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Table 1 Participant characteristics according to groups at baseline

From: Effects of resistance training on serum 25(OH) D concentrations in young men: a randomized controlled trial

Variable Resistance training group (RT) (n = 9) Non-exercise control group (CON) (n = 9)
Age (y) 24.2 ± 3.1 26.7 ± 6.2
Height (cm) 1.74 ± 0.03 1.75 ± 0.06
Weight (kg) 68.5 ± 9.7 68.7 ± 7.6
BMI (kg/m2) 22.5 ± 2.9 22.3 ± 1.9
FFM (kg) 54.2 (49.2 –56.4 ) 57.5 (51.1 –58.8 )
Muscle mass (kg) 51.4 (46.6 –53.3 ) 54.9 (48.4 –55.8 )
Body fat percentage (%) 21.9 ± 6.9 18.8 ± 6.0
Arms fat percentage (%) 18.7 ± 7.1 14.4 ± 5.1
Legs fat percentage (%) 20.5 ± 5.6 18.1 ± 5.2
Trunk fat percentage (%) 25.1 ± 8.3 21.6 ± 7.3
BMD (g/cm2) 1.16 ± 0.07 1.18 ± 0.07
25(OH) D (nmol/L) 26.9 ± 4.7 26.2 ± 4.1
iPTH (pg/mL) 54.9 ± 19.8 44.6 ± 23.8
MVPA (min/day) 69.8 ± 32.2 65.8 ± 16.3
Sun exposure (min/day) 40.0 ± 27.9 50.0 ± 30.7
  1. Values are presented as mean ± standard deviation, median (interquartile range), or percentage
  2. Student t test (for normally distributed variables) or the Mann-Witney U test (for nonnormally distributed variables) was used to evaluate the differences. Significant difference, P < 0.05
  3. BMI body mass index, FFM fat free mass, 25(OH) D 25-hydroxyvitamin D, iPTH intact parathyroid hormone, MVPA moderate-vigorous physical activity