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Table 3 Comparison of the postural parameters (secondary outcome) before and after intervention

From: Immediate effects of a lumbar spine manipulation on pain sensitivity and postural control in individuals with nonspecific low back pain: a randomized controlled trial

OutcomeGroupMean pre-
(standard deviation)
Mean post-
(standard deviation)
Post-Pre
(95% IC)
Area of the ellipse (cm2)Control2.2 (± 1.6)1.7 (± 1.3)−0.5
(−0.7; 1.7)
Intervention1.1 (± 0.9)1.1 (± 0.8)0.0
(−0.7; 0.7)
COP displacement (cm)Control44.3 (± 10.2)42.5 (± 7.9)−1.8
(−9.5; 6.0)
Intervention40.7 (± 7.9)41.5 (± 8.0)0.8
(−5.9; 7.6)
COP RMS Velocity (cm/s)Control2.7 (± 0.3)2.7 (± 0.4)0.0
(−0.3; 0.3)
Intervention2.5 (± 0.3)2.5 (± 0.3)0.0
(−0.2; 0.2)
Difference between COP and COPG in AP (cm)Control1.0 (± 0.7)1.2 (± 0.7)0.2
(−0.3; 0.8)
Intervention1.0 (± 0.6)0.8 (± 0.4)−0.2
(− 0.7; 0.2)
Difference between COP and COPG in ML (cm)Control0.6 (± 0.6)0.8 (± 0.8)0.2
(−0.5; 0.8)
Intervention0.6 (± 0.4)0.5 (± 0.3)−0.1
(− 0.4; 0.2)
  1. COP Center Of Pressure, RMS Root Mean Square, COPG Center Of Projected Gravity, AP Anterior-Posterior, ML Medium-Lateral