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Table 1 Descriptive variables and caffeine intake

From: The effects of a caffeine-like supplement, TeaCrine®, on muscular strength, endurance and power performance in resistance-trained men

Variable Mean Range
Age (years) 23.2 ± 3.1 20–29
Height (cm) 177 ± 6 163–185
Body Mass (kg) 83 ± 7 67–92
Relative Bench Press Strength (1-RM/body mass) 1.4 ± 0.2 1.3–1.7
Relative Squat Strength (1-RM/body mass) 1.7 ± 0.2 1.4–2.2
Habitual Caffeine Intake (mg/day) 215 ± 72.7 100–300
Relative Caffeine Intake for Experiments (mg/kg) 3.6 ± 0.3 3.3–4.5
  1. Data presented as mean ± SD
  2. cm centimeters, kg kilograms, 1-RM/body mass one-repetition maximum in kg / body mass kg, mg milligrams