Effects of exercise training on obesity-related parameters in people with intellectual disabilities: systematic review and meta-analysis.
Exercise by itself does not shrink obesity in people with ID—bundle it with diet and behavior supports or expect no change.
01Research in Context
What this study did
The team pooled 17 randomized trials that tested exercise-only programs for adults with mild-to-moderate intellectual disability.
All studies compared exercise groups to control groups that did light activity or stayed on wait lists.
What they found
Exercise alone did not shrink BMI, waist size, or body-fat any more than the control activities.
In plain words: moving more without food or behavior plans does not budge the scale.
How this fits with other research
Bertapelli et al. (2016) already warned that exercise-only plans fail kids with Down syndrome. The new meta shows the same dead end for adults with any ID.
Mount et al. (2011) looks like a contradiction: their adults with ID lost 6% of body weight. But they added portion-controlled meals, walking, and picture self-monitoring with small cash rewards. The difference is the add-ons, not the exercise alone.
McGonigle et al. (2014) gives another clue: ten weeks of treadmill work cut inflammation in obese women with Down syndrome even though weight stayed put. Exercise can help health markers even when the scale refuses to move.
Why it matters
Stop writing goals that only count gym minutes. Pair any movement plan with diet tweaks, self-monitoring, and caregiver training. Ask the doctor about meds that pile on pounds. Track waist and BMI each quarter, not just step counts.
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02At a glance
03Original abstract
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.
Journal of intellectual disability research : JIDR, 2022 · doi:10.1111/jir.12928