At present, it is recommended that children perform at least 60 min of physical activity per day. However, the duration of physical activity inevitably depends on subjective assessment. Therefore, this study aimed to clarify the discrepancy between subjective and objective assessments of the duration of physical activity, and the 2nd aim of this study propose guidelines in terms of the number of paces needed to ensure people perform at least 60 min of physical activity. The results clarified the following points:
Subjective assessments of physical activity tend to overestimate the duration, and this tendency is particularly strong in the group belonging to sports clubs. While the non-sports club group showed a reduced tendency to overestimate the duration.
The guideline numbers of paces are approximately 12,500～13,000 paces as an index for ensuring 60 min of LC3-9 (walking intensity or greater), approximately 15,500～16,000paces as an index for LC4-9. These may be regarded as the basic number of paces, the recommended number of paces.
