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

Table 3

Physical activity characteristics.

Physical activity characteristic	BMI classification
	Normal	Underweight	Overweight/obesity
	Mean (SD)	Mean (SD)	Mean (SD)
Time for physical activity
Vigorous physical activity time (minute)	62.9 (51.0)	49.7 (46.4)	76.2 (43.2)	0.01
Moderate physical activity time (minute)	75.0 (56.1)	75.6 (54.4)	84.3 (56.0)	0.51
Walking time (minute)	23.8 (17.1)	22.2 (14.2)	21.8 (12.4)	0.86
Sitting time (minute)	176.5 (19.1)	176.3 (21.9)	180.0 (-)	0.29
Energy consumption
Vigorous physical activity per week (MET)	1367.7 (2072.1)	642.2 (709.2)	1637.6 (1716.4)	0.02
Moderate physical activity per week (MET)	1553.3 (2213.1)	1496.6 (2535.5)	1628.9 (1617.9)	0.32
Walking per week (MET)	379.8 (365.1)	366.5 (323.3)	367.3 (297.5)	0.87
Total energy consumption per week (MET)	3380.5 (2968.5)	2534.8 (2673.0)	3609.7 (2422.7)	0.12
Level of physical activity	(%)	(%)	(%)
Low	102 (46.0)	35 (41.7)	21 (34.4)	0.03
Moderate	78 (35.1)	42 (50.0)	26 (42.6)
High	42 (18.9)	7 (8.3)	14 (23.0)
Type of physical activity				0.12
Inactive	140 (63.1)	56 (66.7)	31 (50.8)
Active	82 (36.9)	28 (33.3)	30 (49.2)