Physical activity assessment: a review of methods

Area of Science:

• Exercise Science
• Preventive Medicine
• Biomedical Instrumentation

Background:

• Determining the threshold of physical activity for disease prevention requires precise measurement tools.
• Regular, low-intensity exercise offers prophylactic benefits, necessitating instruments that can differentiate activity patterns.
• Current methods for assessing physical activity have limitations in objectivity and detail.

Purpose of the Study:

• To evaluate the necessary threshold of habitual physical activity for protective effects against degenerative diseases.
• To identify optimal instruments for assessing physical activity in field settings.
• To explore methods for validating energy expenditure assessments.

Main Methods:

• Review of existing instruments for physical activity assessment, including self-report questionnaires and activity monitors.
• Discussion of the doubly labeled water (DLW) technique as a criterion measure for energy expenditure.
• Consideration of combining personal interviews and activity monitors with questionnaires.

Main Results:

• Self-report questionnaires are practical for large populations but lack objectivity.
• The doubly labeled water (DLW) technique is accurate but too costly for large-scale studies.
• Activity monitors offer objective data and can discriminate activity patterns, serving as a valuable adjunct to questionnaires.

Conclusions:

• A combination of activity monitors and questionnaires is recommended for future studies.
• Objective measurement of physical activity patterns is crucial for understanding its role in preventing degenerative diseases.
• Further research should integrate advanced monitoring technologies with validated self-report methods.