The effects of multi-component weight management interventions on weight loss in adults with intellectual disabilities and obesity: A systematic review and meta-analysis of randomised controlled trials

Weight-loss interventions for adolescents with Down syndrome: a systematic review

OBJECTIVE

Youth with Down syndrome (DS) experience high rates of overweight and obesity; therefore, weight-loss interventions are warranted. We aimed to systematically review weight-loss interventions for adolescents with DS to better understand the most effective strategies and identify the current gaps in the literature.

METHODS

This systematic review followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines (International Prospective Register of Systematic Reviews [PROSPERO] #CRD42022303781). Databases were searched through July 28, 2023, and screening, evaluation, and data extraction were performed by two independent reviewers. Change scores for weight or BMI were presented by study design and intervention components.

RESULTS

The 26 included papers describing 24 unique studies included a total of n = 1171 participants, of whom n = 393 were participants with DS. Eleven studies focused on physical activity, one on diet, and two on physical activity and diet; seven studies used multicomponent interventions; and three studies investigated laparoscopic sleeve gastrectomy. Thirteen studies using either a multicomponent intervention, a physical activity intervention, or surgery resulted in weight loss or a decrease in BMI in adolescents with DS.

CONCLUSIONS

Weight-loss interventions can be effective for adolescents with DS and could benefit from increasing duration/intensity to meet the existing weight-loss intervention recommendations. More research on surgery and weight-loss medications is needed.

Effect of weight loss intervention for adults with severe intellectual disability by their mothers: A cluster randomized controlled trial

While adults with intellectual disabilities have a high prevalence of obesity, few weight loss interventions exist for them, and those that do exist target people with mild or moderate disabilities. To address obesity in adults with severe intellectual disabilities who are highly dependent, we developed the "Conflict-Free Weight Loss Program for Adults with Severe ID and Autism" to support their mothers and piloted the program, and the results showed that it was effective for weight loss. This study aimed to determine the feasibility of day center nurses and dieticians implementing the "Conflict-Free Weight Loss Program for Adults with Severe ID and Autism" and whether this would support effective weight loss in adults with severe intellectual disabilities, both with and without autism. A cluster randomized controlled trial per day center was registered at UMIN Clinical Trials Registry (UMIM-CTR ID;UMIN000047478) and was conducted with 31 adults with severe intellectual disabilities in Aichi, Japan. The seven-month trial consisted of a four-month intervention and a three-month follow-up; 15 adults in the intervention group and 13 in the control group completed the follow-up. Primary outcomes included the adults' weight and waist circumference, and differences between groups were analyzed using the Friedman tests. The secondary outcomes were mothers' implementation, adults' scores for inflexible adherence, and daily intake of target food. The intervention group showed significantly reduced weight (median; baseline 1, post-intervention 0.975, follow-up 0.983, p <  0.001), and slightly reduced waist circumference (median; baseline 1, post-intervention 0.975, follow-up 0.975, p =  0.226); however, the control group showed no change. Adults' resistance was minimal, maternal implementations were high, and daily food intake decreased. Our findings indicate that our program was feasible for day center nurses and dietitians to implement and has the potential to reduce the weight of adults with severe intellectual disabilities.

Understanding the effectiveness and underlying mechanisms of lifestyle modification interventions in adults with learning disabilities: a mixed-methods systematic review

Background

Adults with learning disabilities face increased risks of unhealthy lifestyle behaviours, including alcohol consumption, smoking, low physical activity, sedentary behaviour and poor diet. Lifestyle modification interventions that target health-risk behaviours can prevent or reduce their negative effects. The goal of this project was to investigate the effectiveness and underlying mechanisms of lifestyle modification interventions in adults with learning disabilities.

Methods

A systematic review and meta-analysis were conducted to determine the effectiveness of lifestyle modification interventions and their components in targeting health risk behaviours in adults with learning disabilities. Major electronic databases, clinical trial registries, grey literature, and citations of systematic reviews and included studies were searched in January 2021 (updated in February 2022). We included randomised and non-randomised controlled trials targeting alcohol consumption, smoking, low physical activity only, sedentary behaviour and poor diet in adults (aged ≥ 18 years) with learning disabilities. Studies were also coded based on the extent of use of theories and behaviour change techniques in interventions. Risk of bias in studies was assessed using appropriate tools. A realist synthesis of qualitative, quantitative and mixed-methods literature was conducted to complement the systematic review findings by identifying key intervention mechanisms that are likely to improve the health of adults with learning disabilities. Data were synthesised in the form of a programme theory regarding complex causal mechanisms and how these interact with social context to produce outcomes. All findings were integrated into a logic model. A patient and public involvement group provided input and insights throughout the project.

