scholarly journals The Effects of an Energy Drink on Psychomotor Vigilance in Trained Individuals

2019 ◽  
Vol 4 (3) ◽  
pp. 47 ◽  
Author(s):  
Antonio ◽  
Kenyon ◽  
Horn ◽  
Jiannine ◽  
Carson ◽  
...  
Keyword(s):  
Reaction Time ◽  
Fixed Time ◽  
Energy Drink ◽  
Time Frame ◽  
Caffeine Intake ◽  
Test Reaction ◽  
Double Blind ◽  
Psychomotor Vigilance Test ◽  
Vigilance Test ◽  
Psychomotor Vigilance

The psychomotor vigilance test (PVT) measures one’s behavioral alertness. It is a visual test that involves measuring the speed at which a person reacts to visual stimuli over a fixed time frame (e.g., 5 min). The purpose of this study was to assess the effects of an energy drink on psychomotor vigilance as well as a simple measure of muscular endurance (i.e., push-ups). A total of 20 exercise-trained men (n = 11) and women (n = 9) (mean SD: age 32 7 years; height 169 10 cm; weight; 74.5 14.5 kg; percent body fat 20.3 6.2%; years of training 14 9; daily caffeine intake 463 510 mg) volunteered for this randomized, double-blind, placebo-controlled, crossover trial. In a randomized counterbalanced order, they consumed either the energy drink (ED) (product: BANG®, Weston Florida) or a similar tasting placebo drink (PL). In the second visit after a 1-week washout period, they consumed the alternate drink. A full 30 minutes post-consumption, they performed the following tests in this order: a 5-minute psychomotor vigilance test, three sets of push-ups, followed once more by a 5-minute psychomotor vigilance test. Reaction time was recorded. For the psychomotor vigilance test, lapses, false starts and efficiency score are also assessed. There were no differences between groups for the number of push-ups that were performed or the number of false starts during the psychomotor vigilance test. However, the ED treatment resulted in a significantly lower (i.e., faster) psychomotor vigilance mean reaction time compared to the PL (p = 0.0220) (ED 473.8 42.0 milliseconds, PL 482.4 54.0 milliseconds). There was a trend for the ED to lower the number of lapses (i.e., reaction time > 500 milliseconds) (p = 0.0608). The acute consumption of a commercially available ED produced a significant improvement in psychomotor vigilance in exercise-trained men and women.

scholarly journals Multiple Sclerosis Fatigue is Associated with Reduced Psychomotor Vigilance

2012 ◽  
Vol 39 (2) ◽  
pp. 180-184 ◽  
Author(s):  
D. Rotstein ◽  
P. O'Connor ◽  
L. Lee ◽  
B. J. Murray
Keyword(s):  
Multiple Sclerosis ◽  
Reaction Time ◽  
Test Performance ◽  
Assessment Tool ◽  
Objective Measure ◽  
Poor Performance ◽  
Psychomotor Vigilance Test ◽  
Academic Hospitals ◽  
Vigilance Test ◽  
Psychomotor Vigilance

Background:Fatigue is common and disabling in multiple sclerosis, yet its physiologic substrates remain poorly defined. The aim of this study was to determine the relationship between fatigue and an objective measure of alertness in MS patients.Methods:This study enrolled 49 consecutive MS clinic patients at two academic hospitals in Toronto. Alertness was assessed with the psychomotor vigilance test (PVT), a ten-minute reaction-time test that measures attention and is sensitive to sleep loss. Patients with visual impairment or arm weakness were excluded. Validated tools were used to assess fatigue, disability, mood, and pain.Results:The average age was 43; 65% were women. Median EDSS was 2.0 (range 0-7.5). Fifty-five percent reported a high impact of fatigue on their lives. Psychomotor vigilance test performance was worse than in an age- and sex-matched population, with a mean reaction time of 315 msecs and 3.98 lapses >500 msec (p<0.001). In a multiple regression analysis, fatigue was the most significantly correlated factor with mean PVT reaction time (p<0.05), and disability was also significantly correlated (p<0.01). Mood and pain did not correlate with the PVT. Eighteen (37%) reported often experiencing restlessness in their legs at night.Conclusion:Subjective fatigue and disability were associated with poor performance on alertness testing in MS patients. This research highlights a potential role for psychomotor vigilance testing in providing a standardized assessment tool for an important aspect of MS-related fatigue.

