Influence of Different Types of Physical Fatigue on a Visual Detection Task

Fleury, Michelle; Bard, Chantal; Jobin, Jean; Carrière, Lise

doi:10.2466/pms.1981.53.3.723

Cited by 39 publications

(19 citation statements)

References 11 publications

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“…In fact, Hogervorst et al (1996) demonstrated a positive impact of IE on the subject cognitive performance, but it could be argued that their results could be caused by the expectancy of the subjects for a positive effect of exercise rather than on the intrinsic exercise effect. Whereas Grebot et al (2003) demonstrated that IE could increase the difficulty of recall shooting performance, Fleury et al (1981) could not detect any clear influence of IE on a letter-detection task.…”

Section: Discussionmentioning

confidence: 90%

Oxidative Stress Induced by Intense and Exhaustive Exercise Impairs Murine Cognitive Function

Rosa¹,

Takahashi²,

Aboulafia³

et al. 2007

Journal of Neurophysiology

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Rosa EF, Takahashi S, Aboulafia J, Nouailhetas VL, Oliveira MG. Oxidative stress induced by intense and exhaustive exercise impairs murine cognitive function. J Neurophysiol 98: 1820 -1826, 2007. First published July 11, 2007 doi:10.1152/jn.01158.2006. It has been shown that exercise is helpful against brain disorders. However, this may not be true for intense exercise (IE). Because it is easy to misadjust exercise intensity with physical condition, it is essential to know the effects of IE on cognitive process because it may have important consequences on people skills and work skills. We investigated the effects of IE on male C57Bl/6 mice, 3-mo-old, undergoing 10 days of intense and exhaustive running program on cognition and its possible relationship with brain oxidative stress. Cognition was evaluated by three different cognitive tests: passive avoidance task, contextual fear conditioning, and tone fear conditioning, performed 24 h after the last exercise session. Brain oxidative stress was evaluated by lipid peroxidation and protein oxidation. There was a remarkable memory reduction of exercised animals in comparison with the control group, associated with increase in the brain oxidative stress, with no alterations in shock sensitivity, locomotion and anxiety parameters. Concurrent vitamin C and E supplementation fully prevented the memory decrement induced by IE and partially recovered both the increased the brain lipid peroxidation and the protein oxidation. In conclusion, IE-induces a high index of brain oxidative stress and impairs memory in murine model that was prevented by vitamin C and E supplementation.

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Section: Discussionmentioning

confidence: 90%

Oxidative Stress Induced by Intense and Exhaustive Exercise Impairs Murine Cognitive Function

Rosa¹,

Takahashi²,

Aboulafia³

et al. 2007

Journal of Neurophysiology

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“…The lack of within-group differences in the experts certainly supports this notion. Second, Fleury and colleagues (Fleury, Bard, Jobin, & Carrière, 1981b) …”

Section: Discussionmentioning

confidence: 97%

Post‐exercise coincidence anticipation in expert and novice Gaelic games players: the effects of exercise intensity

Lyons

Al‐Nakeeb

Nevill

2008

European Journal of Sport Science

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Within the current scientific literature, there is a distinct lack of empirical data examining the effects of exercise intensity on\ud coincidence anticipation and, to date, no study has examined this in Gaelic games. Furthermore, many previous studies failed to consider fully sport specificity. The aims of this study were to examine the effect of moderate- and high-intensity\ud exercise on coincidence anticipation and to determine whether post-exercise changes in coincidence anticipation were the same in novice and expert Gaelic games players (hurlers).\ud Eleven expert and nine novice hurlers participated in this study. After familiarization, coincidence anticipation was\ud measured using the Bassin Anticipation Timer at rest, following moderate- and high-intensity exercise. Exercise intensities were set using an incremental running protocol until the participants reached steady-state 70% and 90% heart rate reserve.\ud To simulate hitting a ball, participants swung or ‘‘pulled’’ using a continuous swing at full speed with a standard hurley through a photoelectric beam as close to the actual arrival time of the stimulus at the target location as possible. Immediately following each exercise condition, participants performed 20 anticipation trials. All testing was randomized and\ud counterbalanced. Raw scores were transformed to three error scores constant error, absolute error, and log variable error. The effect of\ud exercise intensity on constant error, absolute error, and log variable error was analysed using separate 3 (exercise intensities) 20 (trials) 2 (levels of skill) repeated-measures analyses of variance. The results showed no between- or\ud within-group differences for constant error (P 0.05). For both absolute error and log variable error there were highly significant between-group differences (both PB0.01), which indicated that the expert hurlers at all exercise intensities\ud exhibited significantly better coincidence anticipation than novice players probably due to experience among other factors. Further within-group analyses showed no differences in the expert players’ performance across exercise intensities. However, within-group analyses on the novice players’ data showed a significant difference between performance at rest and\ud performance following moderate-intensity exercise. The results suggest that expert players are capable of maintaining coincidence anticipation performance across exercise intensities but the novice players performed optimally following moderate-intensity exercise