Results

A total of 80 studies with 4805 participants were included in the systematic review. The complexity of lifestyle modification interventions was dismantled by identifying six core components that influenced outcomes. These components could be present in interventions targeting single or multiple health risk behaviors, either as individual elements or in various combinations. Interventions on alcohol and smoking behaviours were found to be effective, but this was based on limited evidence. The effectiveness of interventions targeting low physical activity only or multiple behaviours (low physical activity only, sedentary behaviours and poor diet) was mixed. All interventions had a varying level of statistical significance. The intervention-level network meta-analysis for weight management outcomes showed none of the interventions was associated with a statistically significant change in outcomes when compared to treatment as usual and each other. Similar findings were observed in the component network meta-analysis. A variety of theories and behaviour change techniques were employed in the development and adaptation of interventions. Most studies had a high and moderate risk of bias. A total of 79 studies, reporting the experiences of more than 3604 adults with intellectual disabilities and over 490 caregivers, were included in the realist synthesis. The resulting programme theory highlighted the contexts and mechanisms relating to support involvement, negotiating the balance between autonomy and behaviour change, fostering social connectedness and fun, the accessibility and suitability of intervention strategies and delivery, along with the broader behavioural pathways to lifestyle change. It also brought out the importance of working with people with lived experiences when developing and evaluating interventions. Our logic model, bringing together the findings of both syntheses, provides guidance on the design of future interventions.

Discussion

This study was the first comprehensive mixed-methods evidence synthesis to explore lifestyle modification interventions targeting multiple unhealthy lifestyle behaviours in adults with learning disabilities. We conclude that future research could benefit from codeveloping interventions and population-specific assessment frameworks with people with lived experiences. There is a need for more high-quality research with appropriate outcomes and a focus on qualitative and mixed-methods research to better understand what works for whom and why.

Trial registration

This trial is registered as PROSPERO CRD 42020223290.

Funding

This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: NIHR128755) and is published in full in Health Technology Assessment; Vol. 29, No. 4. See the NIHR Funding and Awards website for further award information.

Pay Attention to Hypertension (PAtH): Findings from a cardiovascular health promotion intervention for adults with intellectual disabilities participating in Special Olympics programming

BACKGROUND

Cardiovascular disease (CVD) affects adults globally. People with intellectual disabilities (PWID) may be at higher risk of CVD and associated risk factors (e.g. obesity, hypertension, and diabetes). We developed Pay Attention to Hypertension (PAtH), a cardiovascular health promotion intervention, and tested its impact on changes in blood pressure (BP), lifestyle behaviours and health-related empowerment among PWID.

METHODS

PAtH was developed with a Special Olympics community organisation that supports PWID in developing self-confidence and social skills through participation in sports. The 6-month intervention consisted of 1-h individualised virtual sessions delivered monthly by nursing students/novice nurses. Sessions covered specific themes, including monitoring BP, adopting healthy lifestyles and managing stress, and were individually tailored to the capacities and needs of participants. A single group pre-post-intervention design was used to assess the intervention's effects among participants who completed the intervention and data collection. Data included baseline and follow-up BP measurements from 7-day logbooks and questionnaires assessing lifestyle behaviours [physical activity (PA), screen time and diet], and health-related empowerment.

RESULTS

Seventy-four participants were included in the analyses. Between baseline and follow-up, there were no changes in systolic and diastolic BP, PA or leisure screen time. The proportion of participants who reported adding salt when cooking decreased from baseline to follow-up (19.7% vs. 12.7%, P = 0.034), and we found improvements for several items measuring health-related empowerment (P ≤ 0.003).

CONCLUSION

Improvements in health-related empowerment were found following PAtH. More intensive interventions may be needed to result in changes in lifestyle behaviours and BP. The integration of adapted cardiovascular health promotion initiatives within well-established community organisations such as Special Olympics is a promising avenue to contribute to cardiovascular health promotion among PWID.

Lifestyle modification interventions for adults with intellectual disabilities: systematic review and meta-analysis at intervention and component levels

BACKGROUND

Adults with intellectual disabilities (IDs) are susceptible to multiple health risk behaviours such as alcohol consumption, smoking, low physical activity, sedentary behaviour and poor diet. Lifestyle modification interventions can prevent or reduce negative health consequences caused by these behaviours. We aim to determine the effectiveness of lifestyle modification interventions and their components in targeting health risk behaviours in adults with IDs.

METHODS

A systematic review and meta-analysis were conducted. Electronic databases, clinical trial registries, grey literature and citations of systematic reviews and included studies were searched in January 2021 (updated February 2022). Randomised controlled trials and non-randomised controlled trials targeting alcohol consumption, smoking, low physical activity, sedentary behaviours and poor diet in adults (aged ≥ 18 years) with ID were included. Meta-analysis was conducted at the intervention level (pairwise and network meta-analysis) and the component-level (component network meta-analysis). Studies were coded using Michie's 19-item theory coding scheme and 94-item behaviour change taxonomies. Risk of bias was assessed using the Cochrane Risk of Bias (ROB) Version 2 and Risk of Bias in Non-randomised Studies of Interventions (ROBINS-I). The study involved a patient and public involvement (PPI) group, including people with lived experience, who contributed extensively by shaping the methodology, providing valuable insights in interpreting results and organising of dissemination events.