scholarly journals 0170 Trial-to-Trial inconsistency in Reaction Time on the Psychomotor Vigilance Test Alters Self-Reported Sleepiness

SLEEP ◽  
2019 ◽  
Vol 42 (Supplement_1) ◽  
pp. A70-A70
Author(s):  
Spencer A Nielson ◽  
Spencer R Henry ◽  
Daniel B Kay
Keyword(s):  
Reaction Time ◽  
Psychomotor Vigilance Test ◽  
Vigilance Test ◽  
Psychomotor Vigilance

scholarly journals Evaluasi Performansi dan Tingkat Kelelahan dalam Upaya Optimisasi Capaian Pembelajaran Sistem Praktikum di Perguruan Tinggi X

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Asterina Febrianti ◽  
Lauditta Irianti ◽  
Aldila Hasanah
Keyword(s):  
Reaction Time ◽  
Visual Analog Scale ◽  
Learning Process ◽  
Mental Workload ◽  
Analog Scale ◽  
Psychomotor Vigilance Test ◽  
Independent Task ◽  
Vigilance Test ◽  
Performance Rate ◽  
Psychomotor Vigilance

ABSTRAKPraktikum merupakan sebuah proses pengamatan, percobaan, dan pengujian terhadap materi mata kuliah yang didapatkan. Praktikum diadakan sebagai salah bentuk pencapaian proses pembelajaran suatu mata kuliah. Satu sks terdiri dari 170 menit pembelajaran perminggu dalam satu semester untuk aktivitas praktikum. Aktivitas praktikum dilaksanakan selama 120 menit dan sisanya disebut tugas mandiri sebanyak 50 menit. Pada kenyataannya tugas mandiri yang dilaksanakan mahasiswa lebih dari 50 menit dalam 1 minggu. Mahasiswa sering terlihat mengalami penurunan performansi dalam aktivitas perkuliahan disertai dengan munculnya kondisi kelelahan. Kondisi tersebut sangat mempengaruhi beban kerja mental mahasiswa dalam beraktivitas, sehingga tujuan penelitian ini adalah untuk mengevaluasi sistem praktikum berdasarkan beban kerja mental melalui pengukuran performansi dan kelelahan di perguruan Tinggi X. Pengukuran tingkat performansi (waktu reaksi) menggunakan psychomotor vigilance test (PVT) dengan parameter mean 1/RT, shortest 10% 1/RT, lapses, dan longest 10% 1/RT, serta kelelahan menggunakan kuesioner visual analog scale (VAS). Pengukuran dilakukan setelah praktikum, sebelum asistensi laporan, dan sebelum presentasi laporan. Uji statistik menunjukan untuk parameter performansi yaitu shortest 10% 1/RT signifikan medeteksi perubahan untuk ketiga kondisi, sementara untuk mean 1/RT, lapses, dan longest 1/RT tidak signifikan dalam mendeteksi perubahan waktu reaksi untuk ketiga kondisi tersebut. Parameter VAS juga menunjukan hasil tidak signifikan dalam perubahan kondisi kelelahan untuk ketiga kondisi tersebut. Hasil menunjukan bahwa mahasiswa tidak mengalami peningkatan beban kerja mental saat melewati rangkaian proses praktikum di jurusan teknik industri pada perguruan tinggi X, sehingga sistem praktikum yang diterapkan saat ini dalam pencapaian proses pembelajaran sudah optimal.Kata kunci: waktu reaksi, kelelahan, PVT, VAS.ABSTRACTPracticum are observation, experiment, and examination towards the obtained course material. Practicum held as a form of achievement learning process of a course. One course credit (sks) has 170 minutes learning once a week witihin a semester dedicated for practicum activity. Practicum activity consists of 120 minutes actual practice and 50 minutes independent task. In fact, independent task occurs over 50 minutes once a week. Many Students have seen their academics performances decline, along with fatigue because of the practice activity while also attending lectures in classes. These Conditions often affected students mental workload, which is why the aim of this study is to evaluate practicum activity system based on mental workload through measurement of perfomance and fatigue on college X. Measurement performance rate (reaction time) use psychomotor vigilance test (PVT) with parameter mean 1/RT, shortest 10% 1/RT, lapses, and longest 10% 1/RT, with questionnaire visual analog scale (VAS) for fatigue measurement. Each measurement was made after practicum, before assistance report, and before a report presentation. Statistics showed shortest 10% 1/RT significant detecting transformation for third condition, while mean 1/RT, lapses, and longest 10% were not significant. VAS parameter showed not significant result in term of detecting transformation for those 3 condition mentioned berofe. Result showed mental workload through series of practicum activity at Industrial Engineering Major on college X are not significant, which is showed that the current practicum system activity for achievement learning process are optimum.Keywords: reaction time, fatigue, PVT, VAS.

