The effects of different doses of caffeine on maximal strength and strength‐endurance in women habituated to caffeine

Filip-Stachnik, Aleksandra; Wilk, Michał; Krzysztofik, Michał; Lulińska, Ewelina; Tufano, James J.; Zając, Adam; Šťastný, Petr; Coso, Juan Del

doi:10.1186/s12970-021-00421-9

Cited by 31 publications

(64 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…After reading 30 full-text papers, 7 studies were found that satisfied the inclusion criteria [ 7 , 10 , 11 , 15 , 16 , 17 , 18 ]. In the secondary search, there were 669 search results, and one study was additionally included [ 19 ]. Therefore, we included a total of 8 studies in the present review [ 7 , 10 , 11 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Resultsmentioning

confidence: 99%

“…In the secondary search, there were 669 search results, and one study was additionally included [ 19 ]. Therefore, we included a total of 8 studies in the present review [ 7 , 10 , 11 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Resultsmentioning

confidence: 99%

“…The included studies did not present inter-trial correlation, and therefore, correlation values were estimated as suggested in the Cochrane Handbook [ 25 ]. Some studies evaluated performance under multiple caffeine conditions [ 10 , 15 , 18 , 19 ]. To account for these correlated effects within the same study, we first calculated SMDs and variances for each comparison and then used the average values in the main analysis.…”

Section: Methodsmentioning

confidence: 99%

“…To account for these correlated effects within the same study, we first calculated SMDs and variances for each comparison and then used the average values in the main analysis. For example, one study [ 19 ] used a dose-response design and explored the effects of consuming either 3 or 6 mg/kg of caffeine. For this study, we calculated SMDs and variances individually for the comparison of placebo vs. 3 mg/kg of caffeine and the comparison of placebo vs. 6 mg/kg of caffeine.…”

Section: Methodsmentioning

confidence: 99%

“…However, out of the 10 studies included in that review, only 3 and 2 studies focused on muscular strength and muscular endurance outcomes, respectively. In recent years, the interest in determining the ergogenic effect of caffeine in women has increased and several primary studies examined the effects of caffeine on muscular endurance and muscular strength in this population [ 15 , 16 , 17 , 18 , 19 ]. Accordingly, it is an opportune time to summarize their findings in a meta-analysis.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Ergogenic Effects of Acute Caffeine Intake on Muscular Endurance and Muscular Strength in Women: A Meta-Analysis

Grgić

Coso

2021

IJERPH

Self Cite

View full text Add to dashboard Cite

This meta-analysis aimed to explore the effects of caffeine ingestion on muscular endurance and muscular strength in women. Five databases were searched to find relevant studies. A random-effects meta-analysis of standardized mean differences (SMD) was performed for data analysis. Subgroup meta-analyses explored the effects of caffeine on upper-body and lower-body muscular endurance and muscular strength. Eight crossover placebo-controlled studies were included in the review. In the main meta-analysis that considered data from all included studies, there was a significant ergogenic effect of caffeine on muscular endurance (SMD = 0.25; p = 0.027) and muscular strength (SMD = 0.18; p < 0.001). In a subgroup analysis that considered only upper-body exercises, there was a significant ergogenic effect of caffeine on muscular endurance (SMD = 0.20; p = 0.007) and muscular strength (SMD = 0.17; p < 0.001). In a subgroup analysis that considered only lower-body exercises, there was no significant difference between caffeine and placebo for muscular endurance (SMD = 0.43; p = 0.092) or muscular strength (SMD = 0.16; p = 0.109). The main finding of this meta-analysis is that caffeine ingestion has a significant ergogenic effect on muscular endurance and muscular strength in women. The effects reported in this analysis are similar to those previously observed in men and suggest that women may use caffeine supplementation as an ergogenic aid for muscular performance. Future research is needed to explore the effects of caffeine on lower-body muscular endurance and muscular strength in this population.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ergogenic Effects of Acute Caffeine Intake on Muscular Endurance and Muscular Strength in Women: A Meta-Analysis

