Influence Of Mental Fatigue Induced By Screen Exposure On Intuitive Decision-Making Of Sports

Objective: Screen exposure refers to the activity of using electronic products with screens,such as smartphones,tablets,laptops or desktops,game consoles,televisions,etc.Mental fatigue is a psychological and biological state characterized by fatigue and exhaustion after long-term cognitive activity.Decision Making is the ability of athletes to perceive information from their surroundings,interpret it,and ultimately choose appropriate responses based on this information.Some high mental expenditure activities(such as screen exposure)carried out by athletes before the competition can cause mental fatigue,leading to longer reaction time,decreased reaction accuracy,and ultimately affecting sports decision-making during the competition.Therefore,this study uses screen exposure as an induction method for mental fatigue,exploring its impact on intuitive decision-making in sports at different times and types,with the aim of providing theoretical basis and practical suggestions for athletes on how to effectively control screen exposure and prepare for the competition.Methods: Using an intra subject experimental design,20 basketball second level athletes from Shanghai Institute of Physical Education were selected to undergo 7mental fatigue induction sessions,with each induction lasting one week;The study was divided into two experiments.Experiment 1 was conducted in the first three weeks,using 30 minutes of basketball video watching,45 minutes of basketball video watching,and 60 minutes of basketball video watching to induce mental fatigue in the participants;Experiment 2 was conducted in the following four weeks,using 45 minute Stroop tasks,45 minute electronic games,45 minute social media software,and 45 minute basketball videos to induce mental fatigue in participants;Use the Stanford sleepiness scale to measure the subjective assessment of mental fatigue among participants;Using the Basketball Intuitive Decision Testing System to measure the accuracy and reaction time of participants’ intuitive decision-making in sports;The data are presented in the form of mean and standard deviation(SD);In Experiment 1,paired sample t-tests were used to compare the differences in mental fatigue before and after exposure to different long screens(30,45,and 60 minutes)and the differences in motor intuitive decision-making before and after exposure.Univariate analysis of variance was used to compare the differences in motor intuitive decision-making after exposure to long screens at different times;In Experiment 2,paired sample t-tests were used to compare the differences in mental fatigue and motor intuitive decision-making before and after different types of screen exposure(video viewing,electronic games,social media,Stroop tasks).Univariate analysis of variance was used to compare the differences in motor intuitive decision-making after different types of screen exposure;Select P<0.05 as the significance level.Results:(1)The data from Experiment 1 showed that there was no significant difference in the accuracy of intuitive decision-making among participants after watching a 30 minute video(t=0.188,P>0.05),and the difference in intuitive decision-making response time was not significant(t=-0.124,P>0.05);After watching the 45 minute video,there was a significant difference in the accuracy of participants’ intuitive decision-making(t=2.570,P<0.05),and there was a significant difference in the reaction time of intuitive decision-making(t=-3.636,P<0.01).(2)The data from Experiment 2 showed that there was a significant difference(P<0.01)in the accuracy of intuitive decision-making among participants after 45 minutes of video watching,45 minutes of social media,45 minutes of electronic games,and 45 minutes of Stroop task,while there was no significant difference(P>0.05)in the reaction time of intuitive decision-making among participants;Multiple comparison data showed a significant difference in the accuracy of intuitive decision-making after watching videos compared to the accuracy of intuitive decision-making after the Stroop task(P<0.01);There is a significant difference in the accuracy of intuitive decision-making after social media compared to the accuracy of intuitive decision-making after the Stroop task(P<0.01);The difference in the accuracy of intuitive decision-making after electronic games and the accuracy of intuitive decision-making after the Stroop task is not significant(P>0.05).The four ways of inducing mental fatigue have a descending order of impact on intuitive decision-making in sports: 45 minutes of video watching<45 minutes of social media<45 minutes of video games<45 minutes of Stroop tasks.Conclusion: Watching a 30 minute video can cause mental fatigue in athletes,while watching a 45 minute video can have a negative impact on the accuracy and reaction time of athletes’ intuitive decision-making,with accuracy being more affected than reaction time.45 minutes of video watching,social media,electronic games,and Stroop tasks can all cause mental fatigue among athletes,which can have a negative impact on intuitive decision-making in sports;Compared to video watching and social media,electronic games have a greater negative impact on athletes’ intuitive decision-making in sports.