Figure 4.

Spinal manipulation did not alter the amplitude of the motor evoked potential (left) or short-latency stretch reflex (right) recorded from the erector spinae muscles in patients with chronic low back pain (LBP) or in asymptomatic controls.

Clark et al. BMC Musculoskeletal Disorders 2011 12:170   doi:10.1186/1471-2474-12-170
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