The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled Trial

Background: Aerobic exercise is an effective treatment to improve aerobic capacity following stroke and might also improve cognitive impairments in sub-acute stroke survivors. The aim of the study was to assess the effect of high-intensity aerobic exercise on cognitive impairments in sub-acute strok...

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Main Authors: Hanne Pallesen, Maria Bjerk, Asger Roer Pedersen, Jørgen Feldbæk Nielsen, Lars Evald
Format: Article
Language:English
Published: SAGE Publishing 2019-04-01
Series:Journal of Central Nervous System Disease
Online Access:https://doi.org/10.1177/1179573519843493
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author Hanne Pallesen
Maria Bjerk
Asger Roer Pedersen
Jørgen Feldbæk Nielsen
Lars Evald
author_facet Hanne Pallesen
Maria Bjerk
Asger Roer Pedersen
Jørgen Feldbæk Nielsen
Lars Evald
author_sort Hanne Pallesen
collection DOAJ
description Background: Aerobic exercise is an effective treatment to improve aerobic capacity following stroke and might also improve cognitive impairments in sub-acute stroke survivors. The aim of the study was to assess the effect of high-intensity aerobic exercise on cognitive impairments in sub-acute stroke survivors. Methods: A pilot, randomised controlled trial on the effects of aerobic exercise on cognitive impairments of stroke patients in the sub-acute (1-3 months) phase was conducted. Thirty patients with moderate cognitive impairments (maximum score of 5 on at least two items on the cognitive subscales of the Functional Independence Measure [FIM]) were included in the study and randomly assigned to either the intervention group – performing high-intensity aerobic exercise (above 70% of maximum heart rate), or the control group – performing low-intensity aerobic exercise (below 60%). Patients in both groups exercised for 50 min twice a week for 4 weeks. Primary neuropsychological outcome: Trail Making Test B. Results: Thirty stroke patients completed the interventions. The results showed that the high-intensity group, compared with the low-intensity group, achieved significant improvements on Trail Making Test B, which assesses processing speed and divided attention ( P  = .04 after training and P  = .01 at follow-up). However, the significant improvements on Trail Making Test B might relate to a ceiling effect in the control group. Conclusions: This study does not provide evidence to support that aerobic exercise can improve cognition in stroke survivors, even though significant improvement was revealed on the primary outcome in sub-acute stroke survivors following high-intensity aerobic exercise compared with low-intensity general exercise.
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spelling doaj.art-ff3de67584074e09983aae642ee911142022-12-21T19:16:24ZengSAGE PublishingJournal of Central Nervous System Disease1179-57352019-04-011110.1177/1179573519843493The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled TrialHanne Pallesen0Maria Bjerk1Asger Roer Pedersen2Jørgen Feldbæk Nielsen3Lars Evald4Hammel Neurorehabilitation Centre and University Research Clinic, RM, Aarhus University, Hammel, DenmarkOslo and Akershus University College of Applied Sciences, Oslo, NorwayHammel Neurorehabilitation Centre and University Research Clinic, RM, Aarhus University, Hammel, DenmarkHammel Neurorehabilitation Centre and University Research Clinic, RM, Aarhus University, Hammel, DenmarkHammel Neurorehabilitation Centre and University Research Clinic, RM, Aarhus University, Hammel, DenmarkBackground: Aerobic exercise is an effective treatment to improve aerobic capacity following stroke and might also improve cognitive impairments in sub-acute stroke survivors. The aim of the study was to assess the effect of high-intensity aerobic exercise on cognitive impairments in sub-acute stroke survivors. Methods: A pilot, randomised controlled trial on the effects of aerobic exercise on cognitive impairments of stroke patients in the sub-acute (1-3 months) phase was conducted. Thirty patients with moderate cognitive impairments (maximum score of 5 on at least two items on the cognitive subscales of the Functional Independence Measure [FIM]) were included in the study and randomly assigned to either the intervention group – performing high-intensity aerobic exercise (above 70% of maximum heart rate), or the control group – performing low-intensity aerobic exercise (below 60%). Patients in both groups exercised for 50 min twice a week for 4 weeks. Primary neuropsychological outcome: Trail Making Test B. Results: Thirty stroke patients completed the interventions. The results showed that the high-intensity group, compared with the low-intensity group, achieved significant improvements on Trail Making Test B, which assesses processing speed and divided attention ( P  = .04 after training and P  = .01 at follow-up). However, the significant improvements on Trail Making Test B might relate to a ceiling effect in the control group. Conclusions: This study does not provide evidence to support that aerobic exercise can improve cognition in stroke survivors, even though significant improvement was revealed on the primary outcome in sub-acute stroke survivors following high-intensity aerobic exercise compared with low-intensity general exercise.https://doi.org/10.1177/1179573519843493
spellingShingle Hanne Pallesen
Maria Bjerk
Asger Roer Pedersen
Jørgen Feldbæk Nielsen
Lars Evald
The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled Trial
Journal of Central Nervous System Disease
title The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled Trial
title_full The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled Trial
title_fullStr The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled Trial
title_full_unstemmed The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled Trial
title_short The Effects of High-Intensity Aerobic Exercise on Cognitive Performance After Stroke: A Pilot Randomised Controlled Trial
title_sort effects of high intensity aerobic exercise on cognitive performance after stroke a pilot randomised controlled trial
url https://doi.org/10.1177/1179573519843493
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