RESULTS

Our literature search identified 12 180 articles, of which 80 studies with 4805 participants were included in the review. The complexity of lifestyle modification intervention was dismantled by identifying six core components that influenced outcomes. Interventions targeting single or multiple health risk behaviours could have a single or combination of multiple core-components. Interventions (2 RCTS; 4 non-RCTs; 228 participants) targeting alcohol consumption and smoking behaviour were effective but based on limited evidence. Similarly, interventions targeting low physical activity only (16 RCTs; 17 non-RCTs; 1413 participants) or multiple behaviours (low physical activity only, sedentary behaviours and poor diet) (17 RCTs; 24 non-RCTs; 3164 participants) yielded mixed effectiveness in outcomes. Most interventions targeting low physical activity only or multiple behaviours generated positive effects on various outcomes while some interventions led to no change or worsened outcomes, which could be attributed to the presence of a single core-component or a combination of similar core components in interventions. The intervention-level meta-analysis for weight management outcomes showed that none of the interventions were associated with a statistically significant change in outcomes when compared with treatment-as-usual and each other. Interventions with core-components combination of energy deficit diet, aerobic exercise and behaviour change techniques showed the highest weight loss [mean difference (MD) = -3.61, 95% credible interval (CrI) -9.68 to 1.95] and those with core-components combination dietary advice and aerobic exercise showed a weight gain (MD 0.94, 95% CrI -3.93 to 4.91). Similar findings were found with the component network meta-analysis for which additional components were identified. Most studies had a high and moderate risk of bias. Various theories and behaviour change techniques were used in intervention development and adaptation.

CONCLUSION

Our systematic review is the first to comprehensively explore lifestyle modification interventions targeting a range of single and multiple health risk behaviours in adults with ID, co-produced with people with lived experience. It has practical implications for future research as it highlights the importance of mixed-methods research in understanding lifestyle modification interventions and the need for population-specific improvements in the field (e.g., tailored interventions, development of evaluation instruments or tools, use of rigorous research methodologies and comprehensive reporting frameworks). Wide dissemination of related knowledge and the involvement of PPI groups, including people with lived experience, will help future researchers design interventions that consider the unique needs, desires and abilities of people with ID.

Supporting active engagement of adults with intellectual disabilities in lifestyle modification interventions: a realist evidence synthesis of what works, for whom, in what context and why

BACKGROUND

Lifestyle modification interventions for adults with intellectual disabilities have had, to date, mixed effectiveness. This study aimed to understand how lifestyle modification interventions for adults with intellectual disabilities work, for whom they work and in what circumstances.

METHODS

A realist evidence synthesis was conducted that incorporated input from adults with intellectual disabilities and expert researchers. Following the development of an initial programme theory based on key literature and input from people with lived experience and academics working in this field, five major databases (MEDLINE, EMBASE, CINAHL, PsycINFO and ASSIA) and clinical trial repositories were systematically searched. Data from 79 studies were synthesised to develop context, mechanism and outcome configurations (CMOCs).

RESULTS

The contexts and mechanisms identified related to the ability of adults with intellectual disabilities to actively take part in the intervention, which in turn contributes to what works, for whom and in what circumstances. The included CMOCs related to support involvement, negotiating the balance between autonomy and behaviour change, fostering social connectedness and fun, accessibility and suitability of intervention strategies and delivery and broader behavioural pathways to lifestyle change. It is also essential to work with people with lived experiences when developing and evaluating interventions.

CONCLUSIONS

Future lifestyle interventions research should be participatory in nature, and accessible data collection methods should also be explored as a way of including people with severe and profound intellectual disabilities in research. More emphasis should be given to the broader benefits of lifestyle change, such as opportunities for social interaction and connectedness.

Weight reduction and dietary improvements in a cluster-randomised controlled trial for adults with intellectual disabilities

Background

People with intellectual disabilities (IDs) have an increased risk of obesity and health concerns related to their nutritional status and dietary intake.

Objective

To assess the effectiveness of a multi-component intervention on weight, waist circumference (WC), clinical health parameters and dietary habits in a group of overweight and obese adults with mild-to-moderate ID.

Design

A 7-month cluster-randomised trial and a 7-month follow-up of the intervention group after the end of intervention when the group received usual care. The intervention consisted of monthly dietary-group courses tailored to the participants' cognitive abilities and practical skills, monthly nutritional courses for staff, use of behaviour change techniques and nudging. The control group received usual care during the intervention.

