Teaching medical students about nutrition: from basic principles to practical strategies.

Poor nutrition is widely recognised as one of the key modifiable risks to health and life, with doctors in an ideal position to recognise when suboptimal nutrition is impacting on their patients' health and provide them with advice and support to create sustainable and achievable diet and lifestyle modifications. However, it has been acknowledged that nutrition training within medical schools is extremely varied, and in many cases inadequate. The Association for Nutrition UK Undergraduate Curriculum in Nutrition for Medical Doctors provides medical schools with guidance on what should be included in the training of all medical students. This paper discusses three key ways in which medical schools can support the implementation of nutrition into their teaching; incorporating nutrition within the core medical curriculum teaching, the use of subject specific experts to support and deliver nutrition training, and the inclusion of nutrition within formal assessment so as to reinforce and cement learnings into practical, applicable actions and advice.

Changes in Self-Efficacy and Social Support after an Intervention to Increase Physical Activity Among Adults with Type 2 Diabetes in Oman: A 12-month follow-up of the MOVEdiabetes trial.

OBJECTIVES: This study aimed to describe changes in self-efficacy (SE) and social support (SS) 12 months after the MOVEdiabetes trial, an intervention designed to increase physical activity (PA) among adults with type 2 diabetes mellitus in Oman. METHODS: The original MOVEdiabetes trial was conducted between April 2016 and June 2017 in Muscat, Oman. The intervention group (IG) received personalised PA consultations, pedometers and monthly messages using a web-based application, while the comparison group received usual care. Self-reported SE and SS from family and friends were assessed using validated psychosocial scales. RESULTS: Of the 232 original participants in the trial, a total of 174 completed the 12 months follow-up study period (response rate: 75%). However, based on intention-to-treat analysis with several imputation procedures for missing data at 3 and/or 12 months, there was a significant increase in SE scores in the IG (+10.3, 95% confidence interval [CI]: 7.1-13.5; P <0.001); however, the correlation with PA levels was weak (+4.2, 95% CI: 2.7-5.7; P <0.001). Higher SE scores were noted in those without comorbidities (+12.2, 95% CI: 6.8-17.6; P <0.001) and with high income levels (+9.7, 95% CI: 5.2-14.2; P <0.001). Additionally, SS scores increased significantly among those in the IG who received support from friends (+2.3, 95% CI: 1.1-3.7; P <0.001), but not family (+1.2, 95% CI: -0.4-2.8; P = 0.110). The reliability of the scales was acceptable for SE and SS from family, but poor for SS from friends (Cronbach's alpha coefficients = 0.82, 0.82 and 0.40, respectively). CONCLUSION: The PA intervention was associated with positive changes in SE and SS from friends. However, further tools for assessing psychosocial influences on PA are needed in Arab countries.

A novel approach to increasing community capacity for weight management a volunteer-delivered programme (ActWELL) initiated within breast screening clinics: a randomised controlled trial.

BACKGROUND: It is estimated that around 30% of breast cancers in post-menopausal women are related to lifestyle. The breast cancer-pooling project demonstrated that sustained weight loss of 2 to 4.5 kg is associated with an 18% lower risk of breast cancer, highlighting the importance of small changes in body weight. Our study aimed to assess the effectiveness a volunteer-delivered, community based, weight management programme (ActWELL) for women with a BMI > 25 kg/m2 attending NHS Scotland Breast Screening clinics. METHODS: A multicentre, 1:1 parallel group, randomised controlled trial was undertaken in 560 women aged 50 to 70 years with BMI > 25 kg/m2. On completion of baseline measures, all participants received a breast cancer prevention leaflet. Intervention group participants received the ActWELL intervention which focussed on personalised diet advice and pedometer walking plans. The programme was delivered in leisure centres by (the charity) Breast Cancer Now volunteer coaches. Primary outcomes were changes between groups at 12 months in body weight (kg) and physical activity (accelerometer measured step count). RESULTS: Two hundred seventy-nine women were allocated to the intervention group and 281 to the comparison group. Twelve-month data were available from 240 (81%) intervention and 227 (85%) comparison group participants. Coaches delivered 523 coaching sessions and 1915 support calls to 279 intervention participants. Mean weight change was - 2.5 kg (95% CI - 3.1 to - 1.9) in the intervention group and - 1.2 kg (- 1.8 to 0.6) in the comparison group. The adjusted mean difference was - 1.3 kg (95% CI - 2.2 to - 0.4, P = 0.003). The odds ratio for losing 5% weight was 2.20 (95% CI 1.4 to 3.4, p = 0.0005) in favour of the intervention. The adjusted mean difference in step counts between groups was 483 steps/day (95% CI - 635 to 1602) (NS). CONCLUSIONS: A community weight management intervention initiated at breast screening clinics and delivered by volunteer coaches doubled the likelihood of clinically significant weight loss at 12 months (compared with usual care) offering significant potential to decrease breast cancer risk. TRIAL REGISTRATION: Database of registration: ISCRTN. Registration number: 11057518 . Date trial registered:21.07.2017. Date of enrolment of first participant: 01.09.2017.

