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Criterion Validity and Reliability of the IPAQ-SF for Assessing Sedentary Behavior in Adults Using Different

Tamiles Costa Ribeiro1, Ana Luiza Oliveira Santos Nascimento1, Marcelle Reis Nascimento Oliveira1

  • 1Department of Health Sciences, State University of Santa Cruz (UESC), Ilhéus, Bahia, Brazil.

Perceptual and Motor Skills
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Summary

The International Physical Activity Questionnaire - Short Form (IPAQ-SF) shows excellent reliability for measuring sedentary behavior but has limited validity. Researchers should use self-reported sitting time cautiously in studies.

Keywords:
accelerometryadultssedentary behaviorself-reportsurveys and questionnairesvalidation studies

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Area of Science:

  • Physical Activity Epidemiology
  • Behavioral Measurement Validation

Background:

  • Accurate assessment of sedentary behavior (SB) is crucial for public health.
  • The International Physical Activity Questionnaire - Short Form (IPAQ-SF) is widely used but its validity for SB needs further investigation.
  • Understanding SB measurement properties across different time frames and accelerometer cut-points is essential.

Purpose of the Study:

  • To assess the criterion validity and reliability of the IPAQ-SF for estimating sedentary behavior.
  • To compare IPAQ-SF validity across weekdays, weekends, and total weekly time.
  • To evaluate the impact of different accelerometer cut-off points on SB measurement.

Main Methods:

  • Methodological validation study involving 80 university students.
  • Objective SB measurement using ActiGraph accelerometers with <100 and <150 cpm cut-offs.
  • IPAQ-SF for self-reported sitting time; test-retest reliability assessed via ICC; criterion validity analyzed using Spearman correlation and Bland-Altman plots.

Main Results:

  • IPAQ-SF demonstrated high test-retest reliability (ICC = 0.622-0.856).
  • Criterion validity was weak but significant for weekdays and total weekly SB using the <150 cpm cut-off.
  • IPAQ-SF underestimated SB at <100 cpm and overestimated at <150 cpm, with stronger correlations for weekdays.

Conclusions:

  • The IPAQ-SF exhibits excellent reproducibility for assessing sedentary behavior.
  • Criterion validity of the IPAQ-SF for sedentary behavior is limited, particularly when compared to objective measures.
  • Findings suggest cautious interpretation of IPAQ-SF-derived sedentary behavior data in population studies.