Control group

Injured group

n

M ± SD

n

M ± SD

p

Age

125

13.3 ± 0.7

10

13.4 ± 0.7

.486

Years of baseball experience

125

3.9 ± 2.3

9

4.4 ± 2.1

.477

The age of starting baseball

125

9.4 ± 2.3

9

9.0 ± 2.2

.604

Height

125

160.2 ± 7.7

9

164.9 ± 7.4

.080

Weight

124

48.7 ± 7.6

9

55.6 ± 13.3

.014

Shoulder joint external rotation-throwing side

66

114.1 ± 9.9

3

115.0 ± 4.6

.873

Shoulder joint external rotation-not throwing side

66

112.7 ± 9.8

3

113.7 ± 2.9

.861

Shoulder joint internal rotation-throwing side

66

29.2 ± 10.4

3

34.0 ± 12.2

.441

Shoulder joint internal rotation-not throwing side

66

35.3 ± 10.2

3

34.0 ± 10.6

.831

Shoulder joint horizontal adduction-throwing side

66

100.9 ± 4.6

3

104.3 ± 3.2

.209

Shoulder joint horizontal adduction-not throwing side

66

107.9 ± 5.3

3

105.7 ± 1.2

.479

Hip joint external rotation-throwing side

66

59.3 ± 8.9

3

63.3 ± 10.7

.450

Hip joint external rotation-not throwing side

66

57.1 ± 9.1

3

62.7 ± 10.5

.307

Hip joint internal rotation-throwing side

66

29.8 ± 7.8

3

26.0 ± 8.7

.421

Hip joint internal rotation-not throwing side

66

27.6 ± 9.5

3

22.7 ± 9.3

.384

Heal buttock distance-throwing side

66

4.4 ± 4.8

3

5.3 ± 3.3

.740

Heal buttock distance-not throwing side

66

4.1 ± 4.7

3

3.5 ± 1.6

.825

Long seat type body anteflexion

66

41.2 ± 6.3

3

44.2 ± 8.1

.428