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Table 1 Characteristics of the participants

From: CYP1A2 genotype and acute effects of caffeine on resistance exercise, jumping, and sprinting performance

Variable

AA group (n = 13)

AC/CC group (n = 9)

p-values from one-way ANOVA

Age (years)

27.0 ± 5.6

29.8 ± 3.6

0.205

Body mass (kg)

78.2 ± 6.5

80.9 ± 14.8

0.559

Height (cm)

182.2 ± 5.5

183.2 ± 5.7

0.658

1RM in the bench press (normalized per body mass)

1.1 ± 0.1

1.2 ± 0.2

0.240

Habitual caffeine intake (mg/day)

133 ± 123

117 ± 68

0.286

  1. Data reported as mean ± standard deviation; 1RM one repetition maximum; habitual caffeine intake was estimated using a Food Frequency Questionnaire