Effects of Working Memory Load on Performance and Cardiovascular Activity in Younger and Older Workers.
Background: Working memory (WM) declines with ageing, and this may cause problems in older workers who have to do complex work requiring WM. Purpose: We tested the assumption that an increase in WM load negatively affects performance and results in impaired cardiovascular adaptation to changing task...
| Publicado en: | International Journal of Behavioral Medicine Vol. 19; no. 3; pp. 359 - 372 |
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| Autores principales: | , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Springer Nature
Sep2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104494833&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104494833 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10705503 7M2 jtl: International Journal of Behavioral Medicine issn: 10705503 maglogo: N pubinfo: dt: Sep2012 vid: 19 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104494833 79119738 10.1007/s12529-011-9181-6 NLM21786145 104494833 ppf: 359 ppct: 13 formats: fmt: @attributes: type: P tig: atl: Effects of Working Memory Load on Performance and Cardiovascular Activity in Younger and Older Workers. aug: au: Schapkin, Sergei Freude, Gabriele Gajewski, Patrick Wild-Wall, Nele Falkenstein, Michael affil: Federal Institute for Occupational Safety and Health, Nöldnerstrasse 40-42 10317 Berlin Germany sug: subj: Occupational Health Workload Memory Adaptation, Occupational Age Factors Heart Rate Variability Human Germany Male Female Adult Middle Age Job Characteristics Baroreflex Heart Rate Blood Pressure Determination Factor Analysis Health Behavior Electrocardiography Spectral Analysis Clinical Assessment Tools Analysis of Variance Data Analysis Software T-Tests Descriptive Statistics Adult: 19-44 years Middle Aged: 45-64 years Male Female ab: Background: Working memory (WM) declines with ageing, and this may cause problems in older workers who have to do complex work requiring WM. Purpose: We tested the assumption that an increase in WM load negatively affects performance and results in impaired cardiovascular adaptation to changing task demands in older workers relative to younger ones. Method: Thirty-three younger (29 ± 3 years) and 32 older (55 ± 3 years) workers had to perform a visual 0-back (low WM load) and 2-back (high WM load) task. Heart rate (HR), heart rate variability (HRV), beat-to-beat blood pressure (BP) and baroreflex were registered. Results: In the high WM load condition, older adults responded more slowly and less accurately than younger adults, while no age effects in the low WM load condition were found. Older workers showed a higher systolic blood pressure (SBP) reactivity to high WM load as well as a diminished post-task recovery of SBP and HRV than younger workers. Factor analysis demonstrated a close relationship between HR, baroreflex and HRV and their modulation by a common factor ('vagal tone') in the younger group. By contrast, HR was more related to the 'sympathetic' factor in the older group. Conclusion: The data suggest that older workers as compared with younger ones are impaired in tasks requiring WM, which is accompanied by enhanced cardiovascular 'costs' in terms of increased SBP and reduced vagal control over HR. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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