Correlations between Excessive Body Mass Index, Body Perception, Physical Activity, and Respiratory Functions among Youths in an Urban Setting of Vietnam

Table 1

Characteristics of research subjects.

Characteristics	Normal	Underweight	Overweight/obesity
	(%)	(%)	(%)
Total	222 (60.5)	84 (22.9)	61 (16.6)
Gender				<0.01
Male	109 (61.2)	29 (16.3)	40 (22.5)
Female	113 (59.8)	55 (29.1)	21 (11.1)
Hometown				0.03
Urban	67 (69.1)	13 (13.4)	17 (17.5)
Rural	155 (57.4)	71 (26.3)	44 (16.3)
Exposing tobacco smoke (including active and passive smoking)				0.03
No	15 (44.1)	14 (41.2)	5 (14.7)
Yes	207 (62.2)	70 (21)	56 (16.8)
Alcohol drinkers				0.17
No	172 (59.5)	72 (24.9)	45 (15.6)
Yes	50 (64.1)	12 (15.4)	16 (20.5)
	Mean (SD)	Mean (SD)	Mean (SD)
Age (mean, SD - year)	20.4 (1.1)	20.0 (1.0)	19.8 (1.0)	<0.01

The average BMI, Pignet, and waist-height ratio of participants were (kg/cm²), , and , respectively. The overweight/obese rate was 16.6%, and the underweight rate was 22.9% in the study. Table 2 showed that the rate of misconception about body perception was 38.2%, which was statistically higher in overweight/obese students compared to students with moderate BMI and underweight ().