Abstract
Understanding why falls during pregnancy occur at over 25% rate over gestation has clinical impacts on the health of pregnant individuals. Attention, proprioception, and perception of the environment are required to prevent trips and falls. This research aimed to understand how the changes to these neurocognitive processes control obstacle avoidance through gestation. Seventeen pregnant participants were tested five times in 6-week intervals. Participants walked an obstacle course (OC), and we analyzed the crossings over obstacles that were set to 10% of participants’ body height. Participants also performed an attentional network test (ANT: performance of specific components of attention), an obstacle perception task (OP: ability to visually define an obstacle and translate that to a body posture), and a joint position sense task (JPS: ability to recognize and recreate a joint position from somatosensation). In the OC task, average leading and trailing foot crossing heights significantly reduced by 13% and 23% respectively, with no change in variation, between weeks 13 and 31 of pregnancy, indicating an increased risk of obstacle contact during this time. The variability in minimum leading foot distances from the obstacle was correlated with all three neurocognition tasks (ANT, OP, and JPS). Increased fall rates in the second and third trimesters of pregnancy may be driven by changes in attention, with additional contributions of joint position sense and environmental perception at various stages of gestation. The results imply that a holistic examination on an individual basis may be required to determine individual trip risk and appropriate safety modifications.
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The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This study was funded by American Society of Biomechanics (ASB) Junior Faculty Research Award. We would like to thank all the pregnant participants that volunteered their time for this research and Moscow/Pullman OBGYN for help in recruitment.
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Jamali, P., Kinkade, K.M., Ericson, A. et al. Different neurocognitive controls modulate obstacle avoidance through pregnancy. Exp Brain Res 242, 505–519 (2024). https://doi.org/10.1007/s00221-023-06772-w
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DOI: https://doi.org/10.1007/s00221-023-06772-w