• Lene Christensen, Marit B Veierød, Nina K Vøllestad, Vidar E Jakobsen, Britt Stuge, Jan Cabri, and Hilde Stendal Robinson.
• Dept. of Interdisciplinary Health Sciences, Institute of Health and Society, University of Oslo, P. O. Box 1089, Blindern, 0317 Oslo, Norway. Electronic address: lene.christensen@medisin.uio.no.
• Clin Biomech (Bristol, Avon). 2019 Aug 1; 68: 45-52.

BackgroundWalking difficulties are common among pregnant women with pelvic girdle pain. This cross-sectional study investigated the influence of pelvic girdle pain, pregnancy and speed on spatiotemporal and trunk, pelvic and hip kinematics during gait in the 2nd trimester of pregnancy.MethodsThree-dimensional gait analysis at self-selected speed was performed in 25 pregnant women with pelvic girdle pain, 24 asymptomatic pregnant and 24 non-pregnant women. Linear mixed models were used to investigate between-group differences in gait variables. Adjustment for gait speed was included in the analysis. Correlations between speed and fear of movement, disability and pain were examined using Spearman correlation coefficient (rs).FindingsPregnant women with pelvic girdle pain walked 18% slower (estimated marginal means (95% confidence intervals) 1.18 (1.22, 1.24) meter/s) compared to asymptomatic pregnant women (1.44 (1.38, 1.50) meter/s) (P < 0.001). Moreover, with longer double limb support (5%, P = 0.04), shorter contralateral step length (3%, P = 0.03) and more restricted pelvic and hip kinematics (0.001 ≤ P ≤ 0.01) adjusted for speed. Only stance, double limb support and thoracic rotation (0.001 ≤ P ≤ 0.04) differed between asymptomatic pregnant and non-pregnant women. Speed was negatively correlated with fear of movement (rs = -0.63, P = 0.01) and disability (rs = -0.46, P = 0.03) in the pelvic girdle pain group.InterpretationGait is primarily influenced by pelvic girdle pain and less by pregnancy. Pregnant women with pelvic girdle pain walked slower and with a more rigid gait pattern compared to asymptomatic pregnant women, presumably related to altered load transfer. Our results may assist clinical evaluation of pelvic girdle pain, as well as direct future research.Copyright © 2019 The Authors. Published by Elsevier Ltd.. All rights reserved.

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