Perceived Changes in General Well-being: Findings from the 'MOVEdiabetes' Physical Activity Randomized Control Trial.

OBJECTIVES: Studies have consistently reported the health benefits of physical activity (PA) in diabetes care. Our study aimed to explore perceptions of general well-being in participants of the 'MOVEdiabetes' intervention aimed at increasing PA in adults with type 2 diabetes in Oman. METHODS: 'MOVEdiabetes' is a cluster-randomized study where participants in the intervention group (IG) received PA consultations, pedometers, and WhatsApp messages versus the usual care in the control group (CG). At baseline and 12 months, perceptions on well-being were assessed using an English translated to Arabic 13-item questionnaire. Between groups differences in responses were compared using chi-squared tests. Spearman correlation analysis was utilized to explore associations between changes in responses and self-reported PA levels (metabolic equivalent of task.min/week). RESULTS: Of the 232 participants in the 'MOVEdiabetes' study, 75.0% completed the study. Overall, findings indicate a positive effect of the intervention on perceived general health, sleep, mental health, pain, and responses to quality of life. For the IG and CG, significant associations were shown between changes in self-reported PA and general health (r = 0.70 and 0.36, p < 0.001), feeling calm/peaceful (r = 0.86 and 0.93, p < 0.001), energetic (r = 0.86 and 0.82, p < 0.001), and depressed (r = -0.35 and -0.30, p < 0.001). However, the Cronbach's alpha value was 0.50, indicating insufficient internal consistency of the assessment tool. CONCLUSIONS: The intervention has a positive effect on many parameters of well-being. Further studies are needed to identify robust tools to measure associations between well-being and PA in culturally bounded Arabic speaking countries.

Acceptability of the "MOVEdiabetes" physical activity intervention in diabetes primary care settings in Oman: findings from participants and practitioners.

BACKGROUND: Adequate physical activity (PA) is considered essential in diabetes management. However, evidence on the best method of promoting PA within diabetes care is inconclusive. The current work identifies perceptions on the acceptability of Intervention Group Participants (IGP) and Project Officers (POs) about the "MOVEdiabetes" intervention programme aimed at increasing PA in adults with type 2 diabetes in Oman (a retrospectively registered trial). METHODS: The "MOVEdiabetes" programme (PA consultations, pedometers and WhatsApp messages) was delivered by the POs (primary health care practitioners) in four primary care centres within a one-year cluster randomised control trial. Recruitment and retention were measured from trial attendance records. Programme satisfaction, appropriateness, and content suitability were assessed using exit surveys for both the IGP (interview based) and POs (self-administered). Open text questions on perceptions to the study programme were also included. RESULTS: Participants were randomised to an intervention group (IG, n = 122) or comparison group (CG, n = 110). The overall retention rate at three and 12 months was 92.7% [110(90.2%) IG vs 105(95.5%) CG] and 75% [82(67.2%) IG vs 92(83.6%) CG] respectively. Most (n = 14, 87.5%) POs and more than half (n = 49, 59.8%) IGP perceived the programme as very appropriate and many reported that they were "quite/ very satisfied" with the programme (n = 16, 100% PO's and n = 71, 86.6% IGP). Two thirds (n = 55, 66.0%) of IGP were very/quite likely to recommend the programme to others. PA consultations, use of pedometers and Whatsapp messages were well perceived by all. Participants recommended the inclusion of dietary advice and PA promotion for the general public. Exploring PA facilities within the community was suggested by POs. CONCLUSIONS: The "MOVEdiabetes" programme achieved a high retention rate and was perceived as satisfactory and appropriate. Results from this study suggest that it is worthwhile exploring the use of the "MOVEdiabetes" programme in clinical practice and further community links. TRIAL REGISTRATION: International Standard Randomised Controlled Trials No: ISRCTN14425284. Registered retrospectively on 12th April 2016.

