Fig. 4From: Understanding regional activation of thoraco-lumbar muscles in chronic low back pain and its relationship to clinically relevant domainsDescriptors of EMG amplitude distribution and side asymmetry indices. Top row: mean values and standard deviation for each task (APT, anterior pelvic tilt; G1, loading response phase of gait; G2, pre-swing phase of gait; SS1, stand up; SS2, sit down; SF, shoulder flexion; TF, trunk flexion) and group (LBP and control), left and right side averaged. Bottom row: side asymmetry indices by task and groupBack to article page