Grgić

Coso

2021

IJERPH

Self Cite

View full text Add to dashboard Cite

show abstract

Acute effects of two caffeine doses on bar velocity during the bench press exercise among women habituated to caffeine: a randomized, crossover, double-blind study involving control and placebo conditions

et al. 2021

Self Cite

View full text Add to dashboard Cite

Purpose The main goal of this study was to evaluate the effectiveness of two different doses of caffeine (3 and 6 mg/kg) to enhance bar velocity during the bench press in women habituated to caffeine. Methods Twelve recreationally trained women (age: 23.3 ± 0.8 years, body mass: 60.7 ± 5.7 kg, bench press one-repetition maximum (1RM): 44.3 ± 7.8 kg, daily caffeine ingestion: 5.7 ± 2.0 mg/kg/day) participated in a randomized double-blind experimental design. Each participant performed four different experimental sessions: after no supplementation (control, CON), after ingesting 3 and 6 mg/kg of caffeine (CAF-3 and CAF-6, respectively), or after ingesting a placebo (PLAC). In each experimental session, the participants performed 3 sets of 3 repetitions of the bench press exercise at 50% 1RM. Results A two-way repeated-measures ANOVA with subsequent post hoc analyses indicated significant increases in peak velocity (p < 0.01; ES = 0.91) and mean velocity (p < 0.01; ES = 0.78) after the intake of CAF-6 compared to CON. The study did not show significant differences in bar velocity between CAF-6 and PLAC and between CAF-3 and PLAC. No significant differences in bar velocity were observed between CAF-3 and CAF-6 conditions. Conclusion These results suggest that 6 mg/kg of caffeine can be an effective dose to improve power-specific training outcomes in women habituated to caffeine. However, the ergogenic effect of 6 mg/kg of caffeine may be derived from a combination of biological effects and expectancy, as this dose was only superior to the control condition with no differences over the placebo.

show abstract

Effect of isolated and combined ingestion of caffeine and citrulline malate on resistance exercise and jumping performance: a randomized double-blind placebo-controlled crossover study

Haugen,

Vårvik,

Grgic

et al. 2023

Eur J Nutr

View full text Add to dashboard Cite

Purpose The aim of this study was to explore the isolated and combined effects of caffeine and citrulline malate (CitMal) on jumping performance, muscular strength, muscular endurance, and pain perception in resistance-trained participants. Methods Using a randomized and double-blind study design, 35 resistance-trained males (n = 18) and females (n = 17) completed four testing sessions following the ingestion of isolated caffeine (5 mg/kg), isolated CitMal (12 g), combined doses of caffeine and CitMal, and placebo. Supplements were ingested 60 min before performing a countermovement jump (CMJ) test (outcomes included jump height, rate of force development, peak force, and peak power), one-repetition maximum (1RM) squat and bench press, and repetitions to muscular failure in the squat and bench press with 60% of 1RM. Pain perception was evaluated following the repetitions to failure tests. The study was registered at ISRCTN (registration number: ISRCTN11694009). Results Compared to the placebo condition, isolated caffeine ingestion and co-ingestion of caffeine and CitMal significantly enhanced strength in 1RM bench press (Cohen’s d: 0.05–0.06; 2.5–2.7%), muscular endurance in the squat (d: 0.46–0.58; 18.6–18.7%) and bench press (d: 0.48–0.64; 9.3–9.5%). However, there was no significant difference between isolated caffeine ingestion and caffeine co-ingested with CitMal, and isolated CitMal supplementation did not have an ergogenic effect in any outcome. No main effect of condition was found in the analysis for CMJ-derived variables, 1RM squat and pain perception. Conclusion Caffeine ingestion appears to be ergogenic for muscular strength and muscular endurance, while adding CitMal does not seem to further enhance these effects.

show abstract

The effects of different doses of caffeine on maximal strength and strength‐endurance in women habituated to caffeine

Cited by 31 publications

References 56 publications

Ergogenic Effects of Acute Caffeine Intake on Muscular Endurance and Muscular Strength in Women: A Meta-Analysis

Ergogenic Effects of Acute Caffeine Intake on Muscular Endurance and Muscular Strength in Women: A Meta-Analysis

Acute effects of two caffeine doses on bar velocity during the bench press exercise among women habituated to caffeine: a randomized, crossover, double-blind study involving control and placebo conditions

Effect of isolated and combined ingestion of caffeine and citrulline malate on resistance exercise and jumping performance: a randomized double-blind placebo-controlled crossover study

Contact Info

Product

Resources

About