Colin James Greaves

Colin James Greaves
University of Birmingham · School of Sport Exercise and Rehabilitation

PhD C Psychol

About

189
Publications
46,478
Reads
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6,095
Citations
Introduction
Colin Greaves is a Chartered Health Psychologist and Professor of Psychology Applied to Health at University of Birmingham. He develops and evaluates interventions to support health behaviour change. He has helped to develop interventions and training courses for NHS service providers to support people to increase physical activity, lose weight, stop smoking and to improve self-care of chronic illnesses. He has contributed to NICE guidance and European guidelines on the prevention of type 2 diabetes. Current research includes funded evaluations of interventions for diabetes prevention (NDPS, ComPoD), self-management of Heart Failure ((REACH-HF), weight loss (SkiM, Waste the Waist), physical activity (BAcPAc, eCOACHER, REACT), smoking cessation (EARS, TARS) and depression (eMotion).
Additional affiliations
November 2002 - July 2012
University of Exeter
Position
  • Senior Researcher

Publications

Publications (189)
Article
Full-text available
Around 10-15% of adults aged over 40 years have pre-diabetes, which carries a high risk of progression to type 2 diabetes. Intensive lifestyle intervention reduces progression by as much as 58%. However, the cost and personnel requirements of these interventions are major obstacles to delivery in NHS primary care. To assess the effectiveness of a l...
Article
Full-text available
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...
Article
Full-text available
Behaviour change interventions can be effective in helping people to lose weight, but weight is often regained. Effective interventions are required to prevent this. We conducted a systematic review and synthesis of qualitative research on people’s experiences of weight loss maintenance. We searched bibliographic databases for qualitative studies a...
Article
Full-text available
Group-based interventions are widely used to promote health-related behaviour change. While processes operating in groups have been extensively described, it remains unclear how behaviour change is generated in group-based health-related behaviour-change interventions. Understanding how such interventions facilitate change is important to guide int...
Article
Full-text available
Background: Cardiac rehabilitation improves health-related quality of life (HRQoL) and reduces hospitalizations in patients with heart failure, but international uptake of cardiac rehabilitation for heart failure remains low. Design and methods: The aim of this multicentre randomized trial was to compare the REACH-HF (Rehabilitation EnAblement i...
Article
Full-text available
Background Physical activity (PA) programmes targeting older adults often report relatively low attendance rates which limits impact. Research into barriers and enablers of PA adherence is often qualitative and rarely tests outcomes against objectively monitored adherence to assess whether what people say is actually reflected in what they do. This...
Article
Full-text available
Objectives This study aimed to identify barriers to, and facilitators of, implementation of the Rehabilitation EnAblement in CHronic Heart Failure (REACH-HF) programme within existing cardiac rehabilitation services, and develop and refine the REACH-HF Service Delivery Guide (an implementation guide cocreated with healthcare professionals). REACH-H...
Article
Full-text available
Background Cardiac rehabilitation for heart failure continues to be greatly underused worldwide despite being a Class I recommendation in international clinical guidelines and uptake is low in women and patients with mental health comorbidities. Methods Rehabilitation EnAblement in CHronic Heart Failure (REACH-HF) programme was implemented in four...
Article
Full-text available
Background Fidelity assessment of behaviour change interventions is vital to understanding trial outcomes. This study assesses the delivery fidelity of behaviour change techniques used in the Retirement in ACTion (REACT) randomised controlled trial. REACT is a community-based physical activity (PA) and behaviour maintenance intervention to prevent...
Article
Objective: Investigate associations between quantity, content and specificity of action-plans and weight loss in a diabetes prevention study. Design: Prospective cohort study nested within a randomised controlled trial. Participants completed action-planning worksheets during intervention sessions. Main outcome measures: Action-plans were code...
Article
Background Mobility limitations in older populations have a substantial impact on health outcomes, quality of life, and social care costs. The Retirement in Action (REACT) randomised controlled trial assessed a 12-month community-based group physical activity and behaviour maintenance intervention to help prevent decline in physical functioning in...
Article
Full-text available
Background Mobility limitations in old age can greatly reduce quality of life, generate substantial health and social care costs, and increase mortality. Through the Retirement in Action (REACT) trial, we aimed to establish whether a community-based active ageing intervention could prevent decline in lower limb physical functioning in older adults...
Article
Full-text available
Background There is a longstanding research-to-practice gap in the delivery of cardiac rehabilitation for patients with heart failure. Despite adequate evidence confirming that comprehensive cardiac rehabilitation can improve quality of life and decrease morbidity and mortality in heart failure patients, only a fraction of eligible patients receive...
Article
Full-text available
