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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