Evidence generated from a realist synthesis of trials on educational weight loss interventions in type 2 diabetes mellitus.

BACKGROUND: Obesity and diabetes are major public health problems. Current approaches to weight loss show varying success. Complex community-based interventions work through several interconnected stages. An individual's actions in response to an intervention depend on many known and unknown factors, which vary among individuals. AIM: To conduct a realist synthesis to identify in which context, for whom, in what circumstances, and how weight loss interventions work in obese or overweight individuals with type 2 diabetes. METHODS: A total of 49 trials identified during a systematic review were subsequently analysed using realist methodology. This iterative process involved hypothesis generation about how participants within a particular context respond to an intervention's resources producing the outcomes. We used established behaviour change theory to look for repeating themes. Theory and 'mechanisms' were tested against the literature on what is shown to be effective. Where established theory was lacking, we discussed issues during discussion groups with individuals living with the condition to generate our own programme theories. RESULTS: Mechanisms that were repeatedly identified included high-frequency contact with those delivering the intervention, social support, education increasing awareness of diabetes-related modifiable risk factors, motivational interviewing and counselling, goal-setting, self-monitoring and feedback and meal replacements. The central theme underlying successful mechanisms was personalising each intervention component to the participants' gender, culture and family setting. CONCLUSION: This is the first comprehensive realist synthesis in this field. Our findings suggest that, for weight loss interventions to be successful in those with diabetes, they must be personalized to the individual and their specific context.

Use it or lose it: a qualitative study of the maintenance of physical activity in older adults.

BACKGROUND: Lack of physical activity (PA) is a recognised global public health problem, which is increasing in prevalence with a detrimental impact on the pattern of disease worldwide. In the UK, older adults comprise the most sedentary group, with only 57% of males and 52% of females aged 65-74 years and 43% of males and 21% of females aged 75-84 years meeting PA recommendations. PA confers multiple health benefits including increased stamina, muscle, bone and joint strength, increased independence and reduced risk of falls in old age. Despite benefits experienced during time-limited PA programmes, increased PA is not always continued. This study aimed to provide a better understanding of PA maintenance behaviours in older people. METHODS: Face to face semi-structured interviews were conducted with adults who completed one of two strength and balance exercise programmes as part of the ProAct65+ trial: group (FaME) and home based (OTAGO) exercises. Five GP practices in Nottingham and Derby were recruited and invited people aged 65 years and older who met eligibility criteria. Interviews were conducted in participants' homes. Interviews explored PA levels pre and post intervention, perceived health benefits, facilitators, barriers and use of technology for PA maintenance. The interviews were transcribed verbatim and analysed using framework analysis and the software NVivo10. RESULTS: Fifteen participants from each intervention group were interviewed. The FaME group consisted of 10 females and 5 males, age range of 70-88 years. The OTAGO group consisted of 12 females and 3 males aged 72-95 years. Important themes identified were physical, social, psychological and environmental facilitators and barriers. These included increased physical autonomy, enjoyment, positive evaluation of the activity and physical benefits, importance of social interaction, positive feedback, development of behaviour considered normal or habitual, motivation and self-efficacy. Some participants used technologies not included in the original interventions, like pedometers and smart phones to motivate themselves. CONCLUSIONS: A range of modifiable factors influence continued participation in PA at the end of exercise programmes. The findings from this study will inform the commissioning and quality improvement of future PA programmes and development of an intervention to enhance continuation of PA after exercise interventions in older adults.

'We got more than we expected.' Older people's experiences of falls-prevention exercise interventions and implications for practice; a qualitative study.

AIM: To explore the experiences of older adults participating in strength and balance exercise programmes and understand participants' rationale for programme uptake and completion. BACKGROUND: Regular physical activity, specifically strength and balance exercises, has been shown to improve health and well-being and reduce the risk of falling in older adults. With the number of people living into older age increasing, understanding older people's experiences of strength and balance programmes and what encourages their take-up and completion is extremely important. This paper reports on the qualitative experiences of older adults that previously participated in ProAct65+, a randomised controlled trial of Falls Management Exercise (FaME) programme and Otago Exercise Programme (OEP) versus usual care. METHODS: Ten general practices in Nottinghamshire and Derbyshire, England, who participated in the ProAct65+ trial were approached to take part. Using maximum variation sampling (age, gender, falls history, fear of falling and trial arm) we recruited, via the practices, 30 people that had participated in the FaME (n = 15) or OEP (n = 15) trial arms. Participants were interviewed in their own homes. Interviews were audio-recorded, transcribed verbatim and thematically analysed. FINDINGS: We identified five themes: choice of exercise programme; commitment, discipline and motivation; benchmarking, feedback and monitoring; benefits of the exercise programmes and reactions to the end of the programmes. There were four sub-themes within the benefits theme: pleasure and boredom, social interaction and isolation, physical benefits, and knowledge and understanding.This study has outlined the experiences and identified specific barriers and facilitators to uptake and completion of falls-prevention exercises by older adults. The perspective and experiences of these participants is important if programmes are to be designed to meet the needs of the target population. Insights from this study will enable commissioners to develop and provide appropriate falls-prevention exercise programmes that encourage high uptake and programme completion.

