scholarly journals No Effects of Mental Fatigue and Cerebral Stimulation on Physical Performance of Master Swimmers

2021 ◽  
Vol 12 ◽  
Author(s):  
Eduardo Macedo Penna ◽  
Edson Filho ◽  
Bruno Teobaldo Campos ◽  
Renato Melo Ferreira ◽  
Juliana Otoni Parma ◽  
...  
Keyword(s):  
Physical Performance ◽  
Brain Stimulation ◽  
Perceived Exertion ◽  
Cognitive Task ◽  
Temporal Cortex ◽  
Mental Fatigue ◽  
Cognitive Effort ◽  
Master Athletes ◽  
Color Test ◽  
Experimental Conditions

Background: Mental fatigue is a psychobiological state caused by extended periods of cognitive effort, and evidence suggests that mentally fatigued athletes present impaired physical performance. Different ergogenic aids have been proposed to counteract the deleterious effects of mental fatigue, but whether brain stimulation can counteract mental fatigue is still unknown. This scenario is even more obscure considering the effects of these interventions (mental fatigue induction and brain stimulation) in a very experienced population consisting of master athletes.Method: Ten master swimmers (30 ± 6 years old and 14 ± 8 years of experience) participated in the study. They underwent four experimental conditions before an 800-m freestyle test: mental fatigue with brain stimulation; mental fatigue without brain stimulation; absence of mental fatigue with brain stimulation; and absence of mental fatigue and no brain stimulation. Mental fatigue was induced by a cognitively demanding Stroop Color Test, whereas stimulation was applied on the temporal cortex. After that, the athletes swan 800 m as fast as possible and provided their ratings of perceived exertion (RPE) every 200 m.Results: Mental fatigue was effectively induced, as evidenced by a greater fatigue perception and more errors in the last blocks of the cognitive task. Mental fatigue induction did not influence performance (time to complete the swimming trial) and RPE. Similarly, brain stimulation failed to change these two parameters, regardless of mental fatigue induction.Conclusion: The prolonged physical performance of experienced master athletes is not influenced, under the present conditions, by mental fatigue induction, cerebral stimulation, and their association.

scholarly journals Mental fatigue impairs physical performance in humans

2009 ◽  
Vol 106 (3) ◽  
pp. 857-864 ◽  
Author(s):  
Samuele M. Marcora ◽  
Walter Staiano ◽  
Victoria Manning
Keyword(s):  
Physical Performance ◽  
Perceived Exertion ◽  
Cognitive Task ◽  
Cognitive Activity ◽  
Mental Fatigue ◽  
Peak Power Output ◽  
Time To Exhaustion ◽  
Perception Of Effort ◽  
Physical Task ◽  
The Impact

Mental fatigue 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 = 0.005) that significantly reduced time to exhaustion (640 ± 316 s) compared with the control condition (754 ± 339 s) ( P = 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 = 0.007). As ratings of perceived exertion increased similarly over time in both conditions ( P < 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.

Mental Fatigue: Impairment of Technical Performance in Small-Sided Soccer Games

2016 ◽  
Vol 11 (8) ◽  
pp. 1100-1105 ◽  
Author(s):  
Oliver O. Badin ◽  
Mitchell R. Smith ◽  
Daniele Conte ◽  
Aaron J. Coutts
Keyword(s):  
Physical Performance ◽  
Stroop Task ◽  
Perceived Exertion ◽  
Mental Fatigue ◽  
Subjective Ratings ◽  
Performance Variables ◽  
Technical Performance ◽  
Video Recordings ◽  
Before And After ◽  
Computer Based