Optimisation of the ActWELL lifestyle intervention programme for women attending routine NHS breast screening clinics.

BACKGROUND: Around 30% of post-menopausal breast cancer is related to excess body fat, alcohol intake and low levels of physical activity. Current estimates suggest that there is a 12% increased risk in post-menopausal breast cancer for every 5 kg/m2 increase in body mass index (BMI). Despite this evidence there are few lifestyle programmes directed towards breast cancer risk reduction. This paper describes the process of optimising of the ActWELL programme which aims to support weight management in women invited to attend routine National Health Service (NHS) breast screening clinics. METHODS: A feasibility study of a prototype programme aiming to change lifestyle behaviours was successfully undertaken. The programme used educational approaches and behaviour change techniques delivered by lifestyle coaches using individual face to face meetings and telephone sessions. To optimise the intervention for a definitive randomised controlled trial of weight management, data from the feasibility trial, focus group discussions conducted with the target population, feedback from the trial public advisory group and comments from peer reviewers were obtained. Concepts from implementation research provided further guidance to assist in the refinement of the intervention, which was then discussed and agreed by all investigators and the Trial Steering Group. RESULTS: The results from the feasibility trial were considered appropriate for moving on to a full trial with 70% of participants finding the programme acceptable. The primary outcomes (weight loss and physical activity) provided an important focus for design input from the target group. The contributions highlighted the need to review programme duration, coach contact time, content and use of behaviour change techniques and communications generally (e.g. science and evidence, non-judgemental approaches and avoiding guilt). In addition, the need for emphasis on support rather than education became apparent. The recommendations from peer reviewers focussed on the magnitude of effort required to achieve the intended weight loss and weight loss maintenance. Implementation science supported the use of the capability/opportunity/motivation (COM-B)model in overall design. CONCLUSIONS: The optimisation process has facilitated the development and evaluation of a programme that enables the delivery of a promising intervention to achieve weight management in post-menopausal women. TRIAL REGISTRATION: ISRCTN: ISRCTN11057518. Registered on 21 July 2017. Retrospectively registered.

'MOVEdiabetes': a cluster randomized controlled trial to increase physical activity in adults with type 2 diabetes in primary health in Oman.

OBJECTIVE: This study examined the impact of a multicomponent intervention to increase physical activity (PA) in adults with type 2 diabetes (T2D) in Oman. RESEARCH DESIGN AND METHODS: This is a cluster randomized controlled trial in eight primary health centers. Participants were physically inactive, aged ≥18 years, and with no contraindication to PA. Patients attending intervention health centers (n=4) received the 'MOVEdiabetes' intervention, which consisted of personalized, individual face-to-face consultations by dietitians. Pedometers and monthly telephone WhatsApp messages were also used. Patients attending comparison health centers received usual care. The primary outcome was change in PA [Metabolic Equivalent(MET).min/week] after 12 months assessed by the Global Physical Activity Questionnaire. The secondary outcomes were changes in daily step counts, sitting time, weight, body mass index, glycated hemoglobin, blood pressure and lipids. RESULTS: Of the 232 participants (59.1% female, mean (SD) age 44.2 (8.1) years), 75% completed the study. At 12 months, the mean change in MET.min/week was +631.3 (95% CI 369.4 to 893.2) in the intervention group (IG) vs +183.2 (95% CI 83.3 to 283.0) in the comparison group, with a significant between-group difference of +447.4 (95% CI 150.7 to 744.1). The odds of meeting PA recommendations were 1.9 times higher in the IG (95% CI 1.2 to 3.3). Significant between-group differences in favor of IG were detected for mean steps/day (+757, 95% CI 18 to 1531) and sitting time hours/ per day (-1.5, 95% CI -2.4 to -0.7). Clinical measures of systolic and diastolic blood pressure and triglycerides also showed significant intervention effects. CONCLUSIONS: 'MOVEdiabetes' was effective in increasing PA, the likelihood of meeting PA recommendations, and providing cardioprotective benefits in adults with T2D attending primary care.

