Table 3. Mean (SD) pressure pain thresholds (kPa) for session 1 assessed over 14 locations covering the low back region and level of significance (p-values) among trial.

See “Procedure to mark the 14 anatomical locations” for explanation concerning the locations of PPT assessments.

	Trial 1		Trial 2		Trial 3		T1-T2-T3		T1 - T2	T1 - T3	T2 - T3
	Mean	(SD)	Mean	(SD)	Mean	(SD)	Mean	(SD)	p-value	p-value	p-value
P1	539.0	(237.3)	487.1	(219.5)	494.4	(209.6)	506.8	(218.2)	0.8114	0.8571	0.9958
P2	506.1	(190.2)	512.1	(252.5)	519.2	(205.0)	512.5	(212.2)	0.9971	0.9862	0.9958
P3	607.5	(237.7)	621.5	(275.1)	645.7	(244.6)	624.9	(247.2)	0.9883	0.9159	0.9653
P4	654.6	(193.9)	651.0	(228.3)	641.3	(214.6)	649.0	(207.6)	0.9989	0.9851	0.9920
P5	607.6	(219.8)	653.9	(241.9)	638.9	(233.9)	633.4	(227.2)	0.8583	0.9324	0.9840
P6	593.4	(231.9)	626.6	(249.0)	664.6	(249.7)	628.2	(239.5)	0.9312	0.7220	0.9107
P7	534.9	(243.0)	565.8	(250.7)	586.0	(246.9)	562.2	(241.7)	0.9413	0.8481	0.9745
P8	535.5	(259.3)	564.0	(278.9)	571.6	(227.3)	557.0	(250.2)	0.9534	0.9264	0.9966
P9	629.8	(227.8)	620.0	(259.1)	657.6	(241.3)	635.8	(237.6)	0.9938	0.9506	0.9118
P10	560.9	(246.8)	605.6	(238.4)	604.6	(230.5)	590.4	(233.7)	0.8734	0.8790	0.9999
P11	628.9	(242.4)	651.4	(216.1)	664.1	(251.9)	648.1	(231.9)	0.9659	0.9187	0.9890
P12	616.0	(263.2)	654.4	(262.7)	616.5	(229.4)	629.0	(246.7)	0.9145	1.0000	0.9166
P13	596.9	(243.6)	638.6	(222.5)	634.9	(212.1)	623.5	(221.7)	0.8773	0.8969	0.9990
P14	604.2	(252.5)	593.3	(264.2)	573.4	(221.4)	590.3	(240.9)	0.9925	0.9418	0.9753
Pleft	579.5	(235.0)	593.2	(240.4)	595.8	(218.2)	589.5	(225.8)	0.9865	0.9810	0.9995
Pright	594.1	(211.0)	613.2	(229.5)	620.3	(215.8)	609.2	(213.8)	0.9709	0.9463	0.9960
Pall	586.8	(220.8)	603.2	(233.6)	608.1	(214.5)	599.4	(217.8)	0.9793	0.9656	0.9982