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Ebrahimi, Mohsen, Keneshloo, Maryam, Rahmani, Aliakbar. (1404). The effect of caffeine consumption on anger and performance in martial arts athletes. , 4(3), 1-9. doi: 10.22034/ren.2025.143751.1100
Mohsen Ebrahimi; Maryam Keneshloo; Aliakbar Rahmani. "The effect of caffeine consumption on anger and performance in martial arts athletes". , 4, 3, 1404, 1-9. doi: 10.22034/ren.2025.143751.1100
Ebrahimi, Mohsen, Keneshloo, Maryam, Rahmani, Aliakbar. (1404). 'The effect of caffeine consumption on anger and performance in martial arts athletes', , 4(3), pp. 1-9. doi: 10.22034/ren.2025.143751.1100
Ebrahimi, Mohsen, Keneshloo, Maryam, Rahmani, Aliakbar. The effect of caffeine consumption on anger and performance in martial arts athletes. , 1404; 4(3): 1-9. doi: 10.22034/ren.2025.143751.1100

The effect of caffeine consumption on anger and performance in martial arts athletes

Research in Exercise Nutrition
دوره 4، شماره 3، آذر 2025، صفحه 1-9    اصل مقاله (1.42 M)
نوع مقاله: Research Paper I Open Access I Released under (CC BY-NC 4.0) license
شناسه دیجیتال (DOI): 10.22034/ren.2025.143751.1100
نویسندگان
Mohsen Ebrahimi* 1؛ Maryam Keneshloo2؛ Aliakbar Rahmani2
1Department of Sport Sciences, Faculty of Humanities, Semnan University, Semnan, Iran.
2Department of Exercise Science, Faculty of Humanities, Semnan University, Semnan, Iran.
چکیده
Aim: Caffeine supplementation has a consistent ergogenic effect on physical performance and psychological response to exercise. However, few studies have compared the response to caffeine consumption among athletes of different levels of competition. This study was conducted to investigate the effect of caffeine consumption on anger and performance in martial arts athletes.

Method: Twelve athletes (6 female and 6 male) with at least 3 years of martial arts experience, aged 18 to 25 years, were recruited. Athletes consumed 5 mg/kg of caffeine (Enercaff200) or placebo (identical empty capsule) in two sessions over two consecutive weeks in a balanced, double-blind crossover design. One hour after consumption, they completed the State-Trait Anger Expression Questionnaire (Spielberger, 1999; STAXI-2) and then participated in a standardized fight and completed the same questionnaire again immediately after the fight. Pressure perception test, KAST aerobic test, strength test and agility test are also taken from them. The results are analyzed with a paired t-test.

Results: The results show that caffeine significantly increases KAST aerobic test (p=0.019), state anger/feeling anger (SANGF) (p=0.029), state anger/feeling anger tendency to verbalize anger (SANGV) (p=0.032). However, there is no significant difference in other variables.

Conclusion: It seems that caffeine can increase aerobic capacity and anger in martial artists.

تازه های تحقیق
  • Caffeine ingestion increased subjective feelings of momentary anger.
  • Caffeine did not significantly improve aerobic capacity, agility, handgrip strength, or perceived exertion.
  • Coaches and sport psychologists should consider both the ergogenic and psychological effects of caffeine before recommending its use.
  • Individual variability in caffeine responsiveness should be considered when designing supplementation strategies.
کلیدواژه‌ها
Caffeine؛ Martial Arts؛ Performance؛ Aerobic Capacity؛ Anger
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