Fig. 2From: Assessing forces during spinal manipulation and mobilization: factors influencing the difference between forces at the patient-table and clinician-patient interfacesa. Apparatus used to deliver SMT and MOB, surface EMG electrodes recording muscle activity and schematization of the FSTT® coordinate system. b. Formula to calculate the difference in force between the patient-table and the clinician-patient interfaces (Fdiff)Back to article page