Table 1.

Demographic statistics.

Variables	EMG-BF (n = 30) Mean ± SD	Control (n = 30) Mean ± SD	* t-test	Effect Size (Cohen’s d)
			p Value
Age, years	25.9 ± 1.5	26.8 ± 2.2	0.087	0.48
Height, cm	167.6 ± 2.5	168.5 ± 3.2	0.235	0.31
Weight, kg	66.5 ± 3.9	67.8 ± 4.2	0.247	0.32
BMI, kg/m2	23.8 ± 0.9	24.1 ± 0.8	0.322	0.35

* Statistically significant if p < 0.05; EMG-BF, electromyographic biofeedback; effect size: small (0.20), medium (0.50), large (0.80).