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Table 2 Kinematic and kinetic differences between DL and NDL (mean ± S.D.)

From: Difference in leg asymmetry between female collegiate athletes and recreational athletes during drop vertical jump

 

Collegiate athletes

P valueb

Recreational athletes

P valuec

DL

NDL

DL

NDL

Knee flexion angle at IC (deg.)

33.0 ± 8.4

35.6 ± 8.3

0.005

35.5 ± 9.4

35.3 ± 11.2

0.868

Peak knee flexion angle at IC (deg.)

107 ± 12.9

109 ± 12.6

0.127

97.1 ± 12.6d

96.8 ± 13.0d

0.791

Knee abduction angle at IC (deg.)

− 2.1 ± 8.5

− 3.9 ± 6.8

0.143

− 4.8 ± 4.8

2.3 ± 4.9e

0.002

Peak knee abduction angle (deg.)

5.4 ± 11.8

1.5 ± 10.4

0.006

1.3 ± 7.2

6.3 ± 5.4

0.038

Knee internal rotation angle at IC (deg.)

− 7.6 ± 10.4

− 9.1 ± 9.1

0.400

− 12.4 ± 8.7

10.3 ± 8.2

< 0.001

Peak knee internal rotation angle (deg.)

4.4 ± 6.8

5.5 ± 6.7

0.557

0.0067 ± 7.0d

11.8 ± 5.4e

< 0.001

vGRF within 40 ms from IC (N)

1236 ± 629

1261 ± 366

0.827

1078 ± 314

1084 ± 445

0.953

PKFM within 40 ms from IC (Nm/kg)

1.69 ± 0.57

2.71 ± 0.88

< 0.001

1.67 ± 0.49

2.08 ± 0.87d

0.068

PKABDM within 40 ms from IC (Nm/kg)

0.36 ± 0.31

0.21 ± 0.36

0.827

0.17 ± 0.24d

0.38 ± 0.30

0.009

PKIRM within 40 ms from IC (Nm/kg)

0.16 ± 0.16

0.36 ± 0.39

0.675

0.22 ± 0.15

0.36 ± 0.39

0.175

  1. bValues obtained using the two-tailed paired t test in collegiate athletes
  2. cValues obtained using the two-tailed paired t test in recreational athletes
  3. dValues were significantly larger in collegiate athletes than in recreational athletes using the two-tailed unpaired t test
  4. eValues were significantly larger in recreational athletes than in collegiate athletes using the two-tailed unpaired t test