naa a22 4500 528785974 20180924065519.0 cr unu---uuuuu 180924e20121116xx s 000 0 eng 10.3929/ethz-b-000070609 doi 10.1371/journal.pone.0050135 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/70609 Velocity of Lordosis Angle during Spinal Flexion and Extension [Elektronische Daten] [Tobias Consmüller, Antonius Rohlmann, Daniel Weinland, Claudia Druschel, Georg N. Duda, William R. Taylor] PLoS ONE Open access ethresearch The importance of functional parameters for evaluating the severity of low back pain is gaining clinical recognition, with evidence suggesting that the angular velocity of lordosis is critical for identification of musculoskeletal deficits. However, there is a lack of data regarding the range of functional kinematics (RoKs), particularly which include the changing shape and curvature of the spine. We address this deficit by characterising the angular velocity of lordosis throughout the thoracolumbar spine according to age and gender. The velocity of lumbar back shape changes was measured using Epionics SPINE during maximum flexion and extension activities in 429 asymptomatic volunteers. The difference between maximum positive and negative velocities represented the RoKs. The mean RoKs for flexion decreased with age; 114°/s (20-35 years), 100°/s (36-50 years) and 83°/s (51-75 years). For extension, the corresponding mean RoKs were 73°/s, 57°/s and 47°/s. ANCOVA analyses revealed that age and gender had the largest influence on the RoKs (p<0.05). The Epionics SPINE system allows the rapid assessment of functional kinematics in the lumbar spine. The results of this study now serve as normative data for comparison to patients with spinal pathology or after surgical treatment. Creative Commons Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0 ethresearch Consmüller Tobias joint author Rohlmann Antonius joint author Weinland Daniel joint author Druschel Claudia joint author Duda Georg N. joint author Taylor William R. joint author PLoS ONE Public Library of Science 7 (11), p. e50135 1932-6203 http://hdl.handle.net/20.500.11850/70609 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/70609 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- Consmüller Tobias joint author ETHRESEARCH 700 1- Rohlmann Antonius joint author ETHRESEARCH 700 1- Weinland Daniel joint author ETHRESEARCH 700 1- Druschel Claudia joint author ETHRESEARCH 700 1- Duda Georg N. joint author ETHRESEARCH 700 1- Taylor William R. joint author ETHRESEARCH 773 0- PLoS ONE Public Library of Science 7 (11), p. e50135 1932-6203 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access