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Table 2 Average (standard deviations in parenthesis) number of muscles for which a response to quick force release was detected.

From: The effects of a three-week use of lumbosacral orthoses on trunk muscle activity and on the muscular response to trunk perturbations

  Number of Muscles Shutting Off
  Extension Flexion Lateral Bending
  No LSO# LSO# No LSO# LSO# No LSO# LSO#
Day 0 1.6 (0.8) 1.6 (0.6) 1.3 (1.1) 1.6 (1.4) 0.9 (0.6) 1.6 (0.8)
Day 7 1.5 (0.8) 1.8 (0.9) 1.7 (1.5) 1.8 (1.1) 1.2 (0.7) 1.9 (1.0)
Day 21 1.8 (1.1) 2.2 (0.8) 1.6 (1.0) 2.0 (1.1) 1.5 (0.7) 1.4 (0.9)
Average 1.6 (0.9) 1.9 (0.8) 1.5 (1.2) 1.8 (1.2) 1.2 (0.7) 1.6 (0.9)
  Number of Muscles Shutting On
  Extension Flexion Lateral Bending
  No LSO LSO No LSO LSO No LSO LSO
Day 0 5.3 (1.6) 5.7 (0.3) 4.7 (1.5) 4.8 (0.7) 4.8 (1.5) 5.2 (0.6)
Day 7 # 5.9 (0.2) 6.0 (0.1) 4.8 (1.7) 5.1 (0.7) 5.2 (0.8) 5.0 (0.8)
Day 21 5.6 (0.6) 5.5 (0.5) 5.0 (0.8) 5.0 (0.6) 4.9 (0.9) 4.6 (1.0)
Average 5.6 (1.0) 5.7 (0.4) 4.9 (1.3) 5.0 (0.7) 5.0 (1.1) 4.9 (0.8)
  1. #denotes a statistical significance at P < 0.05 level.