Correlates of physical activity and sitting time in adults with type 2 diabetes attending primary health care in Oman.

BACKGROUND: Despite evidence of the benefits of physical activity in the management of type 2 diabetes, it is poorly addressed in diabetes care. This study aimed to identify the prevalence and correlates of meeting ≥600MET-min/wk. (150 min/wk) of physical activity and sitting time in adults with type 2 diabetes in Oman. Approaches to encourage physical activity in diabetes care were explored. METHODS: A cross-sectional study using the Global Physical Activity Questionnaire was conducted in 17 randomly selected primary health centres in Muscat. Clinical data including co-morbidities were extracted from the health information system. Questions on physical activity preferences and approaches were included. Patients were approached if they were ≥18 years, and had been registered in the diabetes clinic for >2 years. RESULTS: The questionnaire was completed by 305 people (females 57% and males 43%). Mean age (SD) was 57 (10.8) years and mean BMI (SD) was 31.0 (6.0) kg/m2. Duration of diabetes ranged from 2 to 25 (mean 7.6) years. Hypertension (71%) and dyslipidaemia (62%) were common comorbidities. Most (58.4%) had an HbA1c ≥7% indicating poor glycaemic control (55% in males vs 61% in females). Physical activity recommendations were met by 21.6% of the participants, mainly through leisure activities. Odds of meeting the recommendations were significantly higher in males (OR 4.8, 95% CI 2.5-9.1), individuals ≤57 years (OR 3.0, 95% CI 1.6-5.9), those at active self-reported stages of change for physical activity (OR 2.2, 95% CI 1.2-4.1) and those reporting no barriers to performing physical activity (OR 2.7, 95% CI 1.4-4.9). Median (25th, 75th percentiles) sitting time was 705 (600, 780) min/d. Older age (>57 years) was associated with longer sitting time (>705 min/d) (OR 2.8, 95% CI 1.7-4.6). Preferred methods to support physical activity in routine diabetes care were consultations (38%), structured physical activity sessions (13.4%) and referrals to physical activity facilities (5.6%) delivered by a variety of health care providers. CONCLUSIONS: The results suggest that intervention strategies should take account of gender, age, opportunities within daily life to promote active behaviour and readiness to change. Offering physical activity consultations is of interest to this study population, thus development and evaluation of interventions are warranted.

Study protocol for "MOVEdiabetes": a trial to promote physical activity for adults with type 2 diabetes in primary health care in Oman.

BACKGROUND: Benefits of physical activity in the management of diabetes are well documented. However, evidence on the effectiveness of interventions integrating physical activity in diabetes care is sparse especially in the countries of the Gulf Cooperation Council. The results from this study will increase our understanding of the use of multi-component interventions aimed at increasing physical activity levels in inactive adults with type 2 diabetes in primary health care in Oman. METHODS/DESIGN: The study is a one year 1:1 cluster randomized controlled trial of the MOVEdiabetes programme (intervention) versus usual care in eight primary health care centres in Oman. The MOVEdiabetes programme utilizes face to face physical activity consultations promoting 150 min of moderate to vigorous physical activity per week (≥600MET-mins/week), pedometers to self-monitor step counts and monthly telephone WhatsApp messages for follow up support. Inactive adults with type 2 diabetes and no contraindication to physical activity will be recruited over a two months period, and followed up for 12 months. To demonstrate a 50% between group difference in physical activity levels (MET-mins/week) over 12 months, (at a power of 80%, and significance level of 5%), 128 participants would be required to complete the study (64 in each arm). Based on a drop-out rate of 20%, 154 participants would require to be recruited (77 in each arm). Assuming a recruitment rate of 70%, 220 potential eligible participants would need to be approached. The primary outcome is change in levels of physical activity measured by the Global Physical Activity Questionnaire. In addition, accelerometers will be used in a sub group to objectively assess physical activity. Secondary outcomes include changes in metabolic and cardiovascular biomarkers, change in self-reported health, social support, self-efficacy for physical activity, and perceived acceptability of the program. All intervention delivery and support costs will be monitored. DISCUSSION: This study will contribute to the evidence on the feasibility, cultural acceptability and efficacy of interventional approaches for increasing physical activity in primary care for persons with type 2 diabetes in Oman. TRIAL REGISTRATION: International Standard Randomised Controlled Trials No: ISRCTN14425284 . Registered 12 April 2016.

