Effects of Temperature on Chronic Trapezius Myofascial Pain Syndrome during Dry Needling Therapy

Table 4

Pressure pain threshold (mean ± SD).

PPT kg/cm^2
Parameter	0 d	7 d	1 m	3 m	p
A group	1.62 ± 0.51	2.04 ± 0.75	2.07 ± 0.76	2.00 ± 0.70	p1 = 0.024	p2 = 0.015
					p3 = 0.040	p4 = 0.847
					p5 = 0.832	p6 = 0.685
B group	1.64 ± 0.31	1.94 ± 0.48	2.47 ± 0.63	2.55 ± 0.68	p1 = 0.018	p2 = 0.000
					p3 = 0.000	p4 = 0.016
					p5 = 0.012	p6 = 0.911
	0.859	0.532	0.039	0.004

p1: comparison between 0 and 7 days of treatment; p2: comparison between 0 and 1 month of treatment; p3: comparison between 0 and 3 months of treatment; p4: comparison between 7 days and 1 month of treatment; p5: comparison between 7 days and 1 month of treatment; p6: comparison between 1 month and 3 months of treatment.