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Table 1 Characteristics of participants with high (HCF) or medium cardiorespiratory fitness (MCF); and with high (HNF) or medium neuromuscular fitness (MNF)

From: Caffeine supplementation is ergogenic in soccer players independent of cardiorespiratory or neuromuscular fitness levels

Group

Age

(years)

Body height

(m)

Body mass

(kg)

Body fat

(%)

VO2max

(ml∙kg− 1∙min− 1)

CMJ

(cm)

Daily

caffeine

consumption

(mg)

Daily

caffeine

consumption (mg∙kg− 1)

HCF

(n = 10)

21 ± 4

1.78 ± 0.05

71.93 ± 6.30

9.61 ± 2.58*

64.35 ± 2.37*

40.23 ± 1.98

65 (17–373)

0.9 (0.2–4.6)

MCF

(n = 10)

22 ± 4

1.78 ± 0.07

76.39 ± 8.68

13.31 ± 3.73

57.16 ± 2.16

39.39 ± 6.63

120 (0–351)

1.6 (0–3.9)

HNF

(n = 10)

21 ± 3

1.77 ± 0.05

71.95 ± 6.45

9.76 ± 2.65*

61.72 ± 4.69*

43.30 ± 3.28*

66 (15–375)

0.9 (0.2–4.6)

MNF

(n = 10)

22 ± 4

1.80 ± 0.06

76.37 ± 8.58

13.16 ± 3.84

59.79 ± 3.87

36.32 ± 3.22

104 (0–351)

1.5 (0–3.9)

  1. Data are presented as mean ± SD or median (range)
  2. *Significant difference from the corresponding medium-fitness group (p < 0.05)