scholarly journals How Mentally Fatiguing Are Consecutive World Padel Tour Matches?

2021 ◽  
Vol 18 (17) ◽  
pp. 9059
Author(s):  
Jesús Díaz-García ◽  
Inmaculada González-Ponce ◽  
Miguel Ángel López-Gajardo ◽  
Jeroen Van Cutsem ◽  
Bart Roelands ◽  
...  
Keyword(s):  
Reaction Time ◽  
Repeated Measures ◽  
Mental Fatigue ◽  
Time Intervals ◽  
Training Interventions ◽  
Psychomotor Vigilance Test ◽  
Recovery Strategies ◽  
Vigilance Test ◽  
Psychomotor Vigilance

It is currently unknown whether mental fatigue occurs throughout a WPT competition and whether consecutive matches affect how mentally fatiguing a match is perceived to be. The objective was to quantify the effects of successive professional matches on mental fatigue. A total of 14 professional players (9 males, Mage = 25, 5 females, Mage = 21) participated during qualified rounds of a WPT with three eliminatory matches: Match 1 (morning) and 2 (afternoon) on day 1 (n = 14), Match 3 (morning) on day 2 (n = 6). Mental fatigue and motivation, with scales, and reaction time, with a 3-min Psychomotor Vigilance Test, were measured at two time intervals (pre and post matches (<30 min)). To analyze the evolution of these variables, a two-way repeated measures MANOVA was performed. An increase in mental fatigue from pre- to post-matches was observed (p < 0.01), with an accumulation of mental fatigue between matches played on day 1 (p < 0.01), maximizing the mental fatigue perceived during Match 2. Padel matches impair motivation and reaction time (p = 0.04), without effects between successive matches, which reinforced the idea that mental fatigue may impair padel performance (i.e., reaction time). Coaches should use training interventions and recovery strategies to counteract/avoid the accumulation of mental fatigue during professional tournaments.

scholarly journals Genetic Determinants of Neurobehavioral Responses to Caffeine Administration during Sleep Deprivation: A Randomized, Cross Over Study (NCT03859882)

Genes ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 555
Author(s):  
Mégane Erblang ◽  
Fabien Sauvet ◽  
Catherine Drogou ◽  
Michaël Quiquempoix ◽  
Pascal Van Beers ◽  
...  
Keyword(s):  
Sleep Deprivation ◽  
Nucleotide Polymorphisms ◽  
Genetic Determinants ◽  
Placebo Condition ◽  
Double Blind ◽  
Single Nucleotide ◽  
Psychomotor Vigilance Test ◽  
Tnf Α ◽  
And Performance ◽  
Psychomotor Vigilance

