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Table 3 Correlations between measurement changes and their significance in all participants

From: Effects of preoperative low-intensity training with slow movement on early quadriceps weakness after total knee arthroplasty in patients with knee osteoarthritis: a retrospective propensity score-matched study

Variables Knee swelling
(1 cm) (%)
Thigh swelling
(%)
ΔKnee pain during the QST (mm) QW
(%)
ΔKnee pain during the TUG (mm)
r (p) r (p) r (p) r (p) r (p)
Thigh swelling (%) 0.84 (0.00)
ΔKnee pain during the QST (mm) 0.15 (0.05) 0.19 (0.01)
QW (%) −0.27 (0.00) −0.26 (0.00) −0.23 (0.00)
ΔKnee pain during the TUG (mm) 0.10 (0.19) 0.08 (0.32) 0.30 (0.00) −0.10 (0.17)
ΔTUG (%) 0.23 (0.00) 0.23 (0.00) 0.01 (0.93) −0.40 (0.00) 0.02 (0.84)
  1. Note. N = 173, male = 44. r stands for Spearman correlation coefficients. The Δ symbol indicates pre- and postoperative measurement changes
  2. Abbreviations: QW quadriceps weakness, QST quadriceps strength test, TUG timed up and go test