Results

There were 32 participants aged 22-61 years: 15 in the intervention group and 17 in the control group. After 7 months, a non-significant weight difference (median difference = -1.25 kg; 95% confidence interval [CI] = -2.00; 0.95 vs. +1.00 kg; CI = -1.15; 3.00, P = 0.08) and a significant WC difference were observed between the intervention and control groups (median difference = -3.75 cm; CI: -7.68; 0.11 vs. 0 cm; CI = -3.99; 1.00, P = 0.03), respectively. The median reduction in WC continued in the intervention group during the 7-month follow-up (median difference = -7.50 cm; CI: -13.57; -3.16, P = 0.002). A significant difference in frequency intake of fruit (P = 0.03) and berries (P = 0.004) was observed between the groups after 7 months, supported by a significant increase in measured serum-carotenoid levels in the intervention group after 7 months (median difference = 0.26 mmol/L; CI: -0.12; 0.52, P = 0.007).

Conclusions

A significant difference in WC was observed between the groups, accompanied by changes in blood parameters and dietary habits.

Effects of exercise on body mass index and waist circumference of individuals with intellectual and developmental disabilities: a systematic review with meta-analysis

Introduction/Methods: This systematic review with meta-analysis aims to assess the magnitude of the effects of physical exercise programs on body mass index (BMI) and waist circumference (WC) of individuals with Intellectual and Developmental Disabilities (IDD), metabolic and cardiovascular health markers. Results: Considering the eligibility criteria, a final sample of nine articles was obtained. For BMI, the Z-value obtained to test the null hypothesis (difference between means is zero), showed a Z = -2.176 and p = 0.03. The highest magnitude of the effect was from the intervention with combined training (difference in means: -0.399), with a value of Z = -1.815 and p = 0.07. For WC, the Z-value is zero, showing a Z = -3.306 and p = 0.001. The highest magnitude of the effect was from the intervention with continuous cardiorespiratory training of -0.786, with a value of Z = -2.793 and p = 0.005. Discussion: Physical exercise prevents increases in BMI and WC in individuals with IDD. Aerobic training seems to be more effective in promoting WC and combined training in BMI. Systematic Review Registration: [PROSPERO], identifier [CRD42021255316].

Effects of exercise training on obesity-related parameters in people with intellectual disabilities: systematic review and meta-analysis

BACKGROUND

Efforts to synthesise existing knowledge concerning the effects of exercise interventions on obesity (i.e. changes in body weight and composition) have been made, but scientific evidence in this matter is still limited. This systematic review and meta-analysis aims to identify and critically analyse the best available evidence regarding the use of physical exercise as a strategy to attenuate obesity through its effects on adiposity-related anthropometric parameters in people with intellectual disability (ID).

METHODS

Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, a literature search was performed using PubMed, Scopus, SPORTDiscus, CINAHL and the Cochrane Library through specific keywords up to July 2020. The search adhered to the population, intervention, comparison and outcome strategy. Randomised controlled trials addressing the effects of the exercise intervention on adiposity-related anthropometric parameters (body mass index, waist circumference, waist-hip ratio, fat percentage or body weight) in children, adolescents and adults with ID were included. The methodological quality of the studies found was evaluated through the PEDro scale.

RESULTS

A total of nine investigations with children and/or adolescents (10-19 years) and 10 investigations with adults (18-70 years) were selected, mostly experiencing mild and moderate ID. Methodological quality was fair in 13 of these publications, good in five and excellent in one. Seventeen trials reported comparable baseline and post-intervention data for the intervention and control groups and were included in the meta-analysis. In nine studies, the intervention group performed a cardiovascular training programme. Five papers described a combined training programme. Two trials executed whole-body vibration training programmes, and one publication proposed balance training as the primary intervention. According to the meta-analysis results, the reviewed studies proposed exercise modalities that, in comparison with the activities performed by the participants' in the respective control groups, did not have a greater impact on the variables assessed.

CONCLUSIONS

While physical exercise can contribute to adiposity-related anthropometric parameters in people with mild and moderate ID, these findings show that exercise alone is not sufficient to manage obesity in this population. Multicomponent interventions appear to be the best choice when they incorporate dietary deficit, physical activity increase and behaviour change strategies. Finding the most effective modality of physical exercise can only aid weight loss interventions. Future research would benefit from comparing the effects of different exercise modalities within the framework of a multicomponent weight management intervention.

A Systematic Review of Health Promotion Programs to Improve Nutrition for People with Intellectual Disability

PURPOSE OF REVIEW

To investigate the type and effectiveness of health promotion programs designed to improve nutrition for people with intellectual disability. This review also sought to highlight gaps in the evidence by mapping interventions to the socio-ecological model.

