The Effect of Physical Fatigue on Short-term Memory (original) (raw)
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Naturally-occurring fatigue and cardiovascular response to a simple memory challenge
International journal of psychophysiology : official journal of the International Organization of Psychophysiology, 2017
Participants first completed a state affect checklist that included a fatigue (energy-tiredness) index and a measure of mental sharpness. They then were presented a simple memory challenge. In the first minute of the two-minute work period, heart rate responses (1) rose with values on the fatigue index, and (2) fell with values on the measure of mental sharpness. In the second minute of the work period, the responses were unrelated to fatigue index and mental sharpness values. Follow-up analysis indicated mental sharpness mediation of fatigue influence on heart rate in Minute 1. First minute findings add substantively to the body of evidence supporting recent suggestions that fatigue can lead people to try harder and experience stronger cardiovascular responses when confronted with simple challenges. They also support the suggestion that fatigue might exert its influence on cardiovascular responses to a mental challenge by diminishing cognitive clarity, that is, by obscuring thought...
The effects of different protocols of physical exercise and rest on long-term memory
2019
Objectives Many studies have looked at the effects of physical exercise on long-term memory. However, to date, no study has compared the effect of different intensities and protocols of physical exercise and different rest conditions on long-term memory. Methods In three studies (N=59) we measured the extent that physical exercise (in its varying intensities) and wakeful rest (active-rest; in which participants were cognitively engaged while seated and passive-rest; no cognitive engagement while seated) could influence long-term memory. Across all three studies, nearly identical procedures were employed, using the same old/new recognition memory test in order to establish the most effective protocol for cognitive enhancement. In Study 1, the effects of continuous moderate intensity exercise, uninterrupted wakeful rest (passive) and rest with an engagement task (active) were explored. In Study 2, continuous moderate intensity exercise was compared to high-intensity interval training ...
The Effect of Single Bout of Acute Exercise on Working Memory Performance
Birat Journal of Health Sciences, 2018
Introduction: Working memory is a kind of short term memory important for reasoning and guiding decision-making and behavioral process.Objective: The goal of the present research was to study the outcome of single bout of acute moderate-intensity exercise on working memory.Methodology: Twenty two male subjects were asked to perform working memory task by 2n back task in baseline resting, immediately after exercise and after five minute of exercise session. 3 minute step test procedure was used as a moderate intensity exercise intervention.Results: The percentage correctness of 2n back task of working memory was found to be 64.36% for baseline resting condition, 78.01 % for immediately after 3-minute step test and 80.70% for 5 minute after the exercise. In both exercise session (i.e. immediately after exercise and after 5 minute of exercise), significant improvement (p value <0.05) in working memory was seen as compared to the baseline resting session while no such significant ben...
Exercise and Its Relation to Students’ Working Memory- a Preliminary Study
2020
The practice of cardiovascular exercise triggers a cascade of neurobiological mechanisms that enhancing human memory processing. The objective of this study was to understand the relationship of acute, moderate-intensity exercise to working memory (WM) performance by using N-back task as a performance measure. In a within-participants design, UiTM students aged between 19 to 24 years old, females (n = 25) performed a N-back task to assess working memory before and 5-minutes immediately after the following interventions: 1) a rest-cognition intervention, in which they performed a cognitive task without exercising; 2) an exercise-cognition intervention, in which they exercised performed a cognitive task 5-minutes immediately after the task. 8 subjects had increment in N-back load compared to before exercise,11 had similar N-back load performance. The exercise-only intervention resulted in increment pattern of hit rate and decreased reaction times, suggesting that simple aerobic exerc...
