Developing an observational technique for Agricultural Ergonomics Risk Assessment (AERA)

Area of Science:

• Ergonomics and Biomechanics
• Occupational Health and Safety
• Agricultural Science

Background:

• Existing ergonomics risk assessment tools often lack validity for specific industries like agriculture.
• Current observational methods may not adequately address biomechanical factors and postural loading criteria.
• Need for enhanced tools to accurately assess risks associated with awkward postures in agricultural settings.

Purpose of the Study:

• To develop and validate a novel assessment tool, the Agricultural Ergonomics Risk Assessment (AERA).
• To utilize electromyography (EMG) for classifying postural loads and prioritizing ergonomic risks.
• To evaluate individual and occupational risk factors contributing to musculoskeletal disorders (MSD).

Main Methods:

• Experimental study employing EMG to analyze postural loads and biomechanical factors.
• Development of the AERA tool based on literature reviews and EMG data.
• Validation and reliability assessment of AERA by subject matter experts and evaluators.

Main Results:

• Significant impact of varying loads and postures on muscle activation patterns observed.
• Biomechanical factors effectively assessed risk levels for awkward postures, particularly in neck, trunk, and arm regions.
• AERA demonstrated high content validity (Cronbach's alpha = 0.97) and superior test-retest reliability compared to OWAS, RULA, and REBA.

Conclusions:

• The AERA tool provides precise and reliable risk assessment for agricultural ergonomics.
• Incorporation of specific, comprehensive risk factors enhances AERA's validity and reliability.
• AERA is a valuable screening tool for identifying and mitigating MSD risks in the agricultural sector.