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Table 1 Descriptive characteristics of BG (n = 14) or PG (n = 15) in the soccer players U16, separately

From: The effects of 14-week betaine supplementation on endocrine markers, body composition and anthropometrics in professional youth soccer players: a double blind, randomized, placebo-controlled trial

Variables

Groups

Mean ± SD

Minimum

Maximum

Height (cm)

BG

172.1 ± 2.3

170

177

PG

174.2 ± 4

168

183

Weight (kg)

BG

59.2 ± 4.8

53

68.5

PG

65.8 ± 7.0

56.5

79.9

Sitting height (cm)

BG

92.7 ± 1.4

90.0

96.5

PG

93.9 ± 3.3

89.0

99.0

PHV (years)

BG

13.6 ± 0.2

13.2

14.0

PG

13.4 ± 0.5

12.5

14.1

Maturity Offsets (years)

BG

1.8 ± 0.2

1.5

2.3

PG

2.1 ± 0.4

1.3

2.7

Age (years)

BG

15.4 ± 0.3

15.0

15.8

PG

15.5 ± 0.2

15.0

15.7

Experience (years)

BG

6.6 ± 1.5

4

9

PG

6 ± 1.6

4

9

BMR (kcal/day)

BG

1628.9 ± 72.9

1543.8

1771.1

PG

1730.3 ± 109.3

1581.7

1942.3

Total calories (kcal/day)

BG

2524.7 ± 112.9

2392.8

2745.2

PG

2681.9 ± 169.5

2451.7

3010.6

  1. SD Standard deviation; PG Placebo group; BG Betaine group; PHV Peak height velocity; BMR Basal metabolic rate