Association between Obesity and Carotid Intima-Media Thickness in Korean Office Workers: The Mediating Effect of Physical Activity
Table 2
Characteristics of study participants according to physical activity and body mass index (BMI).
Physically Active
P value
Physically Inactive
P value
Total (n=333)
BMI (<25) (n=198)
BMI (25) (n=135)
Total (n=581)
BMI (<25) (n=383)
BMI (25) (n=198)
Age, years
43.9±9.2
43.6±9.3
44.4±9.1
0.454
43.3±9.2
42.3±9.2
45.2±8.9
<0.001
BMI, kg/m2
24.3±2.6
22.6±1.6
26.8±1.5
<0.001
23.9±3.1
22.2±1.8
27.2±2.1
<0.001
WHtR
0.51±0.04
0.49±0.03
0.54±0.03
<0.001
0.51±0.05
0.49±0.04
0.55±0.03
<0.001
Body fat, %
24.6±6.0
23.3±5.8
26.6±5.8
<0.001
26.7±6.1
25.8±5.9
28.4±6.2
<0.001
LBM, kg
29.3±5.8
27.1±5.2
32.5±5.2
<0.001
27.1±6.3
24.8±5.3
31.6±5.6
<0.001
SBP, mmHg
123.6±13.3
121.0±13.8
127.5±11.7
<0.001
123.0±15.3
118.1±13.1
132.4±15.0
<0.001
DBP, mmHg
79.5±10.2
77.9±10.7
82.0±8.3
<0.001
78.5±10.8
75.4±10.1
84.6±9.4
<0.001
Current smoking, n (%)
Never smoker
263
169(85.4)
94(69.7)
<0.001
480(82.6)
346(90.3)
134(67.7)
<0.001
Former smoker
4
1(0.5)
3(2.2)
0.149
7(1.2)
2(0.5)
5(2.5)
0.138
Current smoker
66
28(14.1)
38(28.1)
0.008
94(16.2)
35(9.1)
59(29.8)
<0.001
Alcohol consumption
No drinking
117(53.2)
104(52.5)
73(54.1)
0.584
359(61.8)
236(61.6)
123(62.1)
0.589
≤1 time per week
99(29.7)
66(33.3)
33(24.4)
0.002
147(25.3)
109(28.5)
38(19.2)
0.011
≥2 time per week
57(17.1)
28(14.1)
29(21.5)
0.012
75(12.9)
38(9.9)
37(18.7)
0.012
Hypertension, n (%)
29(8.8)
11(5.6)
18(13.4)
0.013
70(12.4)
26(7.0)
44(22.7)
<0.001
Diabetes, n (%)
7(2.1)
5(2.5)
2(1.5)
0.516
13(2.3)
6(1.6)
7(3.6)
0.135
Hyperlipidemia, n (%)
20(6.0)
10(5.1)
10(7.5)
0.371
48(8.5)
27(7.3)
21(10.8)
0.154
CIMT, mm
0.52±0.08
0.51±0.08
0.53±0.08
<0.001
0.53±0.11
0.51±0.10
0.57±0.12
<0.001
Physically Active: meeting the WHO recommended minimum amount of weekly physical activity. Physically Inactive: not meeting the WHO recommended minimum amount of weekly physical activity. LBM: lean body mass, SBP: systolic blood pressure, DBP: diastolic blood pressure, and CIMT: carotid intima-media thickness.