RECENT FINDINGS

To date, reviews on health promotion programs for people with intellectual disability have focused on individualised weight management interventions and behaviour change techniques. No reviews have focused solely on nutrition or considered a broader range of interventions and policies targeted beyond the individual. This review found that health promotion interventions to date were predominantly at the individual level of the socio-ecological model and of varying effectiveness. Of the non-individually focused interventions, those targeting the physical environment or considering multiple socio-ecological levels achieved the greatest improvements in nutrition outcomes. Nutrition and obesity prevention research and policy need to include intellectual disability as part of equity considerations, while intellectual disability policy needs to consider the broader food environment.

Factors that potentially influence successful weight loss for adults with intellectual disabilities: A qualitative comparison

BACKGROUND

People with intellectual disabilities are more at risk of obesity than the general population. Emerging literature indicates that multicomponent interventions are most effective, however, individual results are variable and little research exists as to why this is the case.

METHODS

Focus groups were conducted to explore lived experiences between two groups of adults with intellectual disabilities; an overweight group (n = 6) and a group identified as successful in losing weight (n = 6). Similarities and differences were explored across four domains. Transcripts were produced and analysed using Theoretical Thematic Analysis.

RESULTS

Similarities included service centre supports, basic food knowledge and issues restricting independence. The successful weight loss group had also internalised health messages, engaged with external reinforcement programmes, responded to positive feedback and demonstrated healthier dietary habits.

CONCLUSION

Weight management interventions would benefit from understanding the influence that internalisation of health messages, effective reinforcement systems and positive feedback can have on supporting the adoption of healthier habits.

POWERSforID: Personalized online weight and exercise response system for individuals with intellectual disability: A randomized controlled trial

BACKGROUND

Obesity is associated with early mortality and chronic disease among adults with intellectual disability (ID), yet there is a paucity of effective weight management interventions for this population.

OBJECTIVE/HYPOTHESIS

This pilot study examined a tailored intervention on weight loss, waist circumference, A1c, and lipid profile among adults with ID.

METHODS

Obese adults (BMI ≥ 30 kg/m2) with mild to moderate ID were randomized to an intervention (n = 17) or comparison group (n = 18) for a 24-week trial. All participants completed health-related questionnaires and clinic visits. Participants in the intervention group received access to an online weight management platform that assisted them in monitoring their diet and physical activity along with weekly coaching calls (weeks 1-12) that were tapered off to calls every other week (weeks 12-24). The comparison group completed questionnaires and clinic visits, but did not receive access to the online platform or calls. Differences in weight, waist circumference, percent body fat, A1c, lipid profile were assessed at baseline and at week 24.

RESULTS

The intervention group reduced body weight by an average of 2.7% (-2.6 kg; p = 0.02) and waist circumference by 3.4% (-3.89 cm; p = 0.02) versus the comparison. There were no statistically significant group by time interactions observed among other variables.

CONCLUSION

Adults with ID who received the intervention were able to maintain or slightly reduce their body weight and waist circumference after the 24-week intervention. Despite not achieving the targeted sample size, the pilot study findings serve as a basis for developing accessible weight management interventions for people with ID.

Understanding the effectiveness and underlying mechanisms of lifestyle modification interventions in adults with learning disabilities: protocol for a mixed-methods systematic review

BACKGROUND

Adults with learning disabilities have an increased disposition to unhealthy lifestyle behaviours which often occur simultaneously. Existing studies focus on complex interventions targeting unhealthy diet, physical inactivity, sedentary behaviour, smoking, and alcohol use to reduce health risks experienced. It is essential to understand how well these interventions work, what works, for whom, in what context and why. This study aims to investigate the effectiveness and underlying mechanisms of lifestyle modification interventions for adults with learning disabilities.

METHODS

This is a mixed-methods systematic review consisting of a network meta-analysis (NMA) and realist synthesis. Electronic databases (ASSIA, CINAHL, EMBASE, MEDLINE, and PsycINFO) will be searched from inception to 14 January 2021 with no language restriction. Additionally, trial registries, grey literature databases and references lists will be searched. Studies related to lifestyle modification interventions on the adult population (>18 years) with learning disabilities will be eligible for inclusion. Two independent researchers will screen studies, extract data and assess its quality and risk of bias using the Cochrane Collaboration's Risk of Bias Assessment Tool (RoB Version 2) and ROBINS-I. The strength of the body of evidence will be assessed based on the GRADE approach. The NMA will incorporate results from RCTs and quasi-experimental studies to estimate the effectiveness of various lifestyle interventions. Where appropriate, a component NMA (CNMA) will be used to estimate effectiveness. The realist synthesis will complement and explain the findings of NMA and CNMA by including additional qualitative and mixed-methods studies. Studies will be included based on their relevance to the programme theory and the rigour of their methods, as determined by quality appraisal tools appropriate to the study design. Results from both syntheses will be incorporated into a logic model.

DISCUSSION

The paucity of population-specific lifestyle interventions contributes to the challenges of behaviour change in adults with learning disabilities. This study will provide an evidence-base from which various stakeholders can develop effective interventions for adults with learning disabilities. The evidence will also help prioritise and inform research recommendations for future primary research so that people with learning disabilities live happier, healthier and longer lives.

