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. 2021 Jun 7;35(3):794–805. doi: 10.1007/s12028-021-01232-1

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Effect of prolonged squeeze on AP. a AP changes during squeeze for patients 5 (left) and 10 (right) at low (open circles) versus high (solid circles) SCPPs. Plots of endurance time (b) and change in AP (c) during straining. N = 10, mean ± standard error. Best-fit straight line (a, Ȓ² = 0.93) and quadratic (b, Ȓ² = 0.87). AP anal pressure, SCPP spinal cord perfusion pressure