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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.