Correction: Wilk et al. “The Effects of High Doses of Caffeine on Maximal Strength and Muscular Endurance in Athletes Habituated to Caffeine” Nutrients, 2019, 11(8), 1912
Conflicts of Interest
Reference
- Wilk, M.; Krzysztofik, M.; Filip, A.; Zajac, A.; Del Coso, J. The Effects of High Doses of Caffeine on Maximal Strength and Muscular Endurance in Athletes Habituated to Caffeine. Nutrients 2019, 11, 1912. [Google Scholar] [CrossRef] [PubMed]
Variable | Placebo (95% CI) | CAF-9 (95% CI) | CAF-11 (95% CI) | F | p |
---|---|---|---|---|---|
1RM [kg] | 118.3 ± 14.5 (109.4 − 125.5) | 122.3 ± 15.3 (115.7 − 132.5) | 124.2 ± 11.4 (116.3 − 135.2) | 7.46 | 0.01 * |
T-REP [n] | 25.1 ± 3.2 (23.3 − 26.8) | 25.0 ± 4.9 (22.4 − 27.6) | 25.6 ± 3.3 (23.8 − 27.3) | 0.14 | 0.86 |
TUTCON [s] | 17.1 ± 3.29 (15.3 − 18.8) | 19.1 ± 3.29 (17.3 − 20.8) | 16.9 ± 3.39 (15.1 − 18.8) | 2.67 | 0.08 |
MP [W] | 348 ± 79 (305 − 390) | 333 ± 72 (294 − 372) | 318 ± 78 (276 − 360) | 6.07 | 0.01 * |
PP [W] | 798 ± 164 (710 − 886) | 766 ± 134 (694 − 837) | 731 ± 186 (632 − 831) | 3.27 | 0.04 * |
MV [m/s] | 0.71 ± 0.10 (0.66 − 0.76) | 0.67 ± 0.08 (0.63 − 0.72) | 0.70 ± 0.07 (0.66 − 0.74) | 1.39 | 0.26 |
PV [m/s] | 1.39 ± 0.16 (1.31 − 1.48) | 1.37 ± 0.15 (1.29 − 1.45) | 1.25 ± 0.17 (1.16 − 1.34) | 6.09 | 0.01 * |
Variable | Comparison | p | Effect Size (Cohen d) | Relative Effects [%] |
---|---|---|---|---|
1RM [kg] | Placebo vs. CAF-9 | 0.01 * | 0.26—small | 3.3 ± 4.1 |
Placebo vs. CAF-11 | 0.01 * | 0.45—small | 4.7 ± 5.1 | |
T-REP [n] | Placebo vs. CAF-9 | 0.99 | −0.02—negative effects | 0.4 ± 12.1 |
Placebo vs. CAF-11 | 0.90 | 0.15—small | 2.0 ± 11.2 | |
TUTCON [s] | Placebo vs. CAF-9 | 0.14 | 0.6—moderate | 10.5 ± 15.5 |
Placebo vs. CAF-11 | 0.99 | −0.05—negative effects | −6.2 ± 21.5 | |
MP [W] | Placebo vs. CAF-9 | 0.21 | −0.19—negative effects | −1.5 ± 7.6 |
Placebo vs. CAF-11 | 0.01 * | −0.38—negative effects | −9.4 ± 10.5 | |
PP [W] | Placebo vs. CAF-9 | 0.44 | −0.21—negative effects | −4.2 ± 8.3 |
Placebo vs. CAF-11 | 0.04 * | −0.38—negative effects | −9.2 ± 11.6 | |
MV [m/s] | Placebo vs. CAF-9 | 0.25 | −0.44—negative effects | −6.0 ± 11.8 |
Placebo vs. CAF-11 | 0.86 | −0.11—negative effects | −1.4 ± 6.6 | |
PV [m/s] | Placebo vs. CAF-9 | 0.84 | −0.12—negative effects | −1.5 ± 10.2 |
Placebo vs. CAF-11 | 0.01 * | −0.84—negative effects | −11.2 ± 10.7 |
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Wilk, M.; Krzysztofik, M.; Filip, A.; Zajac, A.; Del Coso, J. Correction: Wilk et al. “The Effects of High Doses of Caffeine on Maximal Strength and Muscular Endurance in Athletes Habituated to Caffeine” Nutrients, 2019, 11(8), 1912. Nutrients 2019, 11, 2660. https://doi.org/10.3390/nu11112660
Wilk M, Krzysztofik M, Filip A, Zajac A, Del Coso J. Correction: Wilk et al. “The Effects of High Doses of Caffeine on Maximal Strength and Muscular Endurance in Athletes Habituated to Caffeine” Nutrients, 2019, 11(8), 1912. Nutrients. 2019; 11(11):2660. https://doi.org/10.3390/nu11112660
Chicago/Turabian StyleWilk, Michal, Michal Krzysztofik, Aleksandra Filip, Adam Zajac, and Juan Del Coso. 2019. "Correction: Wilk et al. “The Effects of High Doses of Caffeine on Maximal Strength and Muscular Endurance in Athletes Habituated to Caffeine” Nutrients, 2019, 11(8), 1912" Nutrients 11, no. 11: 2660. https://doi.org/10.3390/nu11112660