Figure 4
From: Author Correction: Postural adjustments impairments in elderly people with chronic low back pain

Raw and rectified 6 Hz low-pass filtered muscles activity of a typical participant of each group, recorded during one single trial. Vertical blue dashed line indicates muscles onset (t0). Muscle abbreviations: ST semitendinosus, RF rectus femoris, SOL soleous, TA tibialis anterior. Control participants’ anticipation compared with CLBP results.