Background Impulsive processes driving eating behaviour can often undermine peoples’ attempts to change their behaviour, lose weight and maintain weight loss. Aim To develop an impulse management intervention to support weight loss in adults. Methods Intervention Mapping (IM) was used to systematically develop the “ImpulsePal” intervention. The d...
Article
Full-text available
Background: The purpose of this trial was to test if the Norfolk Diabetes Prevention Study (NDPS) lifestyle intervention, recently shown to reduce the incidence of type 2 diabetes in high-risk groups, also improved glycaemic control in people with newly diagnosed screen-detected type 2 diabetes. Methods: We screened 12,778 participants at high r...
Article
Objective: Delivery is one of the most common ways of assessing fidelity in behavioral interventions. However, there is a lack of research reporting on how well an intervention protocol reflects its proposed theoretical principles (design fidelity). This study presents a systematic method for assessing design fidelity and applies it to the eMotion...
Article
Full-text available
Background Rates of participation in centre (hospital)-cardiac rehabilitation by patients with heart failure are suboptimal. Heart failure has two main phenotypes differing in underlying pathophysiology: heart failure with reduced ejection fraction is characterised by depressed left ventricular systolic function (‘reduced ejection fraction’), where...
Article
Full-text available
Background Osteoarthritis is a prevalent condition in older adults that causes many patients to require a hip or knee replacement. Reducing patients’ sedentariness prior to surgery may improve physical function and post-operative outcomes. Methods We conducted a pragmatic randomised-controlled feasibility study with 2:1 allocation into interventio...
Article
Full-text available
Introduction: Smoking reduction can lead to increased success in quitting. This study aims to determine if a client-focused motivational support package for smoking reduction (and quitting) and increasing (or otherwise using) physical activity (PA) can help smokers who do not wish to quit immediately to reduce the amount they smoke, and ultimately...
Article
Full-text available
Background: ACE (Active, Connected, Engaged) is a theory-informed, pragmatic intervention using peer volunteering support to promote active ageing in socially disengaged, inactive older adults. This study aimed to establish ACE's feasibility and acceptability. Methods: Fifty-four older adults were recruited as either peer volunteers (activators;...
Article
Background : This study aimed to examine temporal associations between physical activity and subsequent mood in people with moderate to severe depression. Methods : The study used ecological momentary assessment to associate mood, measured via text messaging twice daily for five days, using a 10-point Likert scale, with objectively measured physic...
Preprint
Full-text available
Background: Whilst heart failure (HF) with preserved ejection fraction (HFpEF) affects almost 50 percent of the HF population, evidence-based treatment options remain limited. However, there is emerging evidence of the potential value of exercise-based cardiac rehabilitation. This study reports the process evaluation conducted as part of the REACH-...
Article
Full-text available
Background Challenges of recruitment to randomised controlled trials (RCTs) and successful strategies to overcome them should be clearly reported to improve recruitment into future trials. REtirement in ACTion (REACT) is a UK-based multi-centre RCT recruiting older adults at high risk of mobility disability to a 12-month group-based exercise and be...
Article
Full-text available
Objective: This two-site randomised trial compared the effectiveness of a voluntary sector-led, community-based diabetes prevention programme to a waiting-list control group at 6 months, and included an observational follow-up of the intervention arm to 12 months. Methods: Adults aged 18-75 years at increased risk of developing type 2 diabetes d...
Article
Full-text available
Background: There is modest evidence that exercise referral schemes (ERS) increase physical activity (PA) of inactive individuals with chronic health conditions. There is a need to identify additional ways to improve the effects of ERS on long-term PA. Objectives: To determine if adding the e-coachER intervention to ERS is more effective and cost...
Article
Full-text available
Osteoarthritis is a prevalent condition in older adults that causes many patients to require a hip or knee replacement in order to improve quality of life and reduce pain. Reducing sedentariness prior to surgery may aid in improving physical function and post-operative outcomes. Thus, we performed a pragmatic randomised controlled feasibility study...
Technical Report
Full-text available
https://www.bps.org.uk/news-and-policy/new-bps-report-shows-psychology-key-beating-obesity-problem
Article
Full-text available
Objective To identify and explore change processes explaining the effects of the Rehabilitation Enablement in Chronic Heart Failure (REACH-HF) intervention taking account of reach, amount of intervention received, delivery fidelity and patient and caregiver perspectives. Design Mixed methods process evaluation parallel to a randomised controlled t...
Article
Objectives: Although many health interventions are delivered in groups, it is unclear how group context can be best used to promote health-related behaviour change and what change processes are most helpful to participants. This study explored participants' experiences of attending type 2 diabetes prevention and management programme, and their per...
Article
Full-text available
Background Theories and meta-analyses have elucidated individual-level mechanisms of action in behaviour change interventions. Although group-based interventions are commonly used to support health-related behaviour change, such interventions rarely consider theory and research (e.g. from social psychology) on how group-level mechanisms can also in...