Risk and protective factors for falls from furniture in young children: multicenter case-control study.

IMPORTANCE: Falls from furniture are common in young children but there is little evidence on protective factors for these falls. OBJECTIVE: To estimate associations for risk and protective factors for falls from furniture in children aged 0 to 4 years. DESIGN, SETTING, AND PARTICIPANTS: Multicenter case-control study at hospitals, minor injury units, and general practices in and around 4 UK study centers. Recruitment commenced June 14, 2010, and ended April 27, 2012. Participants included 672 children with falls from furniture and 2648 control participants matched on age, sex, calendar time, and study center. Thirty-five percent of cases and 33% of control individuals agreed to participate. The mean age was 1.74 years for cases and 1.91 years for control participants. Fifty-four percent of cases and 56% of control participants were male. Exposures included safety practices, safety equipment use, and home hazards. MAIN OUTCOMES AND MEASURES: Falls from furniture occurring at the child's home resulting in attendance at an emergency department, minor injury unit, or hospital admission. RESULTS: Compared with parents of control participants, parents of cases were significantly more likely not to use safety gates in the home (adjusted odds ratio [AOR], 1.65; 95% CI, 1.29-2.12) and not to have taught their children rules about climbing on kitchen objects (AOR, 1.58; 95% CI, 1.16-2.15). Cases aged 0 to 12 months were significantly more likely to have been left on raised surfaces (AOR, 5.62; 95% CI, 3.62-8.72), had their diapers changed on raised surfaces (AOR, 1.89; 95% CI, 1.24-2.88), and been put in car/bouncing seats on raised surfaces (AOR, 2.05; 95% CI, 1.29-3.27). Cases 3 years and older were significantly more likely to have played or climbed on furniture (AOR, 9.25; 95% CI, 1.22-70.07). Cases were significantly less likely to have played or climbed on garden furniture (AOR, 0.74; 95% CI, 0.56-0.97). CONCLUSIONS AND RELEVANCE: If estimated associations are causal, some falls from furniture may be prevented by incorporating advice into child health contacts, personal child health records, and home safety assessments about use of safety gates; not leaving children, changing diapers, or putting children in car/bouncing seats on raised surfaces; allowing children to play or climb on furniture; and teaching children safety rules about climbing on objects.

Keeping children safe at home: protocol for three matched case-control studies of modifiable risk factors for falls.

BACKGROUND: Childhood falls result in considerable morbidity, mortality and health service use. Despite this, little evidence exists on protective factors or effective falls prevention interventions in young children. OBJECTIVES: To estimate ORs for three types of medically attended fall injuries in young children in relation to safety equipment, safety behaviours and hazard reduction and explore differential effects by child and family factors and injury severity. DESIGN: Three multicentre case-control studies in UK hospitals with validation of parental reported exposures using home observations. Cases are aged 0-4 years with a medically attended fall injury occurring at home, matched on age and sex with community controls. Children attending hospital for other types of injury will serve as unmatched hospital controls. Matched analyses will use conditional logistic regression to adjust for potential confounding variables. Unmatched analyses will use unconditional logistic regression, adjusted for age, sex, deprivation and distance from hospital in addition to other confounders. Each study requires 496 cases and 1984 controls to detect an OR of 0.7, with 80% power, 5% significance level, a correlation between cases and controls of 0.1 and a range of exposure prevalences. MAIN OUTCOME MEASURES: Falls on stairs, on one level and from furniture. DISCUSSION: As the largest in the field to date, these case control studies will adjust for potential confounders, validate measures of exposure and investigate modifiable risk factors for specific falls injury mechanisms. Findings should enhance the evidence base for falls prevention for young children.

The cost of postgraduate training.

The Modernising Medical Careers and European Working Time Directive have led to significant changes in the working patterns and training of junior doctors. This article seeks to explore the hidden costs incurred by trainees of various specialties and grades for postgraduate training.