Articles Vol. 67 No. 10 04/11/2026

ASSOCIATION OF MICROCLIMATIC FACTORS WITH 24-HOUR HEART RATE AND BLOOD PRESSURE IN TRAFFIC POLICE OFFICERS

Phan Van Manh, Nguyen Hoang Trung, Hoang Duc Nhat, Tong Duc Minh
DOI: 10.52163/yhc.v67i10.6978
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Abstract

Objective: To investigate the association between selected microclimatic factors and 24-hour heart rate and ambulatory blood pressure among traffic police officers.

Subjects and Methods: An analytical cross-sectional study was conducted among 103 traffic police officers performing outdoor traffic patrol, surveillance, and traffic control duties in Phu Tho Province, Vietnam, from March to May 2026.

Results: The mean dry-bulb temperature and wet-bulb globe temperature (WBGT) were 34.2 ± 3.1°C and 30.6 ± 2.7°C, respectively. The mean 24-hour heart rate, systolic blood pressure, and diastolic blood pressure were 82.6 ± 10.4 beats/min, 128.4 ± 11.2 mmHg, and 81.3 ± 8.5 mmHg, respectively. Dry-bulb temperature and WBGT were positively correlated with 24-hour heart rate and blood pressure (all p < 0.05). After adjustment for age, body mass index, and years of service, dry-bulb temperature and WBGT remained independently associated with 24-hour systolic blood pressure and heart rate (all p < 0.05).

Conclusion: Microclimatic conditions, particularly WBGT, were positively associated with higher 24-hour heart rate and systolic blood pressure among traffic police officers.

Keywords
Microclimate; Ambulatory blood pressure monitoring; Heart rate; Wet Bulb Globe Temperature (WBGT).
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