Published on in Vol 2, No 1 (2019): Jan-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12303, first published
.
![Relevance of Activity Tracking With Mobile Devices in the Relationship Between Physical Activity Levels and Satisfaction With Physical Fitness in Older Adults: Representative Survey Relevance of Activity Tracking With Mobile Devices in the Relationship Between Physical Activity Levels and Satisfaction With Physical Fitness in Older Adults: Representative Survey](https://asset.jmir.pub/assets/a30d0c1cf31461853d00fc0287cae1d5.png 480w,https://asset.jmir.pub/assets/a30d0c1cf31461853d00fc0287cae1d5.png 960w,https://asset.jmir.pub/assets/a30d0c1cf31461853d00fc0287cae1d5.png 1920w,https://asset.jmir.pub/assets/a30d0c1cf31461853d00fc0287cae1d5.png 2500w)
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