Comparison of self-reported and accelerometer-assessed measurements of physical activity according to socio-demographic characteristics in Korean adults

Seung Won Lee, Jee Seon Shim, Bo Mi Song, Ho Jae Lee, Hye Yoon Bae, Ji Hye Park, Hye Rin Choi, Jae Won Yang, Ji Eun Heo, So Mi Jemma Cho, Ga Bin Lee, Diana Huanan Hidalgo, Tae Hoon Kim, Kyung Soo Chung, Hyeon Chang Kim

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Abstract

OBJECTIVES: Previous studies have shown relatively low correlations between self-reported and accelerometer-assessed physical activity (PA). However, this association differs by socio-demographic factors, and this relationship has not been fully investigated in the general population. Thus, we investigated the correlation between self-reported and accelerometer-assessed PA and whether it differed by demographic and socioeconomic factors among the Korean general population. METHODS: This cross-sectional study included 623 participants (203 men and 420 women) aged 30 to 64 years, who completed a PA questionnaire and wore a wrist-worn accelerometer on the non-dominant wrist for 7 days. We examined the agreement for metabolic equivalent task minutes per week (MET-min/wk) between the 2 measures and calculated Spearman correlation coefficients according to demographic and socioeconomic factors. RESULTS: The kappa coefficient between tertiles of self-reported and accelerometer-assessed total MET-min/wk was 0.16 in the total population, suggesting overall poor agreement. The correlation coefficient between the 2 measurements was 0.26 (p<0.001) in the total population, and the correlation tended to decrease with increasing age (p for trend <0.001) and depression scores (p for trend <0.001). CONCLUSIONS: We found a low correlation between self-reported and accelerometer-assessed PA among healthy Korean adults, and the correlation decreased with age and depression score. When studying PA using accelerometers and/or questionnaires, age and depression need to be considered, as should differences between self-reported and accelerometer-assessed PA.

Original languageEnglish
Pages (from-to)e2018060
JournalEpidemiology and health
Volume40
DOIs
Publication statusPublished - 2018

All Science Journal Classification (ASJC) codes

  • Medicine(all)

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    Lee, S. W., Shim, J. S., Song, B. M., Lee, H. J., Bae, H. Y., Park, J. H., Choi, H. R., Yang, J. W., Heo, J. E., Cho, S. M. J., Lee, G. B., Hidalgo, D. H., Kim, T. H., Chung, K. S., & Kim, H. C. (2018). Comparison of self-reported and accelerometer-assessed measurements of physical activity according to socio-demographic characteristics in Korean adults. Epidemiology and health, 40, e2018060. https://doi.org/10.4178/epih.e2018060