스마트폰 앱과 자가보고식 설문지의 신체활동 측정 비교

초록

Purpose: The purpose of this study was to examine the level of agreement between smartphone apps and self-reportedphysical activity questionnaires. Methods: Quantitative methods were used to assess the correlation and agreementbetween the number of steps counted by a smartphone app and the amount of walking reported in a survey. A total of29 adults who used smartphones were recruited from a university, and their step counts from their smartphonepedometers and responses to the international physical activity questionnaire (IPAQ) were collected over a 10-weekperiod. Results: An analysis of 170 data pairs with Spearman's rho correlation and a Bland-Altman plot revealed a positivecorrelation between step counts from the smartphone app and walking activity from the IPAQ. The Bland-Altman plotalso demonstrated the agreement to be improved among female participants. Conclusion: In assessing walking activity,smartphone pedometer apps showed good correlation with the IPAQ and improved agreement with the IPAQ amongwomen. Therefore, it is suggested that the participants’ gender and activity intensity, as well as the accuracy ofmeasurement tools, should be considered in an evaluation of the delivery of physical activity promotion programs throughsmartphone apps.

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