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Table 3 Kinematic and kinetic differences in female recreational 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 5.0 ± 1.7 6.2 ± 2.3* 6.2 ± 2.1** 5.9 ± 2.2*** 0.034
Knee flexion angle at IC (Deg.) 35.0 ± 7.3 33.5 ± 6.9 30.4 ± 6.2 32.3 ± 6.3 0.330
Peak knee flexion angle (Deg.) 95.9 ± 11.0 101.6 ± 12.4* 108.2 ± 14.9** 104.2 ± 12.5*** < 0.01
Knee abduction angle at IC (Deg.) − 3.7 ± 4.4 − 2.0 ± 5.3* − 2.2 ± 3.6** − 3.2 ± 4.8 0.047
Peak knee abduction angle (Deg.) 2.4 ± 5.7 2.7 ± 4.8 2.6 ± 3.8 3.3 ± 6.0 0.833
Tibial internal rotation angle at IC (Deg.) − 10.8 ± 11.0 − 9.6 ± 10.9 − 11.4 ± 12.6 − 10.7 ± 12.0 0.365
Peak tibial internal rotation angle (Deg.) − 0.39 ± 8.0 1.5 ± 8.5 0.2 ± 9.1 − 1.1 ± 8.9 0.122
Peak knee flexion moment within 40 ms from IC (Nm/kg) 1.78 ± 0.55 1.54 ± 0.45 1.26 ± 0.52** 1.31 ± 0.31*** < 0.01
Peak knee abduction moment within 40 ms from IC (Nm/kg) 0.21 ± 0.25 0.41 ± 0.24* 0.21 ± 0.17 0.23 ± 0.14 0.017
Peak tibial internal rotation moment within 40 ms from IC (Nm/kg) 0.25 ± 0.17 0.19 ± 0.11 0.28 ± 0.19 0.20 ± 0.18 0.460
  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