Asset Details
Do you wish to reserve the book?
Post‐exercise syncope: Wingate syncope test and visual‐cognitive function
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Post‐exercise syncope: Wingate syncope test and visual‐cognitive function
Do you wish to request the book?
Post‐exercise syncope: Wingate syncope test and visual‐cognitive function
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Post‐exercise syncope: Wingate syncope test and visual‐cognitive function
2016
Overview
Adequate cerebral perfusion is necessary to maintain consciousness in upright humans. Following maximal anaerobic exercise, cerebral perfusion can become compromised and result in syncope. It is unknown whether post‐exercise reductions in cerebral perfusion can lead to visual‐cognitive deficits prior to the onset of syncope, which would be of concern for emergency workers and warfighters, where critical decision making and intense physical activity are combined. Therefore, the purpose of this experiment was to determine if reductions in cerebral blood velocity, induced by maximal anaerobic exercise and head‐up tilt, result in visual‐cognitive deficits prior to the onset of syncope. Nineteen sedentary to recreationally active volunteers completed a symptom‐limited 60° head‐up tilt for 16 min before and up to 16 min after a 60 sec Wingate test. Blood velocity of the middle cerebral artery was measured using transcranial Doppler ultrasound and a visual decision‐reaction time test was assessed, with independent analysis of peripheral and central visual field responses. Cerebral blood velocity was 12.7 ± 4.0% lower (mean ± SE; P < 0.05) after exercise compared to pre‐exercise. This was associated with a 63 ± 29% increase (P < 0.05) in error rate for responses to cues provided to the peripheral visual field, without affecting central visual field error rates (P = 0.46) or decision‐reaction times for either visual field. These data suggest that the reduction in cerebral blood velocity following maximal anaerobic exercise contributes to visual‐cognitive deficits in the peripheral visual field without an apparent affect to the central visual field. We investigated whether standing upright after very intense exercise generates reductions in cerebral blood velocity of a sufficient magnitude that they result in reduced visual‐cognitive abilities. Our findings show that intense exercise, without proper cool‐down, can result in reduced cerebral blood velocity to the extent that visual‐cognitive deficits in the peripheral visual field are present.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc
Subject
/ Blood
/ Blood Flow Velocity - physiology
/ Cardiovascular Conditions, Disorders and Treatments
/ Cognitive and Behavioural Neuroscience
/ Exercise
/ Female
/ Humans
/ Male
/ Middle Cerebral Artery - physiopathology
/ Neurological Conditions, Disorders and Treatments
/ Orthostatic Intolerance - diagnosis
/ Orthostatic Intolerance - etiology
/ Orthostatic Intolerance - physiopathology
/ Post-Exercise Hypotension - diagnosis
/ Post-Exercise Hypotension - etiology
/ Post-Exercise Hypotension - physiopathology
/ Syncope
/ Ultrasonography, Doppler, Transcranial - methods
/ Velocity
/ Workers
