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Table 1 Normalized values (%) for dominant and non-dominant leg (mean ± SD), Inter-limb asymmetry in cm (ILA) (mean ± SD) and composite score (%) for dominant and non-dominant leg by field position in all categories

From: Exploring the Y-Balance-Test scores and inter-limb asymmetry in soccer players: differences between competitive level and field positions

Field position

Category

Dom leg

Ndom leg

ILA

CS

AN

PM

PL

AN

PM

PL

AN

PM

PL

Dom–Ndom

GK

           
 

U16

68.4 ± 7.7

104.7 ± 11.3

99.7 ± 9.0

69.2 ± 8.9

108. 7 ± 12.6

105.5 ± 8.3

4.4 ± 1.9

11.8 ± 5.9

5.2 ± 5.0

90.5–94.4

 

U19

71.2 ± 7.6

110.4 ± 10.3

98.9 ± 16.3

70.6 ± 9.8

110.9 ± 13.5

105.3 ± 16.7

3.6 ± 4.0

4.1 ± 3.4

12.3 ± 11.6

93.5–95.6

 

Amateur

104.0 ± 1.2

106.7 ± 5.3

107.7 ± 6.8

104.5 ± 0.4

106.7 ± 5.4

107.9 ± 9.7

0.0 ± 0.0

0.5 ± 0.7

1.5 ± 0.7

106.1–106.4

 

SPRO

102.9 ± 4.1

118.2 ± 3.1

118.9 ± 18.6

103.3 ± 1.9

119.6 ± 6.6

118.5 ± 24.6

1.5 ± 0.7

2.5 ± 2.1

4.0 ± 0.0

113.3–113.8

 

PRO

62.3 ± 10.6

115.4 ± 4.6

114.0 ± 5.1

62.5 ± 5.6

118.6 ± 2.2

119.3 ± 2.5

3.7 ± 3.5

1.0 ± 1.7

3.7 ± 3.8

97.2–100.1

DEF

           
 

U16

72.0 ± 9.2

110.5 ± 16.8

104.5 ± 9.43

71.9 ± 8.2

110.6 ± 13.8

105.8 ± 14.6

3.7 ± 2.8

6.3 ± 2.6

6.4 ± 4.5

95.7–96.1

 

U19

69.7 ± 7.9

105.4 ± 14.4

100.3 ± 6.2

71.2 ± 6.4

107.6 ± 9.3

99.4 ± 10.6

5.1 ± 2.9

8.7 ± 8.5

7.3 ± 4.3

91.8–92.7

 

Amateur

105.0 ± 9.3

123.2 ± 4.1

121.1 ± 3.8

104.7 ± 8.4

127.4 ± 3.6

122.3 ± 8.7

2.7 ± 2.2

4.7 ± 4.8

4.2 ± 2.4

116.4–118.1

 

SPRO

104.4 ± 10.9

127.4 ± 15.3

127.6 ± 21.8

108.7 ± 9.2

133.4 ± 13.3

136.2 ± 15.2

3.4 ± 2.1

6.2 ± 3.6

7.8 ± 9.5

119.8–126.1

 

PRO

63.1 ± 7.6

114.3 ± 7.2

114.6 ± 4.6

64.4 ± 4.7

117.0 ± 6.6

114.0 ± 4.7

4.0 ± 3.6

1.0 ± 1.1

2.5 ± 1.3

97.3–98.5

CEN-B

           
 

U16

68.7 ± 13.0

109.1 ± 13.0

102.7 ± 10.4

67.5 ± 11.3

106.5 ± 12.1

102.5 ± 13.4

2.7 ± 2.9

3.7 ± 3.5

3.3 ± 2.6

93.5–92.1

 

U19

69.3 ± 3.8

103.6 ± 17.0

100.6 ± 15.2

70.4 ± 5.4

106.5 ± 14.1

103.1 ± 12.9

2.4 ± 1.6

3.9 ± 2.8

6.9 ± 6.9

91.2–93.4

 

Amateur

88.0 ± 10.1

110.2 ± 10.8

111.5 ± 7.3

93.0 ± 8.6

107.0 ± 13.3

112.3 ± 8.3

9.0 ± 6.2

5.8 ± 2.9

3.0 ± 2.5

103.2–104.1

 

SPRO

104.4 ± 11.4

118.1 ± 11.7

122.4 ± 6.7

105.1 ± 9.4

122.0 ± 10.4

124.5 ± 7.3

2.7 ± 1.5

3.3 ± 2.9

5.0 ± 5.0

115.0–117.2

 

