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- Zammit, A. R., et al.
(author)
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A Coordinated Multi-study Analysis of the Longitudinal Association Between Handgrip Strength and Cognitive Function in Older Adults
- 2021
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In: The journals of gerontology. Series B, Psychological sciences and social sciences. - : Oxford University Press (OUP). - 1758-5368 .- 1079-5014. ; 76:2, s. 229-241
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Journal article (peer-reviewed)abstract
- OBJECTIVE: Handgrip strength, an indicator of overall muscle strength, has been found to be associated with slower rate of cognitive decline and decreased risk for cognitive impairment and dementia. However, evaluating the replicability of associations between aging-related changes in physical and cognitive functioning is challenging due to differences in study designs and analytical models. A multiple-study coordinated analysis approach was used to generate new longitudinal results based on comparable construct-level measurements and identical statistical models and to facilitate replication and research synthesis. METHODS: We performed coordinated analysis on 9 cohort studies affiliated with the Integrative Analysis of Longitudinal Studies of Aging and Dementia (IALSA) research network. Bivariate linear mixed models were used to examine associations among individual differences in baseline level, rate of change, and occasion-specific variation across grip strength and indicators of cognitive function, including mental status, processing speed, attention and working memory, perceptual reasoning, verbal ability, and learning and memory. Results were summarized using meta-analysis. RESULTS: After adjustment for covariates, we found an overall moderate association between change in grip strength and change in each cognitive domain for both males and females: Average correlation coefficient was 0.55 (95% CI = 0.44-0.56). We also found a high level of heterogeneity in this association across studies. DISCUSSION: Meta-analytic results from nine longitudinal studies showed consistently positive associations between linear rates of change in grip strength and changes in cognitive functioning. Future work will benefit from the examination of individual patterns of change to understand the heterogeneity in rates of aging and health-related changes across physical and cognitive biomarkers. Published by Oxford University Press on behalf of The Gerontological Society of America 2019.
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- Praetorius, Gesa, 1980-, et al.
(author)
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How to Train for Everyday Work - A Comparative Study of Non-technical Skill Training
- 2021
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In: Proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021). - Cham : Springer. - 9783030746018 - 9783030746025 ; , s. 534-542
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Conference paper (peer-reviewed)abstract
- This paper presents a comparative study of training of non-technical skills in the maritime and lignite power domains. Non-technical skills (NTS) are the cognitive, social and personal resource skills that complement technical skills in operations within high-risk domains. Training NTS is essential to maintain safety in operational contexts, such as onboard a merchant vessel or in the operation of a lignite power plant. Contextual interviews and observations have been conducted across 8 operator training courses, three maritime and five lignite power. The results indicate that the training approaches and their execution differs greatly despite having a common theoretical basis. While training in the observed maritime courses often combined longer theoretical lectures with group exercises and high-fidelity simulations, the focus of the training remained on the use of specific NTS techniques or tools to prevent accidents and incidents. In contrast to this approach, the training in the lignite power domain primarily focused on how to integrate selected NTS into daily operations. While the lignite training also utilized incident examples and shorter lectures, the focus remained on simulating everyday work tasks and to apply newly learned practices as part of routine operations and standard operational procedures. Further, trainees in the lignite training courses were empowered to take charge of their learning processes, as parts of the training let them recreate situations from their work within the simulator. This article highlights lessons learned from each domain with the goal of improving training practices for NTS in high-risk operations.
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