Article
Full-text available
Background: Caregivers frequently provide support to people living with long-term conditions. However, there is paucity of evidence of interventions that support caregivers in their role. Rehabilitation EnAblement in Chronic Heart Failure (REACH-HF) is a novel home-based, health-professional-facilitated, self-management programme for patients with...
Article
Full-text available
Background Osteoarthritis is a highly prevalent condition in older adults, that causes many sufferers to require a hip or knee replacement in order to improve their quality of life and reduce pain. Individuals waiting for hip or knee replacements are often highly sedentary; thus, it is pertinent to assess whether reducing their sedentariness prior...
Article
Full-text available
Background: The REACH-HF (Rehabilitation EnAblement in CHronic Heart Failure) trial found that the REACH-HF home-based cardiac rehabilitation intervention resulted in a clinically meaningful improvement in disease-specific health-related quality of life in patients with reduced ejection fraction heart failure (HFrEF). The aims of this study were t...
Article
Full-text available
Background The REACH-HF (Rehabilitation EnAblement in CHronic Heart Failure) trial found that the REACH-HF home-based intervention resulted in a clinically meaningful improvement in disease-specific health-related quality of life in patients with reduced ejection fraction heart failure (HFrEF). The aim of this study was to assess the longterm cost-...
Data
Supplemental material for The effects and costs of home-based rehabilitation for heart failure with reduced ejection fraction: The REACH-HF multicentre randomized controlled trial
Article
Full-text available
The primary objective of this study was to analyze the most up-to-date evidence regarding whether and how blood sugar regulation influences cardiovascular health promotion and disease prevention by carrying out an umbrella review. Three separate, systematic literature searches identified 2,343 papers in total. Overall, 44 studies were included for...
Article
Full-text available
Background The internet is a potentially promising medium for delivering weight loss interventions. The current study sought to explore factors that might influence primary care patients’ initial uptake and continued use (up to four-weeks) of such programmes to help inform the development of novel, or refinement of existing, weight management inter...
Preprint
Full-text available
BACKGROUND Impulsive processes driving eating behaviour can often undermine peoples’ attempts to lose weight and maintain weight loss. OBJECTIVE To develop an impulse management intervention to support weight loss in adults. METHODS Intervention Mapping (IM) was used to systematically develop the “ImpulsePal” intervention. The development involve...
Article
The primary objective of this study was to analyze the most up-to-date evidence regarding whether and how blood sugar regulation influences cardiovascular health promotion and disease prevention by carrying out an umbrella review. Three separate, systematic literature searches identified 2,343 papers in total. Overall, 44 studies were included for...
Article
Full-text available
Introduction: Physical activity is recommended for improving health among people with common chronic conditions such as obesity, diabetes, hypertension, osteoarthritis and low mood. One approach to promote physical activity is via primary care exercise referral schemes (ERS). However, there is limited support for the effectiveness of ERS for incre...
Preprint
Full-text available
BACKGROUND ImpulsePal is a theory-driven (dual-process), evidence-informed, and person-centered smartphone app intervention designed to help people manage impulsive processes that prompt unhealthy eating to facilitate dietary change and weight loss. OBJECTIVE The aims of this study were to (1) assess the feasibility of trial procedures for evaluat...
Article
Full-text available
Background: ImpulsePal is a theory-driven (dual-process), evidence-informed, and person-centered smartphone app intervention designed to help people manage impulsive processes that prompt unhealthy eating to facilitate dietary change and weight loss. Objective: The aims of this study were to (1) assess the feasibility of trial procedures for eva...
Article
Background Home-based models of cardiac rehabilitation may overcome suboptimal rates of participation. Aim This study sought to assess the feasibility and acceptability of a novel healthcare professional facilitated home-based comprehensive self-management REACH-HF rehabilitation intervention for patients with heart failure with preserved ejection...
Conference Paper
Introduction Evidence from systematic reviews and meta-analyses of randomised trials has led the National Institute of health and Care Excellence (NICE) and international guideline bodies to recommend centre-based cardiac rehabilitation (CR) as an effective and safe intervention for heart failure. CR reduces the risk of hospitalisations and improve...
Article
Objective: The aims of this study were to (1) develop an approach to assess the delivery fidelity of a complex intervention to simultaneously increase physical activity and reduce smoking and (2) use this approach to assess the variation of fidelity across the delivery of different intervention components of the intervention. Method: Audio recor...
Article
Full-text available
Background: The REtirement in ACTion (REACT) study is a multi-centre, pragmatic, two-arm, parallel-group randomised controlled trial (RCT) with an internal pilot phase. It aims to test the effectiveness and cost-effectiveness of a community, group-based physical activity intervention for reducing, or reversing, the progression of functional limita...