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UES mechanical states determined from the UES pressure (UESP) and UES admittance profile from preswallow baseline to postrelaxation peak. Using the UES admittance and pressure data array for each of the swallows, we determined muscle states based on the direction of contraction or relaxation and in relation to the occluded or distended state of the lumen. Example is from the same swallow shown in Fig. 2.
