Effects of Caffeine on Chess Performance and Cognitive Function in Professional Chess Players (GRANDMASTER)
2026년 6월 8일 업데이트: Hossein Rafiei, St. Louis University
GRANDMASTER: Gauging the Role of Alertness and Neurostimulation With Dietary Caffeine in Master-Level Chess; A Double-Blind Randomized Crossover Trial
This study will examine whether caffeine improves cognitive and competitive performance in professional chess players during tournament-style games.
In a randomized double-blind crossover design, participants will complete two experimental sessions in which they consume either caffeinated coffee or decaffeinated coffee before playing a standardized chess match.
Cognitive performance will be assessed using attention and reaction-time tests, including the Stroop Test, Trail Making Test, and Puzzle Rush task.
Chess performance outcomes such as move accuracy, time management, and error rates will also be evaluated.
The study aims to determine whether moderate caffeine intake enhances focus, alertness, and decision-making during prolonged competitive chess play.
연구 개요
상태
아직 모집하지 않음
상세 설명
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.
연구 유형
중재적
등록 (추정된)
12
단계
- 해당 없음
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 연락처
- 이름: Hossein Rafiei, PhD
- 전화번호: 13149778675
- 이메일: hossein.rafiei@health.slu.edu
연구 장소
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Missouri
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St Louis, Missouri, 미국, 63104
- Saint Louis University
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연락하다:
- Hossein Rafiei, PhD
- 전화번호: 1314-977-8675
- 이메일: hossein.rafiei@health.slu.edu
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수석 연구원:
- Hossein Rafiei, PhD
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참여기준
연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.
자격 기준
공부할 수 있는 나이
- 성인
건강한 자원 봉사자를 받아들입니다
예
설명
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
공부 계획
이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 기초 과학
- 할당: 무작위
- 중재 모델: 크로스오버 할당
- 마스킹: 삼루타
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
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활성 비교기: 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.
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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.
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위약 비교기: 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.
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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.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Chess Performance Accuracy
기간: 30 minutes after beverage consumption through completion of the tournament-style chess game at each experimental visit.
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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.
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30 minutes after beverage consumption through completion of the tournament-style chess game at each experimental visit.
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Puzzle Rush Correct Responses
기간: Approximately 30 minutes after beverage consumption at each experimental visit.
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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.
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Approximately 30 minutes after beverage consumption at each experimental visit.
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Puzzle Rush Response Speed
기간: Approximately 30 minutes after beverage consumption at each experimental visit.
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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.
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Approximately 30 minutes after beverage consumption at each experimental visit.
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Stroop Test Performance
기간: Before gameplay and immediately after gameplay at each experimental visit.
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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.
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Before gameplay and immediately after gameplay at each experimental visit.
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Trail Making Test Performance
기간: Before gameplay and immediately after gameplay at each experimental visit.
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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.
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Before gameplay and immediately after gameplay at each experimental visit.
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Self-Reported Alertness
기간: Pre-game and immediately post-game at each experimental visit.
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Self-reported alertness will be assessed using a study-specific visual analog questionnaire.
Higher scores will indicate greater perceived alertness.
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Pre-game and immediately post-game at each experimental visit.
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Self-Reported Mental Fatigue
기간: Pre-game and immediately post-game at each experimental visit.
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Self-reported mental fatigue will be assessed using a study-specific visual analog questionnaire.
Higher scores will indicate greater perceived mental fatigue.
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Pre-game and immediately post-game at each experimental visit.
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Average Time Per Move
기간: From the start of the tournament-style chess game until game completion, assessed over approximately 3 to 4 hours at each experimental visit.
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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.
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From the start of the tournament-style chess game until game completion, assessed over approximately 3 to 4 hours at each experimental visit.
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공동 작업자 및 조사자
여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
수사관
- 수석 연구원: Hossein Rafiei, PhD, St. Louis University
연구 기록 날짜
이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.
연구 주요 날짜
연구 시작 (추정된)
2026년 6월 15일
기본 완료 (추정된)
2027년 6월 1일
연구 완료 (추정된)
2027년 8월 1일
연구 등록 날짜
최초 제출
2026년 5월 24일
QC 기준을 충족하는 최초 제출
2026년 6월 8일
처음 게시됨 (실제)
2026년 6월 11일
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
2026년 6월 11일
QC 기준을 충족하는 마지막 업데이트 제출
2026년 6월 8일
마지막으로 확인됨
2026년 6월 1일
추가 정보
이 연구와 관련된 용어
키워드
기타 연구 ID 번호
- SLU-CHESS-CAFF-2026
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
아니요
IPD 계획 설명
Individual participant data (IPD) will not be publicly shared because this is a small pilot study involving highly specialized professional chess players, and there is potential risk of participant identification despite de-identification procedures.
약물 및 장치 정보, 연구 문서
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아니
미국 FDA 규제 기기 제품 연구
아니
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
Caffeinated Coffee에 대한 임상 시험
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