- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT07641335
Effects of Caffeine on Chess Performance and Cognitive Function in Professional Chess Players (GRANDMASTER)
GRANDMASTER: Gauging the Role of Alertness and Neurostimulation With Dietary Caffeine in Master-Level Chess; A Double-Blind Randomized Crossover Trial
Tutkimuksen yleiskatsaus
Tila
Interventio / Hoito
Yksityiskohtainen kuvaus
This randomized double-blind crossover trial will evaluate the effects of moderate caffeine intake on cognitive and competitive performance in professional chess players. Twelve FIDE-rated chess players will complete two experimental conditions in randomized order: caffeinated coffee and decaffeinated coffee placebo. During each visit, participants will complete standardized cognitive assessments and a tournament-style chess game under controlled laboratory conditions.
Primary outcomes will include objective chess performance metrics derived from chess engine analysis, including move accuracy, centipawn loss, error rates, and time management. Secondary outcomes will include cognitive test performance, tactical reaction time, and self-reported alertness and fatigue. Chess games will be analyzed using standardized software-based evaluation methods.
The crossover design allows each participant to serve as their own control, minimizing variability related to individual differences in skill level, caffeine tolerance, and playing style. The study aims to determine whether caffeine enhances sustained attention, decision-making, and competitive chess performance during prolonged gameplay. Findings may provide insight into nutritional strategies for cognitive performance optimization in mentally demanding competitive environments.
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskeluyhteys
- Nimi: Hossein Rafiei, PhD
- Puhelinnumero: 13149778675
- Sähköposti: hossein.rafiei@health.slu.edu
Opiskelupaikat
-
-
Missouri
-
St Louis, Missouri, Yhdysvallat, 63104
- Saint Louis University
-
Ottaa yhteyttä:
- Hossein Rafiei, PhD
- Puhelinnumero: 1314-977-8675
- Sähköposti: hossein.rafiei@health.slu.edu
-
Päätutkija:
- Hossein Rafiei, PhD
-
-
Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
- Aikuinen
Hyväksyy terveitä vapaaehtoisia
Kuvaus
Inclusion Criteria:
- Male and female professional chess players aged 18-50 years
- Current Fédération Internationale des Échecs (FIDE) standard rating between 2300 and 2600 Elo, or achievement of a standard FIDE rating within this range during the previous 12 months
- Habitual caffeine consumers consuming ≤2 cups of coffee per day
- Willingness to comply with all study procedures and study visits
- Ability to provide written informed consent
Exclusion Criteria:
- Non-caffeine users
- Habitual caffeine intake exceeding 2 cups of coffee per day
- Cardiovascular disorders
- Metabolic disorders
- Psychiatric disorders
- Pregnancy or breastfeeding
- Current smoking
- Shift workers
- Use of psychoactive medications
- Participation in another clinical trial within the previous 3 months
- Known allergy or intolerance to milk proteins, dairy products, or soy
- Known red-green color blindness or other color vision deficiencies that may interfere with Stroop Test performance
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Perustiede
- Jako: Satunnaistettu
- Inventiomalli: Crossover-tehtävä
- Naamiointi: Kolminkertaistaa
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
|---|---|
|
Active Comparator: Caffeinated Coffee
Participants will consume one serving of black caffeinated coffee prepared from 15 g of ground coffee brewed in 200 g of water, providing approximately 100 mg of caffeine.
The beverage will be consumed approximately 30 minutes before completion of cognitive testing and a standardized tournament-style chess game during the experimental visit.
|
Black caffeinated coffee prepared from 15 g of ground coffee brewed in 200 g of water, providing approximately 100 mg of caffeine.
The beverage will be consumed approximately 30 minutes before cognitive testing and tournament-style chess gameplay.
|
|
Placebo Comparator: Decaffeinated Coffee Placebo
Participants will consume one serving of black decaffeinated coffee prepared to match the caffeinated coffee in taste and appearance.
The beverage will be consumed approximately 30 minutes before completion of cognitive testing and a standardized tournament-style chess game during the experimental visit.
|
Black decaffeinated coffee prepared from the same batch of coffee beans and matched for taste and appearance to the caffeinated condition.
