Influence of Obesity on Heart Rate Variability in Nurses with Age and Shift Type as Moderators
Table 1
Demographic characteristics and HRV values of participants.
Variable
All ()
Rotating shifts ()
Fixed day shift ()
†
(%)
(%)
(%)
Gender
0.085
Male
8 (3.3)
8 (4.5)
0 (0)
Female
234 (96.7)
170 (95.5)
64 (100)
Smoking habit
0.255
None
230 (95.0)
167 (93.8)
63 (98.4)
Occasionally
5 (2.1)
4 (2.2)
1 (1.6)
Has quit
7 (2.9)
7 (3.9)
0 (0)
Drinking habit
0.136
None
178 (73.6)
92 (51.7)
40 (62.5)
Occasionally
64 (26.4)
86 (48.3)
24 (37.5)
Hypertension
0.548
Yes
1 (0.4)
1 (0.6)
0 (0)
No
241 (99.6)
177 (99.4)
64 (100)
Diabetes
0.112
Yes
3 (1.2)
1 (0.6)
2 (3.1)
No
239 (98.8)
177 (99.4)
62 (96.9)
Mean (SD)
Mean (SD)
Mean (SD)
Age
28.98 (6.56)
27.09 (4.59)
34.26 (8.18)
<0.001
BMI
23.16 (4.69)
23.09 (4.44)
23.35 (5.38)
0.707
Systolic pressure
103.88 (12.67)
103.44 (11.80)
105.09 (14.86)
0.425
Diastolic pressure
65.78 (10.09)
65.78 (10.09)
65.78 (10.09)
0.855
WC
76.98 (11.17)
76.50 (10.76)
78.31 (12.24)
0.268
HR
74.75 (11.36)
74.41 (10.62)
75.71 (13.24)
0.435
HF
6.26 (1.59)
6.32 (1.46)
6.12 (1.90)
0.442
LF
6.39 (1.50)
6.42 (1.43)
6.29 (1.68)
0.541
LF/HF
1.04 (0.18)
1.03 (0.16)
1.06 (0.23)
0.259
VLF
6.57 (1.31)
6.58 (1.30)
6.54 (1.35)
0.833
TP
7.62 (1.18)
7.69 (1.12)
7.45 (1.30)
0.172
SDNN
75.59 (107.36)
75.16 (105.13)
76.80 (114.18)
0.917
†Categorical variables were analyzed using a chi-square test, and continuous variables were analyzed using a -test. Abbreviations: BMI: body mass index; WC: waist circumference; HRV: heart rate variability; HF: high frequency; LF: low frequency; LF/HF: low- to high-frequency power ratio; VLF: very low frequency; TP: total power; SDNN: standard deviation of normal-to-normal interval.
