Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability Scale
Cognitive fatigue and cognitive fatigability are distinct constructs. Cognitive fatigue reflects perception of cognitive fatigue outside of the context of activity level and duration and can be reliably assessed via established instruments such as the Fatigue Severity Scale (FSS) and the Modified Fa...
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Frontiers Media S.A.
2018-10-01
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Series: | Frontiers in Aging Neuroscience |
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Online Access: | https://www.frontiersin.org/article/10.3389/fnagi.2018.00327/full |
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author | Sarah E. Burke Immanuel Babu Henry Samuel Qing Zhao Jackson Cagle Ronald A. Cohen Benzi Kluger Mingzhou Ding |
author_facet | Sarah E. Burke Immanuel Babu Henry Samuel Qing Zhao Jackson Cagle Ronald A. Cohen Benzi Kluger Mingzhou Ding |
author_sort | Sarah E. Burke |
collection | DOAJ |
description | Cognitive fatigue and cognitive fatigability are distinct constructs. Cognitive fatigue reflects perception of cognitive fatigue outside of the context of activity level and duration and can be reliably assessed via established instruments such as the Fatigue Severity Scale (FSS) and the Modified Fatigue Impact Scale (MFIS). In contrast, cognitive fatigability reflects change in fatigue levels quantified within the context of the level and duration of cognitive activity, and currently there are no reliable measures of cognitive fatigability. A recently published scale, the Pittsburgh Fatigability Scale (PFS), attempts to remedy this problem with a focus on the aged population. While the physical fatigability subscore of PFS has been validated using physical activity derived measures, the mental fatigability subscore of PFS remains to be tested against equivalent measures derived from cognitive activities. To this end, we recruited 35 older, healthy adult participants (mean age 73.77 ± 5.9) to complete the PFS as well as a prolonged continuous performance of a Stroop task (>2 h). Task-based assessments included time-on-task changes in self-reported fatigue scores (every 20 min), reaction time, and pupil diameter. Defining subjective fatigability, behavioral fatigability, and physiologic/autonomic fatigability to be the slope of change over time-on-task in the above three assessed variables, we found that the PFS mental subscore was not correlated with any of the three task-based fatigability measures. Instead, the PFS mental subscore was correlated with trait level fatigue measures FSS (ρ = 0.63, p < 0.001), and MFIS cognitive subsection (ρ = 0.36, p = 0.03). This finding suggested that the PFS mental fatigability subscore may not be an adequate measure of how fatigued one becomes after a given amount of mental work. Further development efforts are needed to create a self-report scale that reliably captures cognitive fatigability in older adults. |
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spelling | doaj.art-fcae97986a0e4c309febf8105d8343a92022-12-21T22:25:59ZengFrontiers Media S.A.Frontiers in Aging Neuroscience1663-43652018-10-011010.3389/fnagi.2018.00327415517Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability ScaleSarah E. Burke0Immanuel Babu Henry Samuel1Qing Zhao2Jackson Cagle3Ronald A. Cohen4Benzi Kluger5Mingzhou Ding6Department of Neuroscience, College of Medicine, University of Florida, Gainesville, FL, United StatesJ. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United StatesJ. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United StatesJ. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United StatesDepartment of Clinical and Health Psychology, College of Public Health and Health Professions, University of Florida, Gainesville, FL, United StatesDepartments of Neurology and Psychiatry, Anschutz School of Medicine, University of Colorado, Aurora, CO, United StatesJ. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United StatesCognitive fatigue and cognitive fatigability are distinct constructs. Cognitive fatigue reflects perception of cognitive fatigue outside of the context of activity level and duration and can be reliably assessed via established instruments such as the Fatigue Severity Scale (FSS) and the Modified Fatigue Impact Scale (MFIS). In contrast, cognitive fatigability reflects change in fatigue levels quantified within the context of the level and duration of cognitive activity, and currently there are no reliable measures of cognitive fatigability. A recently published scale, the Pittsburgh Fatigability Scale (PFS), attempts to remedy this problem with a focus on the aged population. While the physical fatigability subscore of PFS has been validated using physical activity derived measures, the mental fatigability subscore of PFS remains to be tested against equivalent measures derived from cognitive activities. To this end, we recruited 35 older, healthy adult participants (mean age 73.77 ± 5.9) to complete the PFS as well as a prolonged continuous performance of a Stroop task (>2 h). Task-based assessments included time-on-task changes in self-reported fatigue scores (every 20 min), reaction time, and pupil diameter. Defining subjective fatigability, behavioral fatigability, and physiologic/autonomic fatigability to be the slope of change over time-on-task in the above three assessed variables, we found that the PFS mental subscore was not correlated with any of the three task-based fatigability measures. Instead, the PFS mental subscore was correlated with trait level fatigue measures FSS (ρ = 0.63, p < 0.001), and MFIS cognitive subsection (ρ = 0.36, p = 0.03). This finding suggested that the PFS mental fatigability subscore may not be an adequate measure of how fatigued one becomes after a given amount of mental work. Further development efforts are needed to create a self-report scale that reliably captures cognitive fatigability in older adults.https://www.frontiersin.org/article/10.3389/fnagi.2018.00327/fullcognitive fatigabilityStroop taskfatigueperformance measuresvalidation |
spellingShingle | Sarah E. Burke Immanuel Babu Henry Samuel Qing Zhao Jackson Cagle Ronald A. Cohen Benzi Kluger Mingzhou Ding Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability Scale Frontiers in Aging Neuroscience cognitive fatigability Stroop task fatigue performance measures validation |
title | Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability Scale |
title_full | Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability Scale |
title_fullStr | Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability Scale |
title_full_unstemmed | Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability Scale |
title_short | Task-Based Cognitive Fatigability for Older Adults and Validation of Mental Fatigability Subscore of Pittsburgh Fatigability Scale |
title_sort | task based cognitive fatigability for older adults and validation of mental fatigability subscore of pittsburgh fatigability scale |
topic | cognitive fatigability Stroop task fatigue performance measures validation |
url | https://www.frontiersin.org/article/10.3389/fnagi.2018.00327/full |
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