Comparing Self-Reported and Measured Physical Activity in African Populations
Author Information
Author(s): Davies Jessica C., Choo-Kang Candice, Soepnel Larske, Geffen Hayli, Mtintsilana Asanda, Africa Chad, Bovet Pascal, Viswanathan Bharathi, Bedu-Addo Kweku, Boateng Prince Oti, Apusiga Kingsley, Dei Oscar Akunor, Forrester Terrence E., Lambert Estelle V., Sinyanya Nandipha, Layden Brian T., Gilbert Jack A., Ecklu-Mensah Gertrude, Joyce Cara, Luke Amy, Dugas Lara R.
Primary Institution: University of Cape Town
Hypothesis
How accurately do self-reported physical activity questionnaires reflect actual physical activity levels in African-origin populations?
Conclusion
Self-reported physical activity often overestimates actual activity levels, highlighting the need for more accurate measurement methods.
Supporting Evidence
- 23.5% of participants were classified as sufficiently active by both measures.
- 38.2% of those classified as sufficiently active by self-report did not meet the criteria using objective monitoring.
- Men were more likely to be classified as sufficiently active than women.
- Obese participants had lower odds of being classified as sufficiently active.
Takeaway
This study shows that people often think they are more active than they really are, especially when they report their own exercise instead of measuring it with devices.
Methodology
The study compared self-reported physical activity using the GPAQ with objective measurements from accelerometers in a cohort of African-origin adults.
Potential Biases
Self-reported measures may be influenced by social desirability bias, leading to overestimation of physical activity.
Limitations
The study's reliance on self-reported data may lead to inaccuracies, and accelerometers do not capture all types of physical activity.
Participant Demographics
Participants were African-origin adults aged 35-55 from Ghana, South Africa, Jamaica, Seychelles, and the US.
Statistical Information
P-Value
p<0.01
Confidence Interval
95% CI = 2.7 – 10.7
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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