Comparison of self-reported and accelerometer-assessed measurements of physical activity according to socio-demographic characteristics in Korean adults.
- Author:
Seung Won LEE
1
;
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
Author Information
- Publication Type:Original Article
- Keywords: Physical activity; Accelerometer; Questionnaire; Korea
- MeSH: Adult*; Cross-Sectional Studies; Depression; Humans; Korea; Male; Metabolic Equivalent; Motor Activity*; Socioeconomic Factors; Wrist
- From:Epidemiology and Health 2018;40(1):e2018060-
- CountryRepublic of Korea
- Language:English
- 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). CONCLUSION: 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.
