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Table 2 Outcome Scores (N = 54)a

From: Cross-sectional study on relationships between physical function and psychological readiness to return to sport after anterior cruciate ligament reconstruction

 

Total (N = 54)

ACL-RSI over 60 points (N = 31)

ACL-RSI under 60 points (N = 23)

P

Effect size

Knee extension strength (60 deg/s)

Involved limb, Nm/kg

2.07 ± 0.39 [1.96–2.18]

2.13 ± 0.41 [1.98–2.28]

1.98 ± 0.36 [1.83–2.14]

0.164

0.25

Uninvolved limb, Nm/kg

2.49 ± 0.47 [2.37–2.62]

2.57 ± 0.46 [2.40–2.74]

2.39 ± 0.46 [2.19–2.59]

0.167

0.40

LSI, %

83.74 ± 10.84 [80.78–86.70]

83.53 ± 10.23 [79.77–87.28]

84.03 ± 11.83 [78.91–89.15]

0.867

0.05

Knee flexion strength (60 deg/s)

Involved limb, Nm/kg

1.08 ± 0.25 [1.01–1.14]

1.12 ± 0.21 [1.05–1.20]

1.01 ± 0.28 [0.89–1.13]

0.098

0.40

Uninvolved limb, Nm/kg

1.29 (0.42) [1.17–1.40]

1.26 (0.34) [1.23–1.45]

1.11 (0.30) [0.98–1.45]

0.026*

−0.30

LSI, %

86.59 ± 16.55 [82.07–91.10]

85.62 ± 14.29 [80.38–90.86]

87.89 ± 19.45 [79.48–96.30]

0.638

0.14

HQ ratio (60 deg/s)

Involved limb, %

52.26 ± 9.15 [49.76–54.76]

53.35 ± 8.40 [50.27–56.43]

50.79 ± 10.08 [46.43–55.15]

0.315

0.28

Uninvolved limb, %

49.92 (9.50) [48.12–54.70]

52.34 (6.64) [48.92–56.38]

46.46 (10.27) [43.57–55.91]

0.026*

−0.30

Knee extension strength (180 deg/s)

In involved limb, Nm/kg

1.45 ± 0.26 [1.37–1.52]

1.50 ± 0.24 [1.41–1.59]

1.38 ± 0.27 [1.26–1.49]

0.089

0.40

Uninvolved limb, Nm/kg

1.78 ± 0.31 [1.69–1.86]

1.82 ± 0.29 [1.71–1.92]

1.72 ± 0.33 [1.57–1.87]

0.252

0.33

LSI, %

80.42 (9.66) [79.43–83.94]

80.69 (10.53) [79.55–85.83]

78.66 (10.63) [76.97–83.71]

0.447

−0.10

Knee flexion strength (180 deg/s)

Involved limb, Nm/kg

0.84 ± 0.22 [0.78–0.90]

0.90 ± 0.18 [0.83–0.96]

0.77 ± 0.24 [0.67–0.88]

0.040*

0.50

Uninvolved limb, Nm/kg

0.97 ± 0.21 [0.91–1.02]

1.00 ± 0.19 [0.94–1.07]

0.91 ± 0.22 [0.82–1.01]

0.116

0.50

LSI, %

87.32 ± 13.48 [83.64–91.00]

89.44 ± 9.43 [85.98–92.90]

84.46 ± 17.37 [76.94–91.97]

0.222

0.37

HQ ratio (180 deg/s)

Involved limb, %

58.24 ± 10.37 [55.41–61.07]

60.16 ± 9.03 [56.85–63.47]

55.66 ± 11.65 [50.62–60.69]

0.116

0.44

Uninvolved limb, %

54.50 ± 7.62 [52.42–56.58]

55.57 ± 7.98 [52.65–58.50]

53.04 ± 7.02 [50.01–56.08]

0.232

0.34

Leg anterior reach distance

Involved limb, % lower limb length

69.8 ± 6.5 [68.0–71.6]

70.3 ± 6.7 [67.8–72.8]

69.1 ± 6.3 [66.4–71.9]

0.524

0.18

Uninvolved limb, % lower limb length

72.0 ± 6.4 [70.2–73.8]

71.5 ± 7.1 [68.9–74.1]

72.7 ± 5.5 [70.4–75.1]

0.488

0.19

LSI, %

97.0 ± 4.7 [95.7–98.3]

98.5 ± 3.8 [97.1–99.8]

95.1 ± 5.3 [92.8–97.4]

0.008*

0.76

Anterior SLH distance

Involved limb, % height

62.3 ± 15.1 [58.2–66.4]

65.4 ± 14.7 [60.1–70.8]

58.1 ± 14.9 [51.7–64.5]

0.077

0.49

Uninvolved limb, % height

71.5 ± 14.5 [67.7–75.7]

73.0 ± 16.2 [67.1–79.0]

70.0 ± 12.0 [64.7–75.2]

0.449

0.21

LSI, %

89.6 (16.5) [83.6–90.8]

90.4 (13.1) [86.7–93.9]

86.5 (25.5) [76.1–89.9]

0.139

−0.20

Lateral SLH distance

Involved limb, % height

47.6 ± 12.6 [44.1–51.0]

50.6 ± 12.1 [46.2–55.1]

43.4 ± 12.4 [38.1–48.8]

0.036*

0.59

Uninvolved limb, % height

56.1 ± 12.0 [52.8–59.3]

57.6 ± 13.1 [52.8–62.4]

54.0 ± 10.3 [49.5–58.4]

0.279

0.30

LSI, %

84.5 ± 13.3 [80.9–88.1]

88.3 ± 11.4 [84.1–92.5]

79.3 ± 14.2 [73.2–85.5]

0.013*

0.71

Medial SLH distance

Involved limb, % height

52.1 ± 13.7 [48.4–55.9]

56.4 ± 13.8 [51.3–61.4]

46.4 ± 11.7 [41.4–51.5]

0.007*

0.77

Uninvolved limb, % height

58.4 ± 12.4 [55.0–61.8]

60.6 ± 13.6 [55.6–65.6]

55.6 ± 10.2 [51.2–60.0]

0.146

0.41

LSI, %

89.5 (16.1) [85.1–92.9]

93.2 (13.5) [89.0–97.7]

82.9 (19.1) [76.5–89.8]

0.018*

−0.32

Subjective running ability, %

80.0 (30.0) [79.5–87.5]

95.0 (20.0) [85.3–93.9]

80 (10.0) [69.1–81.4]

0.001*

−0.47

Tampa scale for kinesiophobia

35.6 ± 6.5 [33.9–37.4]

33.5 ± 6.2 [31.2–35.7]

38.5 ± 5.9 [36.0–41.1]

0.004*

0.82

  1. aData are reported as mean ± SD or median (interquartile range) [95% confidence interval]. LSI Limb symmetry index; SLH Single-leg hop
  2. *Significance at P < 0.05