This study investigated whether four single nucleotide polymorphisms (SNPs) moderated caffeine effects on vigilance and performance in a double-blind and crossover total sleep deprivation (TSD) protocol in 37 subjects. In caffeine (2 × 2.5 mg/kg/24 h) or placebo-controlled condition, subjects performed a psychomotor vigilance test (PVT) and reported sleepiness every six hours (Karolinska sleepiness scale (KSS)) during TSD. EEG was also analyzed during the 09:15 PVT. Carriers of the TNF-α SNP A allele appear to be more sensitive than homozygote G/G genotype to an attenuating effect of caffeine on PVT lapses during sleep deprivation only because they seem more degraded, but they do not perform better as a result. The A allele carriers of COMT were also more degraded and sensitive to caffeine than G/G genotype after 20 h of sleep deprivation, but not after 26 and 32 h. Regarding PVT reaction time, ADORA2A influences the TSD effect but not caffeine, and PER3 modulates only the caffeine effect. Higher EEG theta activity related to sleep deprivation was observed in mutated TNF-α, PER3, and COMT carriers, in the placebo condition particularly. In conclusion, there are genetic influences on neurobehavioral impairments related to TSD that appear to be attenuated by caffeine administration. (NCT03859882).

scholarly journals The Effects of Energy Drink Consumption on Cognitive and Physical Performance in Elite League of Legends Players

Sports ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 196 ◽  
Author(s):  
Casey J. Thomas ◽  
Jeffrey Rothschild ◽  
Conrad P. Earnest ◽  
Aaron Blaisdell
Keyword(s):  
Repeated Measures ◽  
Energy Drink ◽  
Video Gaming ◽  
Test Reaction ◽  
Double Blind ◽  
Convenience Sample ◽  
Hand Grip ◽  
Energy Drink Consumption ◽  
Physical Changes ◽  
League Of Legends

To examine the cognitive and physical changes associated with consuming an energy drink concurrent to video gaming, we examined a convenience sample of nine elite League of Legends (LoL) e-sport players (21 ± 2 y, BMI 25.6 ± 3.4 kg/m2) consuming an energy drink (ReloadTM) or placebo (Placebo) in a randomized, double-blind, placebo-controlled cross-over trial. Participants completed the same test battery prior to treatment consumption and after playing each of three competitive LoL games. Primary outcomes included measures of attention (Erikson Flanker Test), reaction time (Go/No-Go test) and working memory (n-back test). Secondary outcomes examined fatigue (hand grip strength and finger tap speed). Statistical analysis was performed by repeated-measures analysis of variance (RM-ANOVA) and reported as the mean (standard deviation [SD]) or mean change (95% confidence interval [CI]). Participants reported sleeping 8.1 (1.2) h/night, playing LoL 10.3 (2.1) h/d, playing other video games 1.8 (2.8) h/d, and exercising 4.2 (1.7) times per week. Overall, we observed no significant time, group, or group-by-time interactions for any measured performance index with the exception of a significant improvement for the n-back test, where the Reload group demonstrated a significant within-group improvement: Reload [−171 ms (95% CI, −327.91, −14.09), p < 0.004], Placebo [−92 ms (95% CI, −213.63, 29.63)]. However, no between-group differences were noted (38.50 ms, 95% CI, −141.89, 64.89, p = 0.803). Our findings suggest that elite eSport athletes do not demonstrate a mental or physical improvement in performance relative to the treatment supplement or indices measured in this study.

scholarly journals 0144 Relationship Between Sleep EEG K-Complex Slow Wave Coupling and Next-Day Thalamic Activity During Psychomotor Vigilance Test in Obstructive Sleep Apnea

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A57-A57
Author(s):  
A A Parekh ◽  
K Kam ◽  
A Mullins ◽  
A Fakhoury ◽  
B Castillo ◽  
...  
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Slow Wave ◽  
Excessive Daytime Sleepiness ◽  
Daytime Sleepiness ◽  
Wave Coupling ◽  
Psychomotor Vigilance Test ◽  
Obstructive Sleep ◽  
Vigilance Test ◽  
Psychomotor Vigilance

