phases. The first phase will develop the nomenclature. We will refine a preliminary list of techniques and definitions. Using a formal consensus method, experts will then define the key attributes of each technique and how it relates to, and differs from, others. They will evaluate the techniques and their definitions until they achieve an agreed-upon list of clearly defined, nonredundant techniques. The second phase will test the nomenclature. Trained experts (primary researchers and systematic reviewers), equipped with a coding manual and guidance, will use the nomenclature to code published descriptions of complex interventions. Reliability between experts, over time, and across types of users will be assessed. We will assess whether using the nomenclature to write intervention descriptions enhances the clarity and replicability of interventions. The third phase will develop a web-based users' resource of clearly specified and nonredundant techniques, which will aid the scientific understanding of, and development of, effective complex interventions. Dissemination throughout the project will be through stakeholder meetings, targeted multidisciplinary workshops, conference presentation, journal publication, and publication in an interactive web-based platform (a Wiki). Discussion The development of a reliable method of specifying intervention components aimed at changing behaviour will strengthen the scientific basis for developing, evaluating, and reporting complex interventions. It will improve the precision of evidence syntheses of effectiveness, thus enhancing secondary, as well as primary, research.

Abstract Background To develop more efficient programmes for promoting dietary and/or physical activity change (in order to prevent type 2 diabetes) it is critical to ensure that the intervention components and characteristics most strongly associated with effectiveness are included. The aim of this systematic review of reviews was to identify intervention components that are associated with increased change in diet and/or physical activity in individuals at risk of type 2 diabetes. Methods MEDLINE, EMBASE, CINAHL, PsycInfo, and the Cochrane Library were searched for systematic reviews of interventions targeting diet and/or physical activity in adults at risk of developing type 2 diabetes from 1998 to 2008. Two reviewers independently selected reviews and rated methodological quality. Individual analyses from reviews relating effectiveness to intervention components were extracted, graded for evidence quality and summarised. Results Of 3856 identified articles, 30 met the inclusion criteria and 129 analyses related intervention components to effectiveness. These included causal analyses (based on randomisation of participants to different intervention conditions) and associative analyses (e.g. meta-regression). Overall, interventions produced clinically meaningful weight loss (3-5 kg at 12 months; 2-3 kg at 36 months) and increased physical activity (30-60 mins/week of moderate activity at 12-18 months). Based on causal analyses, intervention effectiveness was increased by engaging social support, targeting both diet and physical activity, and using well-defined/established behaviour change techniques. Increased effectiveness was also associated with increased contact frequency and using a specific cluster of "self-regulatory" behaviour change techniques (e.g. goal-setting, self-monitoring). No clear relationships were found between effectiveness and intervention setting, delivery mode, study population or delivery provider. Evidence on long-term effectiveness suggested the need for greater consideration of behaviour maintenance strategies. Conclusions This comprehensive review of reviews identifies specific components which are associated with increased effectiveness in interventions to promote change in diet and/or physical activity. To maximise the efficiency of programmes for diabetes prevention, practitioners and commissioning organisations should consider including these components.

Abstract Background Poor recognition of physical inactivity may be an important barrier to healthy behaviour change, but little is known about this phenomenon. We aimed to characterize a high-risk population according to the discrepancies between objective and self-rated physical activity (PA), defined as awareness. Methods An exploratory cross-sectional analysis of PA awareness using baseline data collected from 365 ProActive participants between 2001 and 2003 in East Anglia, England. Self-rated PA was defined as 'active' or 'inactive' (assessed via questionnaire). Objective PA was defined according to achievement of guideline activity levels (≥30 minutes or Results 63.3% of participants (N = 231) were inactive according to objective measurement. Of these, 45.9% rated themselves as active ('Overestimators'). In a multiple logistic regression model adjusted for age and smoking, males (OR = 2.11, 95% CI = 1.12, 3.98), those with lower BMI (OR = 0.89, 95% CI = 0.84, 0.95), younger age at completion of full-time education (OR = 0.83, 95% CI = 0.74, 0.93) and higher general health perception (OR = 1.02 CI = 1.00, 1.04) were more likely to overestimate their PA. Conclusions Overestimation of PA is associated with favourable indicators of relative slimness and general health. Feedback about PA levels could help reverse misperceptions.