TRIAL REGISTRATION

PROSPERO CRD 42020223290.

Comparison of Oxygen Saturation Between Nasal High-Flow Oxygen and Conventional Nasal Cannula in Obese Patients Undergoing Dental Procedures With Deep Sedation: A Randomized Crossover Trial

PURPOSE

In anesthetic management, it is widely accepted that obese patients are more likely to suffer airway obstructions and reductions in arterial oxygen saturation (SpO₂). Therefore, it is important to take special measures to prevent oxygen desaturation during the deep sedation of obese patients. This clinical study examined whether the use of nasal high-flow systems (NHFS) keep higher SpO₂ and reduced hypoxemia than conventional nasal cannula during the deep sedation of obese patients with intellectual disabilities for dental treatment.

MATERIALS AND METHODS

Eighteen obese patients (body mass index: >25) with intellectual disabilities who underwent dental sedation were enrolled. In each case, sedation was induced using propofol and maintained at a bispectral index of 50 to 70. The subjects were randomly assigned to the control oxygen administration (5 L/min via a nasal cannula) or NHFS (40% O₂, 40 L/min, 37 °C) arm in alternate shifts as a crossover trial. The primary endpoint was the minimum SpO₂ value, and the incidence of hypoxemia during dental treatment was also evaluated.

RESULTS

The mean minimum SpO₂ value was significantly higher in the NHFS arm than in the control arm (95.8 ± 2.1 % vs 93.6 ± 4.1 %, P = 0.0052, 95% confidence interval: 0.608-3.947). Hypoxemic episodes (SpO₂: ≤94%) occurred 3 cases (16.7%) in the NHFS arm and 11 cases (61.1%) in the control arm (P = 0.0076, odds ratio: 0.127, 95% confidence interval 0.0324 - 0.630).

CONCLUSION

NHFS resulted in higher minimum SpO₂ and reduced hypoxemia than nasal cannula in obese patients during deep sedation for dental treatment.

Weight outcomes in children with developmental disabilities from a multidisciplinary clinic

BACKGROUND

Children with developmental disabilities experience disparately high rates of obesity yet there are few reports detailing clinical outcomes for this population.

AIM

To describe outcomes of obesity treatment for children with developmental disabilities and a comparison group of children without developmental disabilities.

METHODS AND PROCEDURES

We examined weight outcomes of children with and without developmental disabilities seen in a family-centered, multidisciplinary treatment center over a ten-year period. We stratified by age and developmental disability diagnosis. We assessed whether intake demographic or health behavior data was associated with successful reduction of adiposity over six and twelve month follow-up periods, using a ≥5% absolute reduction in percent over the 95th percentile body mass index (BMIp95) as the primary outcome.

OUTCOMES AND RESULTS

Over a ten-year period, 148 of 556 children in the obesity clinic (27 %) had a developmental disability. In children <12 years of age, 36 % of children with developmental disabilities reduced their adiposity compared with 18 % of children without developmental disabilities at six months, p = .01. This pattern continued at twelve months. Active transport to school was associated with reduced adiposity for those without a disability. Older children with disabilities rarely had a significant reduction (2 of 26 children), and they took more medications with weight-related side effects.

CONCLUSIONS AND IMPLICATIONS

Younger children with developmental disabilities experienced relative success in reducing their adiposity. Challenges to addressing obesity in this population include structural barriers to physical activity and medications for behavioral management with weight-related side effects.

An exploration of lifestyle/obesity programmes for adults with intellectual disabilities through a realist lens: Impact of a 'context, mechanism and outcome' evaluation

BACKGROUND

Obesity is higher in people with intellectual disabilities.

AIMS

There are two aims of this explorative paper. Firstly, using a realist lens, to go beyond 'what works' and examine the 'context, mechanisms and outcomes' (CMO) of lifestyle/obesity programmes for this population. Second, using a logic model framework to inform how these programmes could be implemented within practice.

METHOD

We explored six-review papers and the individual lifestyle/obesity programmes that these papers reviewed using the CMO framework.

RESULTS

There were few theoretically underpinned, multi-component programmes that were effective in the short to long-term and many failed to explore the 'context and mechanisms'. We developed a logic model and engaged in two co-production workshops to refine this model.

DISCUSSION

Using a realist approach, programmes need to be underpinned by both individual and systems change theories, be multi-component, have a closer understanding of the interplay of the 'context and mechanisms', and co-designed using a logic model framework.

Bidirectional longitudinal associations of fatness with physical fitness in adolescents with Down syndrome. The UP&DOWN Longitudinal study

BACKGROUND

The aim of this study was to examine the bidirectional longitudinal associations of several markers of fatness and physical fitness in adolescents with Down syndrome.