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“…For example typists, due to prolonged use of computers, experience more eye-related symptoms (27). These problems are prevalent in developed countries such as the US where more than 100 million people use computers on a daily basis and 50% of them experience eye-related problems (28). These problems include, eye strain, headaches, eye redness, dry eyes, burning eyes, weak vision, blurred vision, eye irritation, nervous tic, double vision, photophobia, nearsightedness, eye fatigue, light or glare sensitivity, watery eyes, contact lens discomfort, changes in color perception, etc.…”

Section: Discussionmentioning

confidence: 99%

Computer Vision Syndrome in Eleven to Eighteen-Year-Old Students in Qazvin

Khalaj¹,

Ebrahimi²,

Shojai³

et al. 2015

Biotech Health Sci

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Background: Prolonged use of computers can lead to complications such as eye strain, eye and head aches, double and blurred vision, tired eyes, irritation, burning and itching eyes, eye redness, light sensitivity, dry eyes, muscle strains, and other problems. Objectives: The aim of the present study was to evaluate visual problems and major symptoms, and their associations among computer users, aged between 11 and 18 years old, residing in the Qazvin city of Iran, during year 2010. Patients and Methods: This cross-sectional study was done on 642 secondary to pre university students who had referred to the eye clinic of Buali hospital of Qazvin during year 2013. A questionnaire consisting of demographic information and 26 questions on visual effects of the computer was used to gather information. Participants answered all questions and then underwent complete eye examinations and in some cases cycloplegic refraction. Visual acuity (VA) was measured with a logMAR in six meters. Refraction errors were determined using an auto refractometer (Potece and Heine retinoscope). The collected data was then analyzed using the SPSS statistical software. Results:The results of this study indicated that 63.86% of the subjects had refractive errors. Refractive errors were significantly different in children of different genders (P < 0.05). The most common complaints associated with the continuous use of computers were eyestrain, eye pain, eye redness, headache, and blurred vision. The most prevalent (81.8%) eye-related problem in computer users was eyestrain and the least prevalent was dry eyes (7.84%). In order to reduce computer related problems 54.2% of the participants suggested taking enough rest, 37.9% recommended use of computers only for necessary tasks, while 24.4% and 19.1% suggested the use of monitor shields and proper working distance, respectively. Conclusions: Our findings revealed that using computers for prolonged periods of time can lead to eye-related problems such as eyestrain, headaches, weak and tired eyes, blurred and double vision, weak vision, burning itching and watery eyes, etc. To correct and reduce these problems the following precautions may be helpful, using computer shields (anti-reflex glasses), proper computer workplace illumination, enough rest after working with computers, appropriate viewing distances during computer work, placing computers far from bright objects and adjusting a line of vision with the top of the monitor.

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Influence of Different Types of Physical Fatigue on a Visual Detection Task

Cited by 39 publications

References 11 publications

Oxidative Stress Induced by Intense and Exhaustive Exercise Impairs Murine Cognitive Function

Oxidative Stress Induced by Intense and Exhaustive Exercise Impairs Murine Cognitive Function

Post‐exercise coincidence anticipation in expert and novice Gaelic games players: the effects of exercise intensity

Computer Vision Syndrome in Eleven to Eighteen-Year-Old Students in Qazvin

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