Characteristics of Paraspinal Muscle Spindle Response to
Mechanically-Assisted Spinal Manipulation-A Preliminary Report

William R Reed; Joel G Pickar; Randall S Sozio; Michael A.K. Liebschner; Joshua W. Little; Maruti R Gudavalli

doi:10.1016/j.jmpt.2017.03.006

Table 3

Neural Response Characteristics Following Pulstar MAM
Shows the time required until the first action potential and mean differences between mean frequency (MF) and mean instantaneous frequency (MIF) 2s after Pulstar mechanical-assisted manipulation (MAM) and 2s baseline measures. All Pulstar MAM thrusts resulted in a decrease in spindle discharge relative to baseline activity.

Time (s) to 1^st Action Potential After
MAM Change from Baseline During 2s After
MAM
Force
67N

(n=15) 22N

(n=18) 44N

(n=18) Force
67N

(n=15) 22N

(n=18) 44N

(n=18)
Mean Time (SEM) .229 (0.9) .289 (0.1) .284 (0.1) Mean MF (SEM) −5.1 (0.6) −4.9 (0.9) −4.3 (1.3)
Mean MIF (SEM) −4.1 (0.5) −4.3 (1.0) −3.4 (1.5)

Time (s) to 1^st Action Potential After MAM				Change from Baseline During 2s After MAM
Force 67N (n=15)	22N (n=18)	44N (n=18)		Force 67N (n=15)	22N (n=18)	44N (n=18)
Mean Time (SEM)	.229 (0.9)	.289 (0.1)	.284 (0.1)	Mean MF (SEM)	−5.1 (0.6)	−4.9 (0.9)	−4.3 (1.3)
Mean Time (SEM)	.229 (0.9)	.289 (0.1)	.284 (0.1)	Mean MIF (SEM)	−4.1 (0.5)	−4.3 (1.0)	−3.4 (1.5)