METHODS

This study comprised a total of 111 adolescents (41 females), aged from 11 to 20 years with complete data at the baseline. We had a drop-out of <10% from the baseline to the 2-year follow-up. The ALPHA health-related fitness test battery for youth was used.

RESULTS

Our results show that all fatness variables at the baseline were associated with a 2-year change in cardiorespiratory fitness (β ranging from -0.32 to -0.38; all p < .05), but not with muscular and motor fitness (p > .05). However, no associations were found between physical fitness components as predictors and fatness indicators (p > .05).

CONCLUSIONS

Results suggest that reducing fatness during adolescence might represent a modifiable factor to improve cardiorespiratory fitness at the 2-year follow-up, but not vice versa since associations were not bidirectional.

Effects of obesity on balance in people with intellectual disabilities

BACKGROUND/AIM

To know the differences in balance of people with intellectual disability with and without obesity.

METHOD

549 people with intellectual disability were evaluated. Participants were categorized as obese or non-obese according to their body mass index. All participants were evaluated with tests for static and semi-static balance.

RESULTS

There were significant differences in the static balance between obese and non-obese people with intellectual disability. For women, there were not significant differences for any tests; in contrast for men, there were only significant differences in the SLSCE in people aged 37-46 years.

CONCLUSIONS

Significant differences were found in static balance between non-obese and obese people. In the analyses, in consideration of gender and age range, significant differences were only found in one static balance test, in the young adult men´s group. No significant differences were found in women, either in middle-aged adults or in older adults.

Evidences from Clinical Trials in Down Syndrome: Diet, Exercise and Body Composition

Down syndrome (DS) is related to diseases like congenital heart disease, obstructive sleep apnea, obesity and overweight. Studies focused on DS associated with obesity and overweight are still scarce. The main objective of this work was to analyze the relationship between dietary intervention, physical exercise and body composition, in DS with overweight and obesity. This review is based on the PRISMA guidelines (Preferred Reporting Items for Systematic reviews and Meta-Analyses). Selection criteria for this analysis were: publications between January 1997 and December 2019; DS individuals with overweight and obesity; clinical trials using dietary intervention and physical exercise paying attention to changes in body composition. Selected clinical trials were focused on an exclusive intervention based on physical exercise. The anthropometric measures analyzed were body fat, BMI, waist circumference, body weight and fat free mass. The main conclusion is that prescribing structured physical exercise intervention may be related to a greater variation in body composition. Despite limited number of clinical trials analyzed, it can be assumed that the reported studies have not achieved optimal results and that the design of future clinical trials should be improved. Some guidelines are proposed to contribute to the improvement of knowledge in this field.

Predictors of perceived health in adults with an intellectual disability

BACKGROUND

The effects of Intellectual disability (ID) levels, body mass index (BMI) categories, and other factors on perceived health status of adults with ID are not well-known.

AIMS

We aimed to examine: (a) the relationship between perceived health and level of intellectual function; (b) the influence of different BMI categories on a perceived health; and (c) the effect of the modifiable behavioral factors on perceived health.

METHODS AND PROCEDURES

We examined the aims using data from the 2013-2014 Adult Consumer Survey of the National Core Indicator. We extracted demographic (e.g. age, BMI) and modifiable behavior-related variables (e.g. physical activity participation, having a job) and used logistic regression models to analyze the relationships.

OUTCOMES AND RESULTS

Logistic regressions showed that more severe ID level is associated with worse perceived health, but when other variables related to personal and behavioral characteristics were accounted for, this relationship was no longer significant. Obese adults with ID had worse perceived health than those with normal weight; this effect remained significant even after considering other variables. Those in the overweight category did not differ in perceived health status from those of normal weight. The effects of all modifiable behaviors on perceived health were significant.

CONCLUSIONS AND IMPLICATIONS

Health promotion programs for adults with ID may benefit by consideration of modifiable behaviors.

Is fatness or fitness key for survival in older adults with intellectual disabilities?

BACKGROUND

Overweight/obesity and poor physical fitness are two prevalent lifestyle-related problems in older adults with intellectual disabilities, which each require a different approach. To improve healthy ageing, we assessed whether fatness or fitness is more important for survival in older adults with intellectual disabilities.

METHODS

In the HA-ID study, we measured obesity and fitness of 874 older adults with intellectual disabilities (61.4 ± 7.8 years). All-cause mortality was assessed over a 5-year follow-up period.

RESULTS

Fitness, but not obesity, was significantly related to survival (HR range of 0.17-0.22). People who were unfit were 3.58 (95% CI = 1.72-7.46) to 4.59 (95% CI = 1.97-10.68) times more likely to die within the follow-up period than people who were fit, regardless of obesity.

CONCLUSION

This was the first study to show that being fit is more important for survival than fatness in older adults with intellectual disabilities. The emphasis should, therefore, shift from weight reduction to improving physical fitness.

