Table 1.
Males | Females | |||||||
---|---|---|---|---|---|---|---|---|
Characteristic | Controls | Jumpers | Baseball | Controls | Softball | |||
n | 27 | 16 | 21 | 15 | 22 | |||
Demographics | ||||||||
Age (yr) | 23.7 ± 3.6JB | 21.1 ± 2.1CB | 27.5 ± 2.6CJ | 22.5 ± 3.3S | 20.6 ± 1.3C | |||
Dominant leg (R/L) | 2/25 | 4/12 | 7/14 | 0/15 | 2/20 | |||
Estimated age of adolescent growth spurt (yr) | 13.3 ± 2.1 | 13.8 ± 1.8 | 14.5 ± 1.5 | 12.6 ± 1.7 | 12.9 ± 1.1 | |||
Jumping sport (long:high jump) | ― | 12:10‡ | ― | ― | ― | |||
Age started competing (yr) | ― | 13.6 ± 1.5B | 7.7 ± 2.7J | ― | 9.0 ± 1.9 | |||
Years competing before adolescent growth spurt (yr) | ― | 0.3 ± 2.1B | 8.6 ± 2.0J | ― | 5.5 ± 2.0 | |||
Total years competing (yr) | ― | 6.3 ± 2.7B | 21.4 ± 4.2J | ― | 13.2 ± 2.9 | |||
Whole-body anthropometry | ||||||||
Height (m) | 1.82 ± 0.08B | 1.83 ± 0.07B | 1.88 ± 0.05CJ | 1.64 ± 0.07S | 1.73 ± 0.06C | |||
Mass (kg) | 75.7 ± 15.9B | 78.3 ± 6.9B | 96.9 ± 8.7CJ | 65.6 ± 13.2S | 76.1 ± 12.6C | |||
Body mass index (kg/m2) | 22.8 ± 3.8B | 23.5 ± 1.9B | 27.5 ± 2.5CJ | 24.3 ± 4.4 | 25.2 ± 3.6 | |||
Areal bone mineral density (g/cm2)# | 1.23 ± 0.09JB | 1.38 ± 0.09C | 1.35 ± 0.14C | 1.25 ± 0.11 | 1.18 ± 0.06 | |||
Lean mass (kg)§ | 55.5 ± 10.0B | 59.2 ± 5.1B | 66.1 ± 5.8CJ | 50.6 ± 6.3 | 48.8 ± 1.0 | |||
Fat mass (%) | 19.3 ± 6.8J | 14.0 ± 2.0CB | 21.9 ± 2.8J | 29.9 ± 6.8 | 31.2 ± 6.5 |
Data are mean ± SD, except for frequencies. Superscript capital letters indicate the data significantly differs from CON (C), JMP (J), BB (B) and SB (S)
Six jumpers competed in both jumping sports
Values corrected for whole-body lean mass
Values corrected for height