Table 2. Comparisons between GIRD and non-GIRD pitchers. Data are means (±1 SD).
Measurement GIRD Non-GIRD Difference p value
D HR (degrees) 33.6 (8.6) 25.6 (12.9) 8 .08
ND HR (degrees) 18.1 (8.9) 19.0 (10.1) .9 .36
Difference HR (degrees) 15.5 (11.2) 6.6 (8.6) 8.9 .029*
D cross body adduction (cm) 12.30 (3.3) 8.75 (5.2) 3.6 .07
ND cross body adduction (cm) 8.7 (4.8) 7.5 (4.6) .9 .38
Difference cross body adduction (cm) 3.60 (4.2) 1.25 (2.9) 2.40 .07
D posterior laxity (mm) 2.1 (.5) 2.0 (.7) .1 .47
ND posterior laxity (mm) 2.20 (.8) 2.17 (.6) .03 .46
Difference posterior laxity (mm) .10 (.4) .03 (.5) .07 .55
* Denotes statistical significance at p < 0.05.