Feedback and Strategies From People With Intellectual Disability Completing a Personalized Online Weight Loss Intervention: A Qualitative Analysis

Coaching log notes for 15 participants from a 24-week blended online and telehealth randomized controlled trial were analyzed using thematic analysis and analyst triangulation to determine the factors that facilitated participant adherence to weight loss strategies, use of technology, and motivational interviewing. Several participants reported that restricting processed carbohydrates, limiting portion size, and maintaining healthy substitutions were effective nutritional strategies. Participants were less successful with adherence to their exercise goals, often due to time constraints and a lack of support. Results suggested consistent caregiver support improved participants' adherence to weight loss strategies and use of technology. Future programs should address obesity among people with intellectual and developmental disabilities by offering a range of interventions that are customized to their specific weight loss needs.

Obesity in youth and adults with intellectual disability in Europe and Eurasia

BACKGROUND

Information about obesity among people with intellectual disability comes mostly from small-scale, national samples in high-income countries. There are limited data from transnational studies.

METHOD

BMI scores had been obtained for over 25,000 youth and adults with intellectual disabilities drawn from 60 European and Eurasian countries. Their height and weight had been measured using standardized procedures when they attended Special Olympics Healthy Athletes events.

RESULTS

Binary logistic regression identified higher levels of obesity for athletes living in high-income countries, and for adult females, for those aged 30 years and over, and also for youth aged 8-13 years.

CONCLUSIONS

Participation in sports does not appear to have protected these athletes from obesity. Arguably, this remains the most pressing health issue for people with intellectual disability, particularly in Western Europe.

Healthcare practitioners' views and experiences of barriers and facilitators to weight management interventions for adults with intellectual disabilities

BACKGROUND

Obesity is common in adults with intellectual disabilities, yet little is known about how weight management interventions are provided for this population.

METHODS

Semi-structured interviews were held with 14 healthcare practitioners involved in weight management interventions in an English county. A study topic guide was developed to elicit practitioners' views and experiences of barriers and facilitators to weight management for adults with intellectual disabilities. Responses were analysed using thematic analysis.

RESULTS

Several barriers are involved in weight management for people with intellectual disabilities including communication challenges, general practitioners' lack of knowledge and awareness of weight management services, inconsistencies in caring support, resource constraints, wider external circumstances surrounding the individuals and motivational issues. Facilitators include reasonable adjustments to existing weight management services. However, there is a need for specialist weight management provision for people with intellectual disabilities.

CONCLUSIONS

This study provides suggestions for future research, policy and practice consideration.

Process evaluation of a cluster-randomised controlled trial of multi-component weight management programme in adults with intellectual disabilities and obesity

BACKGROUND

Providing effective weight management to adults with intellectual disabilities is necessary to challenge the high rates of obesity. The aim of this process evaluation was to explore the feasibility of conducting a full-scale clinical trial of the TAKE 5 multi-component weight management programme.

METHODS

The study was a 12-month pilot cluster-randomised controlled trial. Adults with intellectual disabilities and obesity were randomised to either TAKE 5, which included an energy deficit diet (EDD) or Waist Winners Too, based on health education principles. A mixed-methods process evaluation was conducted focussing on the reach, recruitment, fidelity, implementation, dose (delivered/received) and context.

RESULTS

The study successfully recruited adults with intellectual disabilities. Both weight management programmes were delivered with high fidelity and implemented as intended. Only one weight management programme, TAKE 5, demonstrated potential efficacy in reducing body weight and body composition. The effectiveness was largely attributed to the EDD and social support from carers.

CONCLUSIONS

The extensive process evaluation illustrated that a full-scale trial of a multi-component programme including an EDD is feasible and an acceptable approach to weight management for adults with intellectual disabilities and obesity.

Correlates of Sedentary Behaviour in Adults with Intellectual Disabilities-A Systematic Review

Individuals with intellectual disabilities (ID) are at high risk for high levels of sedentary behaviour. To inform the development of programmes to reduce sedentary behaviour, insight into the correlates is needed. Therefore, the aim of this study is to review the evidence on correlates of sedentary behaviour in adults with ID. We performed a systematic literature search in Ovid Medline, Ovid Embase, Web of Science and Google Scholar up to 19 January 2018, resulting in nine included studies that were published from 2011 to 2018. Correlates were categorized according to the ecological model. Studies predominantly focused on individual level correlates. Of those correlates studied in more than one study, having epilepsy was associated with less sedentary behaviour and inconsistent results were found for sex, genetic syndromes, weight status, physical health, mobility, level of ID, and mental health. Of the few interpersonal and environmental factors studied, only living arrangements were studied in more than one study, with inconsistent results. To date, we have limited and inconclusive evidence about correlates of sedentary behaviour in adults with ID. Only when future studies unravel correlates and determinants, across all domains of the ecological model, will the potential opportunities to improve health by reducing sedentary behaviour come within reach.