Effects of high occupational physical activity, aging, and exercise on heart rate variability among male workers
Annals of Occupational and Environmental Medicine
; : 22-2015.
Article
in En
| WPRIM
| ID: wpr-52292
Responsible library:
WPRO
ABSTRACT
OBJECTIVES:
Effects of aging and leisure time physical activity (LPA) might influence the effect of occupational physical activity (OPA) on risk for cardiovascular disease (CVD). This study was conducted to determine whether OPA affects CVD after controlling the effects of LPA and other risk factors for CVD such as job stress.METHODS:
Participants were 131 male Korean manual workers. Tests for heart rate variability (HRV) were conducted for five minutes in the morning at work. We defined OPA as the combined concept of relative heart rate ratio (RHR), evaluated using a heart rate monitor.RESULTS:
Whereas high OPA was not related to any HRV items in the younger age group, high OPA was associated with an increased number of low-value cases among all HRV items in older workers. Exercise had beneficial effects only in the younger group. After controlling for exercise and other risk factors, the odds ratios of the root-mean square of the difference of successive normal R-R intervals (rMSSD) and high frequency band power (HF) among the older age and high OPA group compared with the younger age and low OPA group were 64.0 and 18.5, respectively. Social support and shift work were independent risk factors in HRV.CONCLUSIONS:
OPA in aging workers increases CVD risks. This study provides support for the need for protection of aging workers from physical work overload, and indicates the need for further study of optimal limits of OPA.Key words
Full text:
1
Index:
WPRIM
Main subject:
Aging
/
Cardiovascular Diseases
/
Odds Ratio
/
Risk Factors
/
Heart
/
Heart Rate
/
Leisure Activities
/
Motor Activity
Type of study:
Etiology_studies
/
Risk_factors_studies
Limits:
Humans
/
Male
Language:
En
Journal:
Annals of Occupational and Environmental Medicine
Year:
2015
Type:
Article