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Table 3 Power estimates for muscle imaging outcomes

From: Rationale, design, and protocol for the prevention of low back pain in the military (POLM) trial (NCT00373009)

Muscle measure (thickness)

TEP

CSEP

Power (16 Companies)

Transversus abdominus

1.5 (sd = 0.5)

2.0 (sd = 0.5)

100%

Erector spinae

31.0 (sd = 6.0)

34.5 (sd = 6.0)

90%

Multifidi (symmetry)

20.0% (sd = 6.0)

11.5% (sd = 6.0)

100%

  1. TEP, traditional exercise program; CSEP, core stabilization exercise program