Health professionals' perceptions about physical activity promotion in diabetes care within primary health care settings in Oman.

BACKGROUND: As part of formative work to inform an interventional design to increase physical activity (PA) in patients with type 2 diabetes in Oman, this qualitative study aimed to determine health professionals' perception of barriers and opportunities, personnel responsibilities and plausible PA promotional approaches. METHODS: Four focus group discussions were carried out with groups of health care professionals (family physicians, dieticians and health educators, managers and general practitioners). All discussions were audio recorded and transcribed. Responses were analysed using a thematic analysis. RESULTS: Barriers to PA reported by participants (n = 29) were identified at three levels: health care system (e.g. deficient PA guidelines); individual (e.g. obstructive social norms) and community (e.g. lack of facilities). Participants felt that a multilevel approach is needed to address perceived barriers and to widen current opportunities. In the presence of various diabetes primary care providers, the potential for dieticians to include individualised PA consultations as part of their role was highlighted. Participants felt that consultations should be augmented by approaches within the community (volunteer support and/or appropriate facilities). However, despite lack of experience with technology supported approaches and motivational tools, the telephone application "WhatsApp" and use of pedometers were considered potentially suitable. The need for training in behaviour change techniques and clearly communicated intervention guidelines was emphasised. CONCLUSIONS: A multi-component approach including PA consultations, possibly led by trained dieticians, technological routes for providing support along with community mapping for resources appear to offer promising approaches for further PA intervention studies within diabetes primary health care.

Awareness of Lifestyle and Colorectal Cancer Risk: Findings from the BeWEL Study.

It is estimated that 47% of colorectal cancers (CRC) could be prevented by appropriate lifestyles. This study aimed to identify awareness of the causes of CRC in patients who had been diagnosed with a colorectal adenoma through the Scottish Bowel Screening Programme and subsequently enrolled in an intervention trial (using diet and physical activity education and behavioural change techniques) (BeWEL). At baseline and 12-month follow-up, participants answered an open-ended question on factors influencing CRC development. Of the 329 participants at baseline, 40 (12%) reported that they did not know any risk factors and 36 (11%) failed to identify specific factors related to diet and activity. From a potential knowledge score of 1 to 6, the mean score was 1.5 (SD 1.1, range 0 to 5) with no difference between intervention and control groups. At follow-up, the intervention group had a significantly greater knowledge score and better weight loss, diet, and physical activity measures than the control group. Awareness of relevant lifestyle factors for CRC remains low in people at increased risk of the disease. Opportunities within routine NHS screening to aid the capability (including knowledge of risk factors) of individuals to make behavioural changes to reduce CRC risk deserve exploration.

Why are some people more successful at lifestyle change than others? Factors associated with successful weight loss in the BeWEL randomised controlled trial of adults at risk of colorectal cancer.

BACKGROUND: The BeWEL (BodyWEight and physicaL activity) randomised controlled trial demonstrated that a weight management programme offered in the colorectal cancer screening setting was effective. However, the differential responses of participants to the programme were notable. This study aimed to explore the factors associated with success and to identify implications for future programme design. METHODS: Analyses were conducted of quantitative data (n = 148) from the BeWEL intervention group to compare demographic and psychosocial characteristics and lifestyle changes in those who met and exceeded the target 7% weight loss ('super-achievers') with those who achieved only 'moderate' or 'low' amounts of weight loss (2-7% loss, or <2% loss, respectively). In-depth qualitative interviews (n = 24) explored in detail the motivations, actions, pathways to weight loss and circumstances of study participants. RESULTS: Over the 12 month intervention period, mean percentage weight loss of super-achievers (n = 33) was 11.5%, compared with moderate-achievers (n = 58) who lost 4.2%, and low-achievers (n = 57) who gained 0.8%. Compared to other groups, super- achievers increased their fruit and vegetable intake (p < 0.01) and physical activity (step count, p < 0.01). 'Super-achievers' did not differ in baseline demographic characteristics from other participants. However, significantly fewer reported that their activities were limited by physical and emotional health and they were more likely to perceive their current diet as harmful. Qualitative analyses found no consistent patterns among super-achievers in relation to some factors identified as important in previous studies, such as social support. However, super-achievers shared several characteristics such as determination and consistency in their engagement with the intervention, receptivity to new information and prompts, previous positive experience of changing health behaviours, being motivated by early success, making changes routine, and an ability to devise and apply strategies for dealing with setback and 'relapse' triggers. CONCLUSIONS: Successful lifestyle change depends on active engagement as well as effective intervention ingredients. Weight loss interventions are likely to be more effective where they can adapt to participants' differing characteristics and needs, while also providing core elements likely to build success.

