International Physical Activity Questionnaire (IPAQ)

Description

The International Physical Activity Questionnaire (IPAQ) is one of the most widely used standardized self-report instruments for assessing physical activity and sedentary behavior in adult populations. Developed through an international collaborative research initiative, the IPAQ provides a reliable and valid method for evaluating habitual physical activity across diverse countries, cultures, and population groups, making it one of the most frequently employed tools in epidemiological, clinical, and public health research.

The questionnaire is available in both Short Form (IPAQ-SF) and Long Form (IPAQ-LF) versions. It assesses the frequency, duration, and intensity of physical activity performed during the previous seven days across multiple domains of daily life, including occupational activities, transportation, household tasks, and leisure-time exercise. Additionally, the IPAQ measures time spent sitting, providing an estimate of sedentary behavior, an important independent risk factor for numerous chronic diseases.

The IPAQ has been translated and validated in numerous languages and is extensively used in population surveillance, clinical practice, sports science, rehabilitation, preventive medicine, and health promotion programs. Its standardized scoring protocol facilitates international comparisons of physical activity patterns and supports research investigating the relationship between physical activity and health outcomes.

Analysis and Use of Data

Analysis of the International Physical Activity Questionnaire (IPAQ) involves calculating the frequency, duration, and intensity of reported physical activities, which are subsequently converted into Metabolic Equivalent Task minutes per week (MET-min/week) according to the official IPAQ scoring protocol.

The instrument evaluates three primary categories of physical activity:

• vigorous-intensity physical activity,
• moderate-intensity physical activity, and
• walking.

It also measures daily sitting time, providing valuable information about sedentary behavior and overall movement patterns.

IPAQ data can be analyzed using continuous MET scores or by classifying participants into Low, Moderate, or High physical activity categories based on internationally established scoring criteria.

In research settings, IPAQ scores are frequently examined in relation to:

• cardiovascular health,
• obesity,
• body mass index (BMI),
• metabolic syndrome,
• diabetes,
• hypertension,
• physical fitness,
• mental health,
• depression,
• anxiety,
• quality of life,
• sleep quality,
• musculoskeletal disorders,
• healthy aging,
• occupational health, and
• all-cause mortality.

The psychometric evaluation of the IPAQ typically includes assessments of internal consistency, test–retest reliability, and criterion validity, often through comparisons with accelerometers, pedometers, heart-rate monitoring, and other objective physical activity measures. Depending on the objectives of the study, statistical analyses may include correlation analysis, multiple linear regression, logistic regression, independent-samples t-tests, ANOVA, MANOVA, multilevel analysis, and Structural Equation Modeling (SEM).

Purpose

The primary purpose of the International Physical Activity Questionnaire (IPAQ) is to provide a standardized, reliable, and internationally comparable assessment of habitual physical activity and sedentary behavior among adults.

The questionnaire supports researchers, healthcare professionals, exercise scientists, and public health authorities in monitoring physical activity patterns, identifying physically inactive populations, evaluating health promotion interventions, and investigating the associations between physical activity and chronic disease prevention.

Furthermore, the IPAQ plays a significant role in national and international surveillance systems aimed at monitoring population health, informing evidence-based public health policies, and promoting active lifestyles across different demographic groups.

Scoring

The International Physical Activity Questionnaire (IPAQ) is scored according to the official IPAQ scoring guidelines by combining the frequency (days per week) and duration (minutes per day) of walking, moderate-intensity activities, and vigorous-intensity activities performed during the previous seven days.

Each activity is assigned a standardized MET value, and total physical activity is expressed as MET-minutes per week (MET-min/week). Based on the calculated scores, participants are classified into one of three internationally recognized physical activity levels:

• Low Physical Activity
• Moderate Physical Activity
• High Physical Activity

In addition to physical activity levels, the questionnaire records daily sitting time, allowing researchers to evaluate sedentary behavior independently of overall physical activity. Higher MET scores indicate greater overall physical activity, whereas prolonged sitting time may reflect increased sedentary behavior and associated health risks. Interpretation of results should always follow the official IPAQ scoring protocol to ensure consistency and comparability across studies.

References

Craig, C. L., Marshall, A. L., Sjöström, M., Bauman, A. E., Booth, M. L., Ainsworth, B. E., et al. (2003). International Physical Activity Questionnaire: 12-Country Reliability and Validity. Medicine & Science in Sports & Exercise, 35(8), 1381–1395.

Gordon, N. F., & Scibek, J. (2005). The International Physical Activity Questionnaire and Its Application in Clinical Settings. Journal of Cardiopulmonary Rehabilitation and Prevention, 25(3), 175–182.

Kriska, A. M., & Knowler, W. C. (2007). Using the IPAQ to Measure Physical Activity: Insights from the Diabetes Prevention Program. International Journal of Behavioral Nutrition and Physical Activity, 4, 41.