Heavy Physical Work: Cardiovascular Load in Male Construction Workers

Area of Science:

• Occupational Health
• Cardiovascular Physiology
• Ergonomics

Background:

• Construction work involves significant physical exertion.
• Understanding cardiovascular load (CVL) is crucial for worker health.
• Previous research has not fully detailed CVL during work and leisure in this sector.

Purpose of the Study:

• To determine cardiovascular loads (CVL) in construction workers during work and leisure using relative heart rate (RHR).
• To evaluate the relationship between CVL and individual factors, work ability, musculoskeletal pain, and general health.

Main Methods:

• A cohort of 255 construction workers completed a baseline questionnaire.
• Cardiovascular load (CVL) was assessed in 42 workers over 3-4 days by monitoring relative heart rate (RHR).
• Data analysis correlated RHR metrics with demographic, occupational, and health-related factors.

Main Results:

• Nearly 60% of the workday was spent below 20% RHR, with a mean work RHR of 16%.
• Significant variations in RHR were observed across different construction professions.
• Cardiovascular load (CVL) at work showed significant associations with age and V̇O(2max), but not with work ability, pain, or general health.

Conclusions:

• Cardiovascular load (CVL) in construction workers varies by profession and is influenced by age and aerobic fitness.
• Current work demands do not appear to be directly linked to perceived work ability, pain, or general health in this cohort.
• Further research may explore specific high-load tasks and long-term health implications.