. 2018 Feb;53(2):144–159. doi: 10.4085/1062-6050-334-16

Table 3B. .

Between-Groups Comparisons and Cohen d Effect Sizes of Sagittal-Plane Knee-Joint Moments

Study	Task	ACL Reconstruction Sample Size	Comparison Group Sample Size	Mean ± SD			Landing Phase	Cohen d Effect Size (95% CI)	Weighted Effect Size
Study	Task	ACL Reconstruction Sample Size	Comparison Group Sample Size	ACL Reconstruction-Limb Internal Knee-Extension Moment	ACL Contralateral-Limb Internal Knee-Extension Moment	Healthy Internal Knee-Extension Moment	Landing Phase	Cohen d Effect Size (95% CI)	Weighted Effect Size
Goerger et al⁵⁵ (2014)	Double	12	39	0.16 ± 0.04	NA	0.20 ± 0.04	Peak	−0.81 (−1.48, −0.14)	−7.03
Decker et al⁵⁰ (2002)	Double	11	11	12.77 ± 3.21	NA	17.47 ± 4.97	Peak	−1.12 (−2.02, −0.22)	−5.39
Combined pooled effect size (95% CI)									−0.92 (−1.45, −0.38)
Dai et al⁴⁹ (2014)	Double	23	23	0.10 ± 0.03	0.14 ± 0.03	NA	Peak	−1.23 (−1.86, −0.60)	−11.93
Combined Pooled effect size and 95% CI									NA
Webster et al⁶⁷ (2012)	Single	14	11	1.09 ± 0.34	NA	1.06 ± 0.32	Peak	0.09 (−0.70, 0.88)	0.56
Ortiz et al⁶⁰ (2008)	Single	14	15	3.50 ± 0.69	NA	3.00 ± 0.55	Peak	0.80 (0.05, 1.56)	5.41
Ernst et al⁵³ (2000)	Single	20	20	1.30 ± 0.59	NA	1.91 ± 0.45	Peak	−1.16 (−1.83, −0.49)	−10.00
Combined pooled effect size (95% CI)									−0.10 (−1.27, 1.07)
Webster et al⁶⁷ (2012)	Single	14	14	1.09 ± 0.34	1.30 ± 0.38	NA	Peak	−0.58 (−1.34, 0.17)	−0.54
Orishimo et al⁶¹ (2010)	Single	13	13	3.30 ± 1.70	3.50 ± 1.10	NA	Peak	−0.14 (−0.91, 0.63)	−0.13
Ernst et al⁵³ (2000)	Single	20	20	1.30 ± 0.59	2.09 ± 0.49	NA	Peak	−1.46 (−2.15, −0.76)	−1.37
Combined pooled effect size (95% CI)									−0.74 (−1.51, −0.03)

Abbreviations: ACL, anterior cruciate ligament; CI, confidence interval; double, double-limb landing; NA, not applicable; single, single-limb landing.