Lowering of oxidative stress improves endothelial function in healthy subjects with habitually low intake of fruit and vegetables: a randomized controlled trial of antioxidant- and polyphenol-rich blackcurrant juice.

Inadequate intake of the recommended five-a-day fruit and vegetable portions might contribute to increased cardiovascular disease risk. We assessed the effects of dietary intake of a blackcurrant juice drink, rich in vitamin C and polyphenols, on oxidative stress and vascular function. This was a double-blind, placebo-controlled, parallel group study of 66 healthy adults who habitually consume <2 portions of fruit and vegetables per day. Participants were randomly allocated to consume 250ml of placebo (flavored water) or low or high blackcurrant juice drink four times a day for 6 weeks. Flow-mediated dilation (FMD) and plasma concentrations of F2-isoprostanes and vitamin C were measured. In the high blackcurrant juice drink group FMD increased significantly (5.8±3.1 to 6.9±3.1%, P=0.022) compared with the placebo group (6.0±2.2 to 5.1±2.4%). Plasma vitamin C concentration increased significantly in the low (38.6±17.6 to 49.4±21.0µmol/L, P<0.001) and high (34.6±20.4 to 73.8±23.3µmol/L, P<0.001) blackcurrant juice drink groups compared with the placebo group (38.1±21.0 to 29.0±17.6µmol/L). F2-isoprostane concentrations were significantly lower in the high blackcurrant juice drink group (225±64pg/ml) compared with the low blackcurrant juice drink (257±69pg/ml, P=0.002) and placebo group (254±59pg/ml, P=0.003). At follow-up, changes in plasma vitamin C correlated significantly with changes in FMD (r=0.308, P=0.044). Consumption of blackcurrant juice drink high in vitamin C and polyphenols can decrease oxidative stress and improve vascular health in individuals with habitually low dietary fruit and vegetable intake.

The impact of a bodyweight and physical activity intervention (BeWEL) initiated through a national colorectal cancer screening programme: randomised controlled trial.

OBJECTIVE: To evaluate the impact of a diet and physical activity intervention (BeWEL) on weight change in people with a body mass index >25 weight (kg)/height (m)(2) at increased risk of colorectal cancer and other obesity related comorbidities. DESIGN: Multicentre, parallel group, randomised controlled trial. SETTING: Four Scottish National Health Service health boards. PARTICIPANTS: 329 overweight or obese adults (aged 50 to 74 years) who had undergone colonoscopy after a positive faecal occult blood test result, as part of the national bowel screening programme, and had a diagnosis of adenoma confirmed by histopathology. 163 were randomised to intervention and 166 to control. INTERVENTION: Participants were randomised to a control group (weight loss booklet only) or 12 month intervention group (three face to face visits with a lifestyle counsellor plus monthly 15 minute telephone calls). A goal of 7% reduction in body weight was set and participants received a personalised energy prescription (2508 kJ (600 kcal) below that required for weight maintenance) and bodyweight scales. Motivational interviewing techniques explored self assessed confidence, ambivalence, and personal values concerning weight. Behavioural strategies included goal setting, identifying intentions of implementation, self monitoring of body weight, and counsellor feedback about reported diet, physical activity, and weight change. MAIN OUTCOME MEASURES: The primary outcome was weight change over 12 months. Secondary outcomes included changes in waist circumference, blood pressure, fasting cardiovascular biomarkers, and glucose metabolism variables, physical activity, diet, and alcohol consumption. RESULTS: At 12 months, data on the primary outcome were available for 148 (91%) participants in the intervention group and 157 (95%) in the control group. Mean weight loss was 3.50 kg (SD 4.91) (95% confidence interval 2.70 to 4.30) in the intervention group compared with 0.78 kg (SD 3.77) (0.19 to 1.38) in the control group. The group difference was 2.69 kg (95% confidence interval 1.70 to 3.67). Differences between groups were significant for waist circumference, body mass index, blood pressure, blood glucose level, diet, and physical activity. No reported adverse events were considered to be related to trial participation. CONCLUSIONS: Significant weight loss can be achieved by a diet and physical activity intervention initiated within a national colorectal cancer screening programme, offering considerable potential for risk reduction of disease in older adults. TRIAL REGISTRATION: Current Controlled Trials ISRCTN53033856.

