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Table 2 Kinematic and kinetic differences in female collegiate athletes (mean ± SD)

From: Fatigue and recovery have different effects on knee biomechanics of drop vertical jump between female collegiate and recreational athletes

 

Pre-FP DVJ

Post-FP first DVJ

Post-FP second DVJ

Post-FP third DVJ

P valuea

LESS score

4.7 ± 1.3

5.7 ± 1.6*

5.7 ± 1.6**

5.3 ± 1.8***

< 0.001

Knee flexion angle at IC (Deg.)

31.7 ± 9.0

33.0 ± 10.6

29.8 ± 12.5

29.0 ± 10.3

0.127

Peak knee flexion angle (Deg.)

101.7 ± 13.0

108.0 ± 11.8*

106.3 ± 12.3**

101.6 ± 11.7

< 0.01

Knee abduction angle at IC (Deg.)

0.7 ± 8.1

0.4 ± 10.6

0.4 ± 10.0

− 0.1 ± 9.6

0.949

Peak knee abduction angle (Deg.)

9.1 ± 11.3

9.1 ± 13.2

9.7 ± 13.0

8.4 ± 12.0

0.843

Tibial internal rotation angle at IC (Deg.)

− 3.6 ± 9.0

− 4.2 ± 9.6

− 5.7 ± 10.6

− 5.2 ± 10.0

0.293

Peak tibial internal rotation angle (Deg.)

4.2 ± 6.1

5.7 ± 7.8

4.6 ± 8.3

5.0 ± 8.2

0.585

Peak knee flexion moment within 40 ms from IC (Nm/kg)

1.71 ± 0.38

1.63 ± 0.56

1.40 ± 1.05

1.60 ± 0.50

0.639

Peak knee abduction moment within 40 ms from IC (Nm/kg)

0.53 ± 0.23

0.48 ± 0.37

0.49 ± 0.26

0.50 ± 0.29

0.918

Peak tibial internal rotation moment within 40 ms from IC (Nm/kg)

0.14 ± 0.15

0.17 ± 0.17

0.13 ± 0.10

0.11 ± 0.13

0.618

  1. IC initial contact, FP fatigue protocol, ms milliseconds, NS not significant
  2. *P < 0.05 between pre- and post-FP first DVJ
  3. **P < 0.05 between pre- and post-FP second DVJ
  4. ***P < 0.05 between pre- and post-FP third DVJ
  5. aValues obtained using repeated measures of analysis of variance among groups