Purpose:To assess the effects of mental fatigue on physical and technical performance in small-sided soccer games. Methods:Twenty soccer players (age 17.8 ± 1.0 y, height 179 ± 5 cm, body mass 72.4 ± 6.8 kg, playing experience 8.3 ± 1.4 y) from an Australian National Premier League soccer club volunteered to participate in this randomized crossover investigation. Participants played 15-min 5-vs-5 small-sided games (SSGs) without goalkeepers on 2 occasions separated by 1 wk. Before the SSG, 1 team watched a 30-min emotionally neutral documentary (control), while the other performed 30 min of a computer-based Stroop task (mental fatigue). Subjective ratings of mental and physical fatigue were recorded before and after treatment and after the SSG. Motivation was assessed before treatment and SSG; mental effort was assessed after treatment and SSG. Player activity profiles and heart rate (HR) were measured throughout the SSG, whereas ratings of perceived exertion (RPEs) were recorded before the SSG and immediately after each half. Video recordings of the SSG allowed for notational analysis of technical variables. Results:Subjective ratings of mental fatigue and effort were higher after the Stroop task, whereas motivation for the upcoming SSG was similar between conditions. HR during the SSG was possibly higher in the control condition, whereas RPE was likely higher in the mental-fatigue condition. Mental fatigue had an unclear effect on most physical-performance variables but impaired most technical-performance variables. Conclusions:Mental fatigue impairs technical but not physical performance in small-sided soccer games.

scholarly journals Prior Acute Mental Exertion in Exercise and Sport

2016 ◽  
Vol 12 (1) ◽  
pp. 94-107 ◽  
Author(s):  
Fernando Lopes e Silva-Júnior ◽  
Patrick Emanuel ◽  
Jordan Sousa ◽  
Matheus Silva ◽  
Silmar Teixeira ◽  
...  
Keyword(s):  
Physical Performance ◽  
Cognitive Task ◽  
Cognitive Activity ◽  
Mental Fatigue ◽  
Construction Workers ◽  
Psychological Responses ◽  
Psychophysiological Responses ◽  
Psychophysiological State ◽  
And Performance ◽  
Mental Exertion

Introduction:Mental exertion is a psychophysiological state caused by sustained and prolonged cognitive activity. The understanding of the possible effects of acute mental exertion on physical performance, and their physiological and psychological responses are of great importance for the performance of different occupations, such as military, construction workers, athletes (professional or recreational) or simply practicing regular exercise, since these occupations often combine physical and mental tasks while performing their activities. However, the effects of implementation of a cognitive task on responses to aerobic exercise and sports are poorly understood. Our narrative review aims to provide information on the current research related to the effects of prior acute mental fatigue on physical performance and their physiological and psychological responses associated with exercise and sports.Methods:The literature search was conducted using the databases PubMed, ISI Web of Knowledge and PsycInfo using the following terms and their combinations: “mental exertion”, “mental fatigue”, “mental fatigue and performance”, “mental exertion and sports” “mental exertion and exercise”.Results:We concluded that prior acute mental exertion affects effectively the physiological and psychophysiological responses during the cognitive task, and performance in exercise.Conclusion:Additional studies involving prior acute mental exertion, exercise/sports and physical performance still need to be carried out in order to analyze the physiological, psychophysiological and neurophysiological responses subsequently to acute mental exertion in order to identify cardiovascular factors, psychological, neuropsychological associates.

Mental Fatigue Reduces Training Volume in Resistance Exercise: A Cross-Over and Randomized Study

2020 ◽  
pp. 003151252095893
Author(s):  
Victor Sabino de Queiros ◽  
Matheus Dantas ◽  
Leonardo de Sousa Fortes ◽  
Luiz Felipe da Silva ◽  
Gilson Mendes da Silva ◽  
...  
Keyword(s):  
Resistance Exercise ◽  
Perceived Exertion ◽  
Cognitive Task ◽  
Randomized Study ◽  
Mental Fatigue ◽  
Training Volume ◽  
Training Experience ◽  
Back Squat ◽  
Study Participants ◽  
Failure Reporting

