Table 3.

Associations among measures the pain experience and muscle damage

Pain measure	Duration (h)	T2 change—multifidii	T2 change—erector spinae	T2 change—average	Torque loss at 48 h	PPT change
Pain intensity	24	0.162	−0.117	0.034	0.209	−0.436
	48	0.085	−0.226	−0.075	0.274	−0.271
	96	0.328	−0.141	0.151	−0.126	0.043
Pain area	24	0.043	0.441	0.219	−0.332	0.115
	48	−0.188	0.093	−0.099	−0.554*	0.209
	96	0.134	0.056	0.202	−0.006	0.270

PPT, pressure pain threshold.

Torque loss is the deficit remaining at 48 hours from the baseline isometric torque test expressed as a percentage of baseline torque.

^*Significant association p<.01.