Meeting the challenges of recruitment to multicentre, community-based, lifestyle-change trials: a case study of the BeWEL trial.

BACKGROUND: Recruiting participants to multicentre, community-based trials is a challenge. This case study describes how this challenge was met for the BeWEL trial, which evaluated the impact of a diet and physical activity intervention on body weight in people who had had pre-cancerous bowel polyps. METHODS: The BeWEL trial was a community-based trial, involving centres linked to the Scottish National Health Service (NHS) colorectal cancer screening programme. BeWEL had a recruitment target of 316 and its primary recruitment route was the colonoscopy clinics of the Scottish Bowel Screening Programme. RESULTS: BeWEL exceeded its recruitment target but needed a 6-month no-cost extension from the funder to achieve this. The major causes of delay were lower consent rates (49% as opposed to 70% estimated from earlier work), the time taken for NHS research and development department approvals and the inclusion of two additional sites to increase recruitment, for which there were substantial bureaucratic delays. A range of specific interventions to increase recruitment, for example, telephone reminders and a shorter participant information leaflet, helped to increase the proportion of eligible individuals consenting and being randomized. CONCLUSIONS: Recruitment to multicentre trials is a challenge but can be successfully achieved with a committed team. In a UK context, NHS research and development approval can be a substantial source of delay. Investigators should be cautious when estimating consent rates. If consent rates are less than expected, qualitative analysis might be beneficial, to try and identify the reason. Finally, investigators should select trial sites on the basis of a formal assessment of a site's past performance and the likelihood of success in the trial being planned. TRIAL REGISTRATION: Current Controlled Trials ISRCTN53033856.

Recruiting and retaining postpartum women from areas of social disadvantage in a weight-loss trial--an assessment of strategies employed in the WeighWell feasibility study.

Little is known about the response of post-partum women from deprived backgrounds to weight management interventions, however behavioural intervention trials in disadvantaged communities are often characterised by recruitment difficulties. Recruitment and retention is key to the robust conduct of an effective trial, and exploratory work is essential prior to a definitive randomised controlled trial. This paper describes strategies used to recruit to the WeighWell feasibility study, which aimed to recruit 60 overweight or obese post-partum women living in areas of deprivation to a trial of a weight-loss intervention. Recruitment strategies included the following: (1) distribution of posters and 'business cards'; (2) newspaper advertisements; (3) visits to community groups; and (4) personalised letters of invitation sent via the National Health Service (NHS). Potential participants were screened for eligibility following response to a Freephone number. Body mass index was calculated using self-reported body weight and height. Over 6 months, 142 women responded of whom 65 (46%) met the eligibility criteria. The most effective methods for recruiting eligible women and those who went on to complete the study (n = 36) were visits to community groups (37% and 42%, respectively), personalised letters (26% and 17%, respectively) and posters and 'business cards' (22% and 31%, respectively). These results emphasise the need to utilise a range of strategies beyond traditional NHS settings. Current approaches might be enhanced by sending personal contact letters via their General Practitioner to women identified as eligible at post-natal discharge. Under-reporting of body weight by self-report suggests that a threshold lower than 25 kg/m(2) should be utilised for screening purposes.

Detailed protocol for the lifestyle intervention in the BeWEL randomised controlled trial of weight loss in adults who have had a colorectal adenoma.

