Evaluation of the relationship between the pelvic floor muscles and insulin resistance

Figures & data

Table 1 Clinical and hormonal characteristics of the patients

Variable	IR (n=51)	Control (n=35)	P-value
Age (years)	25.3±4.5	27.2±4.4	>0.05
Age of menarche (years)	14.4±2.6	14.3±3.1	>0.05
Weight (kg)	75.6±17.6*	51.8±4.9*	0.04
BMI (kg/m^2)	30.1±5.7*	20.9±2.4*	<0.001
Normal	21.2%	100%
Overweight	24.2%	0%
Obese	54.6%	0%
Waist circumference (cm)	90.3±14.8*	73.4±5.4*	<0.001*
TSH (µU/mL)	2.3±1.8	1.44±0.8	>0.05
Fasting glucose	94.5±6.3	71.8±4.1	0.03
Fasting insulin	19.7±6.6*	5.4±1.8	<0.001*

Note:

* Significant difference with Student’s t-test.

Abbreviations: BMI, body mass index; IR, insulin resistance; TSH, thyroid-stimulating hormone.

Table 2 Data regarding electromyographic activity in women with and without IR

Group	IR group	Control group	P-value
Tone (µV)	13.4±3.4*	25.1±3.3*	<0.0001
MVC (µV)	47.6±4.5*	64.3±5.0*	<0.0001

Note:

* Significant difference with Student’s t-test.

Abbreviations: IR, insulin resistance; MVC, maximal voluntary contraction.

Table 3 Results of association analysis using the insulin levels as dependent variable

Independent variables	r	B	β	P-value	R^2	Adjusted R
Tone (µV)	−0.685*	−0.047	−0.025	0.866	0.759	0.732
MVC (µV)	−0.687*	0.397	−0.270	0.047**
Weight (kg)	0.637*	−0.168	−0.414	0.017**
BMI (kg/m^2)	0.613*	−0.067	−0.064	0.601
Waist circumference (cm)	0.839*	0.490	1.024	0.000**

Notes:

* Significant difference with P<0.05 using Pearson correlation (R);

** significant difference with P<0.05 using linear regression (R²) models.

Abbreviations: BMI, body mass index; MVC, maximal voluntary contraction.