The effect of high and low exercise intensity periods on a simple memory recognition test

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Abstract

Purpose
The purpose of this study was to investigate the effect of variable intensities on a simple memory recognition task during exercise.
Methods
Twenty active participants took part in initial testing, a familiarization trial and then four 60-min cycling interventions in a randomized order. Interventions consisted of no exercise (control), constant exercise at 90% ventilatory threshold (constant) and two trials that initially mimicked the constant trial, but then included periods of high (~90% View the MathML sourceVO2peak) and low intensities (~50% View the MathML sourceVO2peak). Cardiorespiratory measures and capillary blood samples were taken throughout. A short tablet-based cognitive task was completed prior to and during (50 and 55 min into exercise) each intervention.
Results
The exercise conditions facilitated response time (p = 0.009), although the extent of this effect was not as strong in the variable exercise conditions (p = 0.011–0.089). High intensity exercise periods resulted in some cognitive regression back towards control trial performance. Elevations in cardiorespiratory measures and periods of hypocapnia could not explain changes in cognitive performance.
Conclusion
Changes in cognitive performance with variations in exercise intensity are likely to have implications for sport and occupational settings. The timing of cognitive tests to exercise intensity changes as well as use of short cognitive assessments will be important for future work.
Original languageEnglish
Pages (from-to)342-348
Number of pages7
JournalJournal of Sport and Health Science
Volume5
Issue number3
DOIs
Publication statusPublished - Sep 2016

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Hypocapnia
Exercise Test
Tablets
Reaction Time
Sports
Recognition (Psychology)

Cite this

@article{6925d21002824d749ab72e23f0118620,
title = "The effect of high and low exercise intensity periods on a simple memory recognition test",
abstract = "PurposeThe purpose of this study was to investigate the effect of variable intensities on a simple memory recognition task during exercise.MethodsTwenty active participants took part in initial testing, a familiarization trial and then four 60-min cycling interventions in a randomized order. Interventions consisted of no exercise (control), constant exercise at 90{\%} ventilatory threshold (constant) and two trials that initially mimicked the constant trial, but then included periods of high (~90{\%} View the MathML sourceVO2peak) and low intensities (~50{\%} View the MathML sourceVO2peak). Cardiorespiratory measures and capillary blood samples were taken throughout. A short tablet-based cognitive task was completed prior to and during (50 and 55 min into exercise) each intervention.ResultsThe exercise conditions facilitated response time (p = 0.009), although the extent of this effect was not as strong in the variable exercise conditions (p = 0.011–0.089). High intensity exercise periods resulted in some cognitive regression back towards control trial performance. Elevations in cardiorespiratory measures and periods of hypocapnia could not explain changes in cognitive performance.ConclusionChanges in cognitive performance with variations in exercise intensity are likely to have implications for sport and occupational settings. The timing of cognitive tests to exercise intensity changes as well as use of short cognitive assessments will be important for future work.",
keywords = "Acute, Cognitive, Cycling, Decision-making, Physical activity",
author = "Ben Rattray and Smee, {Disa J.}",
year = "2016",
month = "9",
doi = "10.1016/j.jshs.2015.01.005",
language = "English",
volume = "5",
pages = "342--348",
journal = "Journal of Sport and Health Science",
issn = "1674-6031",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - The effect of high and low exercise intensity periods on a simple memory recognition test

AU - Rattray, Ben

AU - Smee, Disa J.

PY - 2016/9

Y1 - 2016/9

N2 - PurposeThe purpose of this study was to investigate the effect of variable intensities on a simple memory recognition task during exercise.MethodsTwenty active participants took part in initial testing, a familiarization trial and then four 60-min cycling interventions in a randomized order. Interventions consisted of no exercise (control), constant exercise at 90% ventilatory threshold (constant) and two trials that initially mimicked the constant trial, but then included periods of high (~90% View the MathML sourceVO2peak) and low intensities (~50% View the MathML sourceVO2peak). Cardiorespiratory measures and capillary blood samples were taken throughout. A short tablet-based cognitive task was completed prior to and during (50 and 55 min into exercise) each intervention.ResultsThe exercise conditions facilitated response time (p = 0.009), although the extent of this effect was not as strong in the variable exercise conditions (p = 0.011–0.089). High intensity exercise periods resulted in some cognitive regression back towards control trial performance. Elevations in cardiorespiratory measures and periods of hypocapnia could not explain changes in cognitive performance.ConclusionChanges in cognitive performance with variations in exercise intensity are likely to have implications for sport and occupational settings. The timing of cognitive tests to exercise intensity changes as well as use of short cognitive assessments will be important for future work.

AB - PurposeThe purpose of this study was to investigate the effect of variable intensities on a simple memory recognition task during exercise.MethodsTwenty active participants took part in initial testing, a familiarization trial and then four 60-min cycling interventions in a randomized order. Interventions consisted of no exercise (control), constant exercise at 90% ventilatory threshold (constant) and two trials that initially mimicked the constant trial, but then included periods of high (~90% View the MathML sourceVO2peak) and low intensities (~50% View the MathML sourceVO2peak). Cardiorespiratory measures and capillary blood samples were taken throughout. A short tablet-based cognitive task was completed prior to and during (50 and 55 min into exercise) each intervention.ResultsThe exercise conditions facilitated response time (p = 0.009), although the extent of this effect was not as strong in the variable exercise conditions (p = 0.011–0.089). High intensity exercise periods resulted in some cognitive regression back towards control trial performance. Elevations in cardiorespiratory measures and periods of hypocapnia could not explain changes in cognitive performance.ConclusionChanges in cognitive performance with variations in exercise intensity are likely to have implications for sport and occupational settings. The timing of cognitive tests to exercise intensity changes as well as use of short cognitive assessments will be important for future work.

KW - Acute

KW - Cognitive

KW - Cycling

KW - Decision-making

KW - Physical activity

U2 - 10.1016/j.jshs.2015.01.005

DO - 10.1016/j.jshs.2015.01.005

M3 - Article

VL - 5

SP - 342

EP - 348

JO - Journal of Sport and Health Science

JF - Journal of Sport and Health Science

SN - 1674-6031

IS - 3

ER -