Mental fatigue impairs physical performance in humans
Journal of Applied …, 2009
Marcora SM, Staiano W, Manning V. Mental fatigue impairs physical performance in humans. tigue is a psychobiological state caused by prolonged periods of demanding cognitive activity. Although the impact of mental fatigue on cognitive and skilled performance is well known, its effect on physical performance has not been thoroughly investigated. In this randomized crossover study, 16 subjects cycled to exhaustion at 80% of their peak power output after 90 min of a demanding cognitive task (mental fatigue) or 90 min of watching emotionally neutral documentaries (control). After experimental treatment, a mood questionnaire revealed a state of mental fatigue (P ϭ 0.005) that significantly reduced time to exhaustion (640 Ϯ 316 s) compared with the control condition (754 Ϯ 339 s) (P ϭ 0.003). This negative effect was not mediated by cardiorespiratory and musculoenergetic factors as physiological responses to intense exercise remained largely unaffected. Self-reported success and intrinsic motivation related to the physical task were also unaffected by prior cognitive activity. However, mentally fatigued subjects rated perception of effort during exercise to be significantly higher compared with the control condition (P ϭ 0.007). As ratings of perceived exertion increased similarly over time in both conditions (P Ͻ 0.001), mentally fatigued subjects reached their maximal level of perceived exertion and disengaged from the physical task earlier than in the control condition. In conclusion, our study provides experimental evidence that mental fatigue limits exercise tolerance in humans through higher perception of effort rather than cardiorespiratory and musculoenergetic mechanisms. Future research in this area should investigate the common neurocognitive resources shared by physical and mental activity.
Physical and cognitive consequences of fatigue: A review
Journal of Advanced Research, 2015
Fatigue is a common worrying complaint among people performing physical activities on the basis of training or rehabilitation. An enormous amount of research articles have been published on the topic of fatigue and its effect on physical and physiological functions. The goal of this review is to focus on the effect of fatigue on muscle activity, proprioception, and cognitive functions and to summarize the results to understand the influence of fatigue on these functions. Attaining this goal provides evidence and guidance when dealing with patients and/or healthy individuals in performing maximal or submaximal exercises.
The effect of high and low exercise intensity periods on a simple memory recognition test
Journal of Sport and Health Science, 2015
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 (w90% VO 2peak ) and low intensities (w50% VO 2peak ). 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 ¼ 0.009), although the extent of this effect was not as strong in the variable exercise conditions ( p ¼ 0.011e0.089). 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.
The aim of this research was to investigate the implicit and explicit cognitive processes during and after the cessation of the aerobic acute exercises with different intensities in individuals with different working memory capacity (WMC) based on the transient hypofrontality thesis. Participants consist of 60 males (30 high WMC and 30 low WMC) with moderate level of physical fitness (age: 20.82 ± 2.2; VO2max = 49.33 ± 6 ml. kg. min) by different cycling intensities (80-90%, 60-70% and 40-50% maximum heart rate) and WMC were divided randomly to six groups of 10 people . Implicit (choice reaction time) and explicit (stroop) cognitive tests were administered in four different times before, during, 1 and 15 minute after the cessation of the exercise. Results of ANOVA through repeated measures and between groups factor revealed the main effect of time was significant for the implicit cognitive process (p<0.05). Main effects of the time and group interactions were significant in explicit cognitive process (p<0.05). Based on the Bonferroni correction, there was a significant difference between high and low intensity groups (more interference in high intensity group) (p<0.05) but there was no difference between the individuals with high and low WMC in the same intensities. The results of this research showed that the transient hypofrontality occurs during high intensity aerobic acute exercise and WMC has no effects on the emergence of this temporary change.
The Effects of Mental Fatigue on Physical Performance: A Systematic Review
Sports medicine (Auckland, N.Z.), 2017
Mental fatigue is a psychobiological state caused by prolonged periods of demanding cognitive activity. It has recently been suggested that mental fatigue can affect physical performance. Our objective was to evaluate the literature on impairment of physical performance due to mental fatigue and to create an overview of the potential factors underlying this effect. Two electronic databases, PubMed and Web of Science (until 28 April 2016), were searched for studies designed to test whether mental fatigue influenced performance of a physical task or influenced physiological and/or perceptual responses during the physical task. Studies using short (<30 min) self-regulatory depletion tasks were excluded from the review. A total of 11 articles were included, of which six were of strong and five of moderate quality. The general finding was a decline in endurance performance (decreased time to exhaustion and self-selected power output/velocity or increased completion time) associated wi...