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Published in: BMC Geriatrics 1/2019

Open Access 01-12-2019 | Research article

Effects of exergame training combined with omega-3 fatty acids on the elderly brain: a randomized double-blind placebo-controlled trial

Authors: Alexandra Schättin, Corinne Baier, Domenique Mai, Verena Klamroth-Marganska, Isabelle Herter-Aeberli, Eling D. de Bruin

Published in: BMC Geriatrics | Issue 1/2019

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Abstract

Background

Older adults often suffer from age- and behavior-related brain changes affecting neuronal functioning and, therefore, cognitive and motor functions. The improvement of these functions might decrease falls and improve mobility. Previous studies indicate that video game-based physical exercise, so-called exergames, or omega-3 fatty acids (FAs) improve motor and cognitive functioning through brain adaptations. The aim of this study was to assess the effects of exergame training combined with fish oil supplementation on neuronal system levels in the brain and behavioral measurements in older adults. We hypothesized that the combination would differently affect these factors compared to the sole administration of exergame.

Methods

Fifty-eight participants were randomly assigned to one of two groups (N = 29 each group) in a parallel, double-blind, randomized controlled trial lasting 26 weeks. The experimental group received daily fish oil, whereas the control group received daily olive oil. After 16 weeks, both groups started with an exergame training. Measurements were performed pre, during, and post intervention. Primary outcomes were recruitment curves using transcranial magnetic stimulation and response-locked potentials using electroencephalography. Secondary outcomes included executive functions and gait parameters. Blood samples were taken to control for FAs.

Results

Forty-three individuals (mean age 69.4 ± 4.6 years) completed the study (Nexperimental = 22, Ncontrol = 21). The results showed no significant time × group interaction effects for any parameters. Blood samples demonstrated significant time × group interaction effects. Post-hoc tests showed a significant increase of omega-3 FAs (p < .001) and a significant decrease of omega-6 FAs (p < .001) for the experimental group.

Conclusion

The combination of exergame training and fish oil did not lead to additional beneficial effects. To trigger possible effects, future studies should carefully consider study design aspects; e.g. study duration, individual nutritional supplementation dose, omega-3 FAs supplementation composition, and placebo. Furthermore, studies should consider neuroimaging methods as these might be more sensitive to assess early brain adaptations. Thus, future studies should be aware of several aspects running a combinatory study that includes omega-3 FAs according to their expected effects.

Trial registration

Swiss National Clinical Trials SNCTP000001623 and ISRCTN12084831 registered 30 November 2015.
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Metadata
Title
Effects of exergame training combined with omega-3 fatty acids on the elderly brain: a randomized double-blind placebo-controlled trial
Authors
Alexandra Schättin
Corinne Baier
Domenique Mai
Verena Klamroth-Marganska
Isabelle Herter-Aeberli
Eling D. de Bruin
Publication date
01-12-2019
Publisher
BioMed Central
Published in
BMC Geriatrics / Issue 1/2019
Electronic ISSN: 1471-2318
DOI
https://doi.org/10.1186/s12877-019-1084-4

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