Abstract Introduction There is large inter-individual variability in the relationship between obstructive sleep apnea (OSA) severity and lapses in vigilance as measured using psychomotor vigilance test (PVT). We have previously shown that overnight sleep EEG K-complex slow wave coupling (∆SWAK) exhibits a dose-responsive relationship with next-day lapses in vigilance in OSA on and off treatment. We hypothesized that a variable thalamic dysfunction in OSA explains difference in lapses in vigilance and alterations in ∆SWAK across individuals. Methods Five newly diagnosed severe OSA subjects (mean apnea-hypopnea index [AHI4%=57.1±22.8/hr.]) with excessive daytime sleepiness (Epworth Sleepiness Scale=11±3.4) underwent nocturnal polysomnography followed by PVT testing within a 3T SKYRA MRI scanner. The PVT task inside the scanner (PVT-fMRI) was adapted to match the gold standard PVT-192 device. Each fMRI scanning session consisted of 2 10-min PVT runs interleaved with 2 control conditions wherein the subject pressed the response button at random intervals absent of a visual stimulus. fMRI data was analyzed in 2-step procedure (individual time-series followed by group analysis) using Analysis of Functional Neuroimages (AFNI) software package. To estimate thalamic activity during PVT-fMRI, parameter estimates of the %change in blood-oxygen-level-dependent (BOLD) signal using the contrast PVT-Control were used as the primary metric. The region of interest was limited to the bilateral thalamus using the Eickhoff-Zilles macro labels from the MNI N27 template. Results In a preliminary test, PVT performance for the subjects inside the scanner was not significantly different from that outside the scanner (PVTLapsesfMRI=7.3±2.1 vs. PVTLapsesPVT192=6.4±3.6 mean±std; PVTLapses=reaction time &gt; 500 ms.). Within subjects, a trend toward lower thalamic recruitment was observed during PVT-fMRI (-0.17±0.2%; p=0.1). Further, lower thalamic activity during PVT-fMRI also showed a trend to lower overnight ∆SWAK (mean -1.2±1.4) values (r = 0.61, p = 0.17). Conclusion In severe OSA subjects with excessive daytime sleepiness, we observed a trend to reduced thalamic activity during daytime PVT. Overnight EEG K-complex slow wave coupling showed a similar trend with next-day thalamic activity during PVT, however the small sample size may have limited our ability to detect this association with statistical significance. Support AASM Foundation 199-FP-18; NIH K24HL109156

A new metric for quantifying performance impairment on the psychomotor vigilance test

2012 ◽  
Vol 21 (6) ◽  
pp. 659-674 ◽  
Author(s):  
SRINIVASAN RAJARAMAN ◽  
SRIDHAR RAMAKRISHNAN ◽  
DAVID THORSLEY ◽  
NANCY J. WESENSTEN ◽  
THOMAS J. BALKIN ◽  
...  
Keyword(s):  
Psychomotor Vigilance Test ◽  
Performance Impairment ◽  
Vigilance Test ◽  
Psychomotor Vigilance

scholarly journals Measuring fatigue following acquired brain injury: A validation study of the Psychomotor Vigilance Test

2020 ◽  
Vol 52 (11) ◽  
pp. jrm00129
Author(s):  
J Bruijel ◽  
A Vermeeren ◽  
N Sluiszen ◽  
S Jongen ◽  
S Stapert ◽  
...  
Keyword(s):  
Brain Injury ◽  
Validation Study ◽  
Acquired Brain Injury ◽  
Psychomotor Vigilance Test ◽  
Vigilance Test ◽  
Psychomotor Vigilance

Effects of dextroamphetamine, caffeine and modafinil on psychomotor vigilance test performance after 44 h of continuous wakefulness

2008 ◽  
Vol 17 (3) ◽  
pp. 309-321 ◽  
Author(s):  
WILLIAM D. S. KILLGORE ◽  
TRACY L. RUPP ◽  
NANCY L. GRUGLE ◽  
REBECCA M. REICHARDT ◽  
ERICA L. LIPIZZI ◽  
...  
Keyword(s):  
Test Performance ◽  
Psychomotor Vigilance Test ◽  
Vigilance Test ◽  
Psychomotor Vigilance
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