PRO

61.1 ± 9.3

114.8 ± 3.9

113.9 ± 8.1

58.4 ± 11.3

121.2 ± 2.6

115.7 ± 1.8

4.0 ± 3.6

7.0 ± 4.6

3.3 ± 4.9

96.6–98.4

MID

           
 

U16

69.8 ± 8.2

105.8 ± 9.0

101.8 ± 10.2

69.7 ± 8.6

108.0 ± 8.7

100.0 ± 13.5

2.6 ± 2.1

2.9 ± 2.8

6.1 ± 6.3

92.5–92.6

 

U19

67.8 ± 7.1

106.9 ± 11.3

101.9 ± 11.4

66.6 ± 9.0

108.6 ± 12.3

102.9 ± 12.3

3.7 ± 2.8

4.8 ± 4.4

5.8 ± 4.6

92.2–92.7

 

Amateur

105.0 ± 15.3

114.1 ± 17.9

112.7 ± 12.6

108.8 ± 10.3

114.8 ± 18.7

116.3 ± 10.1

5.8 ± 6.3

10.2 ± 9.7

4.0 ± 4.1

110.6–113.3

 

SPRO

106.1 ± 5.2

130.1 ± 4.1

135.8 ± 4.6

112.1 ± 4.0

134.6 ± 5.2

135.4 ± 6.0

5.2 ± 2.2

4.0 ± 2.0

3.2 ± 2.6

124.0–127.4

 

PRO

59.2 ± 6.4

111.1 ± 12.4

107.9 ± 10.1

59.9 ± 6.9

111.1 ± 10.8

105.3 ± 9.2

4.2 ± 2.2

4.8 ± 3.1

5.5 ± 4.0

92.8–92.1

WG

           
 

U16

79.8 ± 12.5

102.5 ± 10.7

104.4 ± 9.1

76.2 ± 8.2

107.5 ± 11.1

100.4 ± 4.4

4.0 ± 6.5

8.5 ± 4.1

5.3 ± 5.2

95.6–94.7

 

U19

71.1 ± 6.0

108.3 ± 9.8

102.9 ± 12.6

71.1 ± 5.7

107.9 ± 8.1

106.4 ± 7.9

3.2 ± 2.5

4.2 ± 4.6

6.0 ± 6.3

94.1–95.1

 

Amateur

106.1 ± 21.8

115.0 ± 18.3

111.8 ± 10.7

105.9 ± 18.7

111.7 ± 22.5

111.1 ± 9.8

1.5 ± 0.7

3.5 ± 3.5

0.0 ± 0.0

94.1–95.1

 

SPRO

109.8 ± 13.0

134.1 ± 10.6

136.2 ± 2.2

113.5 ± 9.9

136.1 ± 8.3

139.4 ± 12.7

3.0 ± 2.6

5.0 ± 5.0

7.3 ± 2.5

126.7–129.7

 

PRO

62.1 ± 3.6

118.6 ± 4.1

120.9 ± 2.5

61.4 ± 4.7

116.0 ± 5.2

118.2 ± 4.4

2.0 ± 0.8

1.7 ± 1.7

1.7 ± 1.7

100.5–98.5

FW

           
 

U16

70.9 ± 8.1

106.2 ± 6.3

107.5 ± 11.6

71.5 ± 8.6

107.6 ± 10.3

106.3 ± 9.5

2.7 ± 1.9

4.5 ± 4.1

6.0 ± 4.9

94.8–93.5

 

U19

69.6 ± 7.4

108.5 ± 8.6

101.2 ± 10.0

71.2 ± 8.6

108.3 ± 10.8

98.5 ± 10.6

1.8 ± 2.6

4.5 ± 3.7

6.3 ± 4.7

93.1–92.6

 

Amateur

110.9 ± 16.8

117.0 ± 13.5

119.2 ± 15.1

104.8 ± 15.6

116.5 ± 9.9

110.0 ± 8.5

5.3 ± 8.4

6.0 ± 2.0

12.0 ± 9.5

115.7–110.4

 

SPRO

112.3 ± 2.8

125.2 ± 19.4

135.4 ± 28.9

112.6 ± 9.7

122.1 ± 18.3

134.7 ± 13.3

4.0 ± 0.0

2.5 ± 0.7

9.0 ± 0.0

124.3–123.1

 

PRO

64.3 ± 8.5

117.7 ± 12.6

113.1 ± 8.5

65.7 ± 7.1

119.9 ± 11.6

118.4 ± 8.7

1.7 ± 1.1

3.7 ± 0.6

4.3 ± 0.6

98.4–101.4

  1. Data is presented as mean ± SD. The units are: % for AN, PM and PL normalized values; % for composite score (CS); cm for Inter-limb asymmetry (ILA)