INTRODUCTION: The BeWEL study is aimed at assessing the impact of a personalised lifestyle programme on body weight in people at risk of developing colorectal adenomas. The study is a two-arm multicentre randomised controlled trial comparing the BeWEL lifestyle programme against usual care. Over 12 months, 316 people who have had a colorectal adenoma removed through the national screening programme will be randomised to provide 80% power to detect a weight loss (primary outcome) of 7% over 12 months. METHODS: The 12-month intervention will be delivered by lifestyle counsellors via three face-to-face visits followed by nine monthly telephone support calls. Consultant endorsement for the study will be stressed. An individualised caloric prescription based on estimates for weight maintenance -600 kcal will be calculated. Motivational interviewing techniques will be used to identify personal motivations for weight change and ways to improve perceived self-efficacy. The programme will utilise personalised diet and physical activity data from baseline measures to set behavioural goals. A range of behavioural strategies will be employed to support lifestyle change including goal setting, identifying specific implementation intentions, self-monitoring and feedback. Emphasis will be placed on self-monitoring body weight, and weighing scales will be provided. Programme acceptability will be explored postintervention with indepth interviews. Compliance and impact will be assessed by baseline and follow-up measures of diet by self-report, activity by accelerometry and anthropometry. ETHICS AND DISSEMINATION: Ethical approval has been obtained from the Tayside Committee on Medical Research Ethics. Dissemination of results will focus on publications in peer-reviewed journals, presentations at national/international cancer meetings and NHS groups. In addition, the work will be communicated to the public through forums such at The Scottish Cancer Prevention Network (http://www.cancerpreventionscotland.co.uk/). The trial is registered with Current Controlled Trials (International Standard Randomised Controlled Trials No: ISRCTN53033856).

Understanding the potential and challenges of adenoma treatment as a prevention opportunity: insights from the BeWEL formative study.

OBJECTIVES: To explore prevention opportunities presented by colorectal adenoma diagnosis and inform engagement strategies for the BeWEL study (body weight and physical activity lifestyle intervention for colorectal cancer screening participants who have undergone adenoma removal). METHODS: Qualitative study comprising 4 purposively sampled focus groups conducted in urban and rural areas in Tayside, Scotland, with different deprivation levels. Participants were men and women (n=17) aged 50-74 with BMI>25 kg/m(2) with removal of adenoma detected by colorectal cancer screening. RESULTS: Adenoma diagnosis presents both opportunities and challenges for prevention. Some patients perceived adenoma as minor and not sufficiently motivating to act as a 'teachable moment'. Patients had low awareness of the relationship between adenoma and lifestyle factors, and received little information on prevention during screening and treatment. Consequently they interpreted post-treatment 'all clear' messages as validation of existing lifestyles, and did not see the relevance of prevention advice. Receptiveness increased when the association between lifestyle, adenoma recurrence and other illness was explained. CONCLUSION: The study illustrates the value of exploratory research into patient understanding to improve communications and health services. Without unduly worrying patients, professionals should explain how to reduce risk of adenoma, cancer and other diseases, particularly through diet, physical activity and weight reduction.

Tracking of obesity-related behaviours from childhood to adulthood: A systematic review.

Obesity in childhood carries a wide range of physical, psychological and social disbenefits and also increases the risk of adult obesity with its well-recognised, enhanced risk of several common complex diseases as well as adverse socioeconomic and psychosocial sequelae. Understanding the tracking of the two key modifiable behaviours, food consumption and physical activity, between childhood and adulthood may illuminate the childhood determinants of adult obesity and contribute to the development of effective interventions. We performed a systematic review of the available literature on tracking of both physical activity and of dietary intake between childhood and adulthood by searching MEDLINE, EMBASE, CINAHL, PSYCInfo, Google and Google Scholar. For inclusion, studies had to report baseline measurements when the children were less than, or equal to, 18 years and to report follow-up for at least 5 years to any age over 18 years. After removal of duplicates, 9625 search hits were screened by title and/or abstract and 79 potentially relevant papers were identified and full papers obtained. In total 39 papers were included in this analysis. Of these, 11 papers (from 5 studies) reported data on tracking of diet from childhood to adulthood and 28 papers (from 16 studies) reported data on tracking of physical activity or inactivity. Despite the diversity of study design and measurement methodology, we found evidence of tracking of both physical activity and of diet between childhood and adulthood with estimates of strength of tracking of a similar order for both behaviours. Because of the inherent methodological difficulties in quantifying habitual behaviour, it is likely that the reported estimates of strength of tracking under-estimate the true degree of tracking. The evidence of tracking reported here may give greater impetus to the development of interventions aimed to prevent the persistence of obesity from childhood into adulthood and its attendant adverse socioeconomic, psychosocial and health sequelae.