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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