The present study aimed to determine the effect of mental fatigue (MF) on total training volume (TTV; number of repetitions x number of sets x load) and on ratings of perceived exertion (RPE; Borg, 1982 ) in the half-back squat exercise (HBSE). Nine male subjects ( M age = 22.6 years, SD =  2.3; M height = 172.3 cm , SD =  6.8; M weight = 76.2 kg , SD =  9.8; M years of resistance training experience = 4.1, SD = 2.3 years) recruited from a university population were study participants in this participant-blind cross-over and randomized study. Participants underwent either the Stroop task – a highly demanding cognitive task (CT) – or a control condition (CON) in which they viewed a documentary exhibition for 30 minutes. Perception of MF and motivation were assessed after treatments using a visual analog scale of 100 mm. Participants then engaged in a countermovement jump (CMJ) test and three sets of HBSE until they reached momentary concentric failure, reporting RPE at the end of each exercise set. Following the CT, participants showed a significantly increased self-perception of MF in relation to the CON condition ( p = 0.01; d = 1.2), but this did not affect their motivation to engage in subsequent tests ( p = 0.99; d = 0.006). Neither the CMJ performances nor the RPE were statistically different between CT and CON conditions ( p = 0.33; d = 0.09 and p = 0.20 ; η2 = 0.20, respectively). TTV was significantly lower in the CT relative to the CON experimental condition (Δ = −15.8%; p = 0.04; η2 = 0.48). Prolonged involvement in a CT was associated with reduced volume on a resistance exercise, though this effect was not associated with changes in CMJ performance or motivation to exercise.

Effects of 4-week small-sided games vs. high-intensity interval training with changes of direction in female collegiate basketball players

2021 ◽  
pp. 174795412110327
Author(s):  
Jinshu Zeng ◽  
Jing Xu ◽  
Yuanhong Xu ◽  
Wu Zhou ◽  
Fei Xu
Keyword(s):  
Physical Performance ◽  
High Intensity ◽  
Perceived Exertion ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Basketball Players ◽  
Collegiate Basketball ◽  
High Intensity Interval ◽  
And Control ◽  
Movement Test

The aim of the study was to investigate the effects of 4-week small-sided games (SSG) and high-intensity interval training with changes of direction (HIT-COD) on physical performance and specific technical skills in female collegiate basketball players. Nineteen players were divided into SSG (n = 9) and HIT-COD (n = 10) groups, that performed either SSG or HIT-COD three times per week for 4 weeks during the pre-season. Players’ heart rate (HR) and perceived exertion responses (RPE) were assessed during the intervention. Before and after the intervention period, performances were assessed with 30-15 intermittent fitness test (30-15IFT), repeated sprint ability (RSA) test, modified agility T-test (MAT), countermovement jump (CMJ), 20-m sprint, shooting accuracy test, 1 min shooting test, passing test, defensive movement test and control dribble test. Both training interventions led to similar physiological and perceived exertion responses, showing no significant differences in HR ( P = .49, d = 0.2) and RPE ( P = .77, d = 0.1) between groups. Significant improvements were observed in 30-15IFT (SSG: 4.1%, d = 1.5; HIT-COD: 4.2%, d = 1.7), RSAmean (SSG: −2.2%, d = 1.0; HIT-COD: −1.9%, d = 1.0), RSAbest (SSG: −2.0%, d = 0.9; HIT-COD: −2.1%, d = 1.1), MAT (SSG: −7.2%, d = 1.7; HIT-COD: 5.7%, d = 1.5), defensive movement test (SSG: −5.1%, d = 2.1; HIT-COD: −5.8%, d = 1.8) and control dribble test (SSG: −3.4%, d = 1.0; HIT-COD: −2.6%, d = 1.0). The only significant group × time interaction was found ( P = .032, [Formula: see text] = 0.24), with SSG improving 1 min shooting (22.4%, d = 1.0) and HIT-COD performing slightly worse (−2.6%, d = 0.1) after a 4-week intervention. The current study suggests that using SSG is more effective than HIT-COD for female collegiate basketball players in pre-season, since SSG improves physical performance and basketball-specific movements as well as shooting abilities after a 4-week intervention.

scholarly journals Evidence for verbal memory enhancement with electrical brain stimulation in the lateral temporal cortex

Brain ◽  
2018 ◽  
Vol 141 (4) ◽  
pp. 971-978 ◽  
Author(s):  
Michal T Kucewicz ◽  
Brent M Berry ◽  
Laura R Miller ◽  
Fatemeh Khadjevand ◽  
Youssef Ezzyat ◽  
...  
Keyword(s):  
Brain Stimulation ◽  
Verbal Memory ◽  
Temporal Cortex ◽  
Electrical Brain Stimulation ◽  
Memory Enhancement

scholarly journals To Focus or Not to Focus: Is Attention on the Core Components of Action Beneficial for Cycling Performance?