The beverage will be consumed approximately 30 minutes before cognitive testing and tournament-style chess gameplay.
|
Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Chess Performance Accuracy
Aikaikkuna: 30 minutes after beverage consumption through completion of the tournament-style chess game at each experimental visit.
|
Chess performance accuracy will be assessed using engine-based analysis of tournament-style chess games.
The primary reported metric will be average centipawn loss per move, with lower values indicating better chess performance accuracy.
|
30 minutes after beverage consumption through completion of the tournament-style chess game at each experimental visit.
|
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Puzzle Rush Correct Responses
Aikaikkuna: Approximately 30 minutes after beverage consumption at each experimental visit.
|
Tactical accuracy will be assessed using the 3-minute Puzzle Rush task on Chess.com.
The outcome will be the total number of correctly solved tactical puzzles, with higher scores indicating better tactical accuracy.
|
Approximately 30 minutes after beverage consumption at each experimental visit.
|
|
Puzzle Rush Response Speed
Aikaikkuna: Approximately 30 minutes after beverage consumption at each experimental visit.
|
Response speed will be assessed using the 3-minute Puzzle Rush task on Chess.com.
The outcome will be average response time per puzzle, with lower values indicating faster response speed.
|
Approximately 30 minutes after beverage consumption at each experimental visit.
|
|
Stroop Test Performance
Aikaikkuna: Before gameplay and immediately after gameplay at each experimental visit.
|
Selective attention will be assessed using the Stroop Test.
The outcome will be the change in Stroop Test completion time from before gameplay to immediately after gameplay, with lower completion time indicating better performance.
|
Before gameplay and immediately after gameplay at each experimental visit.
|
|
Trail Making Test Performance
Aikaikkuna: Before gameplay and immediately after gameplay at each experimental visit.
|
Cognitive flexibility and processing speed will be assessed using the Trail Making Test.
The outcome will be the change in Trail Making Test completion time from before gameplay to immediately after gameplay, with lower completion time indicating better performance.
|
Before gameplay and immediately after gameplay at each experimental visit.
|
|
Self-Reported Alertness
Aikaikkuna: Pre-game and immediately post-game at each experimental visit.
|
Self-reported alertness will be assessed using a study-specific visual analog questionnaire.
Higher scores will indicate greater perceived alertness.
|
Pre-game and immediately post-game at each experimental visit.
|
|
Self-Reported Mental Fatigue
Aikaikkuna: Pre-game and immediately post-game at each experimental visit.
|
Self-reported mental fatigue will be assessed using a study-specific visual analog questionnaire.
Higher scores will indicate greater perceived mental fatigue.
|
Pre-game and immediately post-game at each experimental visit.
|
|
Average Time Per Move
Aikaikkuna: From the start of the tournament-style chess game until game completion, assessed over approximately 3 to 4 hours at each experimental visit.
|
Chess time management will be assessed as the average time used per move during each tournament-style chess game.
This value will be calculated from the total game time divided by the number of moves completed by the participant.
|
From the start of the tournament-style chess game until game completion, assessed over approximately 3 to 4 hours at each experimental visit.
|
Yhteistyökumppanit ja tutkijat
Sponsori
Tutkijat
- Päätutkija: Hossein Rafiei, PhD, St. Louis University
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Arvioitu)
Ensisijainen valmistuminen (Arvioitu)
Opintojen valmistuminen (Arvioitu)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
Muut tutkimustunnusnumerot
- SLU-CHESS-CAFF-2026
Yksittäisten osallistujien tietojen suunnitelma (IPD)
Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?
IPD-suunnitelman kuvaus
Lääke- ja laitetiedot, tutkimusasiakirjat
Tutkii yhdysvaltalaista FDA sääntelemää lääkevalmistetta
Tutkii yhdysvaltalaista FDA sääntelemää laitetuotetta
Nämä tiedot haettiin suoraan verkkosivustolta clinicaltrials.gov ilman muutoksia. Jos sinulla on pyyntöjä muuttaa, poistaa tai päivittää tutkimustietojasi, ota yhteyttä register@clinicaltrials.gov. Heti kun muutos on otettu käyttöön osoitteessa clinicaltrials.gov, se päivitetään automaattisesti myös verkkosivustollemme .