Table 3.
Match-play movement patterns with the ingestion of 3 mg·kg−1 bm of caffeine or a placebo in professional handball players with different genotypes in the −163C > A polymorphism of the CYP1A2 gene.
| Variable (Units) | CYP1A2 Genotype | Placebo | Caffeine | % Change | ES [95%CI] | Interaction |
|---|---|---|---|---|---|---|
| ACC (number/min) | AA | 18.89 ± 1.28 | 18.79 ± 0.94 | −0.5 | −0.09 [−0.29, 0.11] | 0.090 |
| C-allele | 18.64 ± 1.64 | 19.40 ± 1.28 | 4.1 | 0.52 [0.35, 0.68] | ||
| DEC (number/min) | AA | 19.09 ± 1.13 | 18.46 ± 1.07 | −3.3 | −0.57 [−0.77, −0.37] | 0.344 |
| C-allele | 18.92 ± 1.58 | 18.93 ± 1.66 | 0.1 | 0.01 [−0.16, 0.17] | ||
| BI (number/min) | AA | 20.57 ± 13.37 | 21.64 ± 13.65 | 5.2 | 0.08 [−0.12, 0.28] | 0.307 |
| C-allele | 26.58 ± 9.14 | 30.05 ± 12.65 | 13.1 | 0.31 [0.15, 0.48] |
Abbreviations: ACC: acceleration; DEC: decelerations; BI: body impacts; ES: effect size; CI: confidence interval.