Back and hip extensor activities during trunk flexion/extension: Effects of low back pain and rehabilitation Ville Leinonen, BM, Markku Kankaanpää, MD, Olavi Airaksinen, DMSc, Osmo Hänninen, DMSc, PhD Archives of Physical Medicine and Rehabilitation Volume 81, Issue 1, Pages 32-37 (January 2000) DOI: 10.1016/S0003-9993(00)90218-1 Copyright © 2000 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions
Fig. 1 Determination of the muscle activation onsets. LP, lumbar paraspinal; GM, gluteus maximus; BF, biceps femoris muscles. Stick figures represent movement of body during flexion and extension. Archives of Physical Medicine and Rehabilitation 2000 81, 32-37DOI: (10.1016/S0003-9993(00)90218-1) Copyright © 2000 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions