Table 3 Analysis of elbow structural abnormalities of all players (pitchers and fielders)
Elbow structural abnormalities + | Elbow structural abnormalities - | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
n | Mean | SD | n | Mean | SD | P | Min | Max | 95% Confidence level | ||
Age (years) | 126 | 16.4 | 1.0 | 251 | 16.5 | 0.9 | 0.33 | 13 | 19 | -0.305 | 0.103 |
** Official baseball experience (years) | 126 | 7.4 | 2.5 | 251 | 6.6 | 2.2 | < 0.001 | 1 | 9 | 0.306 | 1.329 |
** Started age (years) | 125 | 8.9 | 2.3 | 251 | 9.8 | 2.1 | < 0.001 | 7 | 14 | -1.418 | -0.452 |
Height (cm) | 127 | 173.9 | 6.2 | 251 | 173.7 | 5.9 | 0.79 | 158 | 192 | -1.136 | 1.494 |
BMI (kg/m2) | 127 | 23.0 | 2.9 | 251 | 23.3 | 3.0 | 0.49 | 17.4 | 35.1 | -0.848 | 0.407 |
** Shoulder total rotation angle (o) | 126 | 155.1 | 27.8 | 242 | 164.1 | 29.3 | 0.01 | 135 | 185 | -15.25 | -2.800 |
Shoulder ER (o) | 126 | 100.4 | 33.4 | 240 | 102.3 | 32.1 | 0.59 | 65 | 100 | -9.105 | 5.163 |
** Shoulder IR (o) | 126 | 54.7 | 27.9 | 240 | 61.8 | 29.2 | 0.02 | 55 | 105 | -13.230 | -0.951 |
** Elbow total arm angle (o) | 114 | 134.3 | 8.5 | 212 | 136.4 | 8.2 | 0.03 | 110 | 145 | -4.001 | -0.154 |