Effectiveness of Combined General Rehabilitation Gymnastics and Muscle Energy Techniques in Older Women with Chronic Low Back Pain

Table 8

Correlation matrix illustrating power of relationships between the dependent variable and independent variables (, , , ), coefficients of correlation for the study groups.

Independent variables	Exercising group -		Non-exercising controls -
	Correlation coefficient	p	Correlation coefficient	p
	0.611	0.003	0.523	0.018
	0.595	0.004	0.596	0.006
	0.565	0.008	0.342	0.140
	0.623	0.003	0.480	0.033

p: probability of a type I error.
: maximum bioelectrical activity of the longissimus muscle left- and right sided.
: bioelectrical activity of the longissimus muscle on both sides during putting down a rehabilitation roller.
: bioelectrical activity of the longissimus muscle on both sides during lifting up a rehabilitation roller.
: bioelectrical activity of the longissimus muscle on both sides during sitting down on a chair.
: bioelectrical activity of the longissimus muscle on both sides during getting up from a chair.