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

Rana, D. et al. (2024) Lifestyle modification interventions for adults with intellectual disabilities: systematic review and meta-analysis at intervention and component levels. Journal of Intellectual Disability Research, (doi: 10.1111/jir.13098) (PMID:38414293) (Early Online Publication)

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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.

Item Type:Articles
Additional Information:This National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (Ref: NIHR128755) is registered as PROSPEROCRD 42020223290.
Keywords:Intellectual disability, lifestyle interventions, systematic review, network meta-analysis, component network meta-analysis, patient and public involvement.
Status:Early Online Publication
Glasgow Author(s) Enlighten ID:Rana, Miss Dikshyanta and Jaiswal, Dr Nishant and Westrop, Miss Sophie and Melville, Professor Craig and Mcgarty, Dr Arlene and Harris, Dr Leanne and Wu, Professor Olivia and Germeni, Dr Evi
Authors: Rana, D., Westrop, S., Jaiswal, N., Germeni, E., Mcgarty, A., Ells, L., Lally, P., McEwan, M., Melville, C., Harris, L., and Wu, O.
College/School:College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Health Economics and Health Technology Assessment
College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Mental Health and Wellbeing
College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
Journal Name:Journal of Intellectual Disability Research
ISSN (Online):1365-2788
Published Online:27 February 2024
Copyright Holders:Copyright © 2024 The Authors
First Published:First published in Journal of Intellectual Disability Research 2024
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
306874Understanding the mechanisms and effectiveness of lifestyle modification interventions in adults with learning disabilities.Olivia WuNational Institute for Health Research (NIHR)NIHR128755SHW - Health Economics & Health Technology Assessment