Table 2 Analysis grouped by defensive position as pitchers
Pitchers | Non-pitchers | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
n | Mean | SD | n | Mean | SD | P | Min | Max | 95% Confidence level | |||
Age (years) | 222 | 16.5 | 0.9 | 310 | 16.4 | 0.9 | 0.17 | 13 | 19 | -0.047 | 0.267 | |
Official baseball experience (years) | 222 | 7.5 | 2.5 | 310 | 7.2 | 2.5 | 0.21 | 1 | 9 | -0.161 | 0.715 | |
Started age (years) | 221 | 8.96 | 2.5 | 310 | 9.1 | 2.4 | 0.417 | 7 | 14 | -0.605 | 0.251 | |
**Height (cm) | 223 | 175.8 | 6.1 | 310 | 172.4 | 5.6 | < 0.001 | 158 | 192 | 2.422 | 4.409 | |
BMI (kg/m2) | 223 | 23.0 | 2.7 | 310 | 23.4 | 3.0 | 0.07 | 17.4 | 35.1 | -0.947 | 0.040 | |
Shoulder total rotation angle (o) | 221 | 159.0 | 27.0 | 299 | 162.0 | 25.7 | 0.195 | 135 | 185 | -7.596 | 1.554 | |
Shoulder ER (o) | 221 | 104.8 | 30.3 | 299 | 105.7 | 28.5 | 0.74 | 65 | 100 | -6.031 | 4.274 | |
Shoulder IR (o) | 221 | 54.1 | 25.3 | 299 | 56.3 | 27.1 | 0.36 | 55 | 105 | -6.734 | 2.448 | |
**Elbow total arm angle (o) | 196 | 135.6 | 9.3 | 278 | 132.7 | 9.4 | < 0.001 | 110 | 145 | 1.217 | 4.643 | |