Systematic Literature Review on the Immediate Effects of Caffeine on Athletes' Sports Performance

Published: Jan. 20, 2025

Research objective: This article aims to systematically summarize recent studies on the effects of caffeine athletes' athletic performance, with a focus exploring mechanism caffeine's action and lack empirical research. The goal is provide reference for domestic athle tes use as sports supplement, suggestions future Method: By searching China National Knowledge Infrastructure (CNKI) PubMed databases 417 research articles exercise performance from August 2019 2024, systematic review was conducted select 40 eligible articles. Analyze specific impact based multiple di mensions such sample information, intake, test items. Results: study found that positive have been validated in fields strength, endurance, specialized physical psychological abilities. Among them, strength accounts 75%, endurance sensitivity shows negative 20%. vast majority male athletes aged 20-25 training experience, commonly used intake 3 or 6mg/kg. Most choose let participants rest 60 minutes after testing. Conclusion: results show although number stable both do mestically internationally, selection biased towards age group, exploration scope still needs be expanded. It suggested can consider wider range programs populat ions, while conducting in-depth different combinations various types order improve supplementation plans reduce potential .

Language: Английский

Single and combined effect of beetroot juice and caffeine intake on muscular strength, power and endurance performance in resistance-trained males

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: May 14, 2025

To examine the single and combined effect of acute beetroot juice caffeine supplementation in muscular strength, power, endurance performance. Thirteen resistance-trained males participated a triple-blind, cross-over, randomized controlled-trial with four conditions: (a) (CAF); (b) (BJ); (c) (CAF + BJ); (d) placebo (PLA). Participants ingested 70 mL juice, concentrated NO3--rich beverage (BJ, 6.4 mmol NO3-) or PLA (~ 0.04 180 min (3 mg/kg) 60 before trial. Muscular strength/power was evaluated at 25%, 50%, 75%, 90% 100%1RM 65%1RM, bench press (BP) back squat (BS). In all tests, mean (Vmean Wmean) peak (Vpeak Wpeak) velocity power output were measured. BS, showed supplement-by-load Vmean Wmean (P < 0.05, ηp2 = 0.167-0.173), increased compared to (9-25%, P 0.005, g 0.51-1.47); while endurance, significant differences found number repetitions, > 0.277), experimental groups (CAF, BJ CAF BJ) (6-17%, 0.46-94). No BP. Single intake performance 65%1RM but not exercise.

Language: Английский

Acute Co-Ingestion of Caffeine and Sodium Bicarbonate on Muscular Endurance Performance

Nutrients, Journal Year: 2024, Volume and Issue: 16(24), P. 4382 - 4382

Published: Dec. 19, 2024

Background: Caffeine and sodium bicarbonate individually enhance muscular endurance by delaying fatigue, but their combined effects have scarcely been studied. Objectives: This study aimed to evaluate the acute of co-ingesting caffeine on at different loads in bench press back squat exercises. Methods: Twenty-seven recreationally trained participants (female/male: 14/14; age: 23 ± 3.6 years) were randomized four conditions a double-blind, crossover design: (a) (NaHCO3 + CAF); (b) (NaHCO3); (c) (CAF); (d) placebo (PLA); ingesting 0.3 g/kg NaHCO3, 3 mg/kg or (maltodextrin). Participants performed two muscle tests exercises 65% 85% 1RM, performing as many repetitions possible one set until task failure. Results: CAF increased number (p < 0.001; ηp2 = 0.111), mean velocity (Vmean, p 0.043, 0.16), power output (Wmean, 0.034, 0.15) compared placebo. These observed exercise 65%1RM Vmean (3.7%, 0.050, g 1.144) Wmean (5.2%, 0.047, 0.986) 85%1RM (5.4%, 0.22) (5.5%, 0.25). No ergogenic found NaHCO3 CAF) conditions. Conclusions: performance male female increasing repetitions, velocity, output; however, when was ingested, these not detected.

Language: Английский