Objectives: Paradoxical associations between high occupational physical activity (OPA) and cardiovascular disease may be explained by exaggerated cardiovascular responses from high work-related stress or low worker fitness.
Methods: OPA, blood pressure (BP), heart rate (HR), and rate-pressure product (RPP; HR × BP) were measured objectively for 24 hours in 19 male workers. Work-related stress was measured using the Stress in General Scale. Fitness was estimated using a submaximal treadmill test. Effect modification by work-related stress and fitness on associations between OPA and cardiovascular responses was examined using mixed models with interactions.
Results: Associations between OPA and RPP, HR, and BP were stronger with high stress ( P < 0.05). Associations of work-time moderate and vigorous physical activity and RPP were attenuated with higher fitness ( P < 0.05).
Conclusions: OPA performed under high work-related stress or by workers with low fitness may exaggerate cardiovascular responses to OPA.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11521765 | PMC |
| http://dx.doi.org/10.1097/JOM.0000000000003183 | DOI Listing |
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