Journal of sport rehabilitation
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Individuals with low back pain (LBP) have reduced function of the transversus abdominis (TrA) and lumbar multifidus (LM) muscles. Biofeedback during exercise may increase the ability to contract the TrA and LM muscles compared with exercise alone. ⋯ TrA PAR increased after a single session of exercises, whereas no thickness changes occurred in LM.