2015 ◽  
Vol 29 (2) ◽  
pp. 110-119 ◽  
Author(s):  
Maurizio Bertollo ◽  
Selenia di Fronso ◽  
Edson Filho ◽  
Vito Lamberti ◽  
Patrizio Ripari ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Attentional Focus ◽  
Task Type ◽  
Repeated Measure ◽  
Time To Exhaustion ◽  
Experimental Conditions ◽  
Core Components ◽  
Type 3

We conducted a counterbalanced repeated measure trial to investigate the effect of different internal and external associative strategies on endurance performance. Seventeen college-aged students were randomly assigned to three experimental conditions to test the notion that different attention-performance types (optimal Type 1, functional Type 2, and dysfunctional Type 3) would influence endurance time on a cycling task. Specifically, Type 1 represented an effortless and automatic, “flow-feeling” attentional mode. Type 2 referred to an associative focus directed at core components of the task. Type 3 represented an attentional focus directed at irrelevant components of the task. Participants completed three time-to-exhaustion-tests while reporting their perceived exertion and affective states (arousal and hedonic tone). Results revealed that Type 1 and Type 2 attentional strategies, compared with Type 3 strategy, exerted functional effects on performance, whereas a Type 3 strategy was linked to lower performance, and lower levels of arousal and pleasantness. Applied implications are discussed.

Perceived Difficulty and Motivated Cognitive Effort in a Computer-Simulated Forest Firefighting Task

1994 ◽  
Vol 79 (1) ◽  
pp. 115-127 ◽  
Author(s):  
Mary M. Omodei ◽  
Alexander J. Wearing
Keyword(s):  
Cognitive Task ◽  
Cognitive Effort ◽  
Expectancy Value ◽  
Psychological Phenomena ◽  
Significant Relationships ◽  
Perceived Difficulty ◽  
Research Designs

Two studies ( ns 28 and 55) were conducted to investigate the extent to which proposed relationships between perceived difficulty and motivated cognitive effort generalise to realistic, complex, ill-defined, ongoing situations. A computerised microworld generator, Fire Chief, was used to create an appropriate cognitive task. Using complementary research designs, no significant relationships were obtained between either perceived difficulty or proximity to preferred difficulty and on-task motivated cognitive effort assessed by self-referent importance, intended effort, and subjectively felt arousal. The implications of these findings for expectancy-value approaches to motivation are discussed. Attention is drawn to the extent to which the two studies illustrate the use of the Fire Chief microworld generator for the investigation of psychological phenomena.

Expected Task Duration and Perceived Effort: An Attributional Analysis

1980 ◽  
Vol 2 (3) ◽  
pp. 227-236 ◽  
Author(s):  
Walter J. Rejeski ◽  
Paul M. Ribisl
Keyword(s):  
Perceived Exertion ◽  
Mental Fatigue ◽  
Treadmill Running ◽  
Ratings Of Perceived Exertion ◽  
Heart Rates ◽  
Task Duration ◽  
Perceived Effort ◽  
Attributional Analysis ◽  
Male Subjects

The purpose of this study was to examine the effects of anticipated task duration on ratings of perceived exertion during treadmill running. Male subjects.(N = 15) completed two separate runs on a motor-driven treadmill at 85% V02 max. During one trial, subjects ran for a period of 20 minutes, while for a second trial, subjects were led to believe that they would be running for 30 minutes. In each case, the trials were terminated at the 20-minute mark. Ratings of perceived exertion, heart rates, respiratory rates, and ventilatory minute volumes were collected across each trial. Results supported the supposition that the anticipation of continued performance mediated ratings of effort expenditure. This effect was obtained only during moderate work levels and was in contrast to research examining mental fatigue.

Relationship between the level of mental fatigue induced by a prolonged cognitive task and the degree of balance disturbance

2021 ◽  
Author(s):  
Frédéric Noé ◽  
Betty Hachard ◽  
Hadrien Ceyte ◽  
Noëlle Bru ◽  
Thierry Paillard
Keyword(s):  
Cognitive Task ◽  
Mental Fatigue
Sign in / Sign up

Export Citation Format

Share Document