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Differences in Trunk Accelerometry Between Frail and Nonfrail Elderly Persons in Sit-to-Stand and Stand-to-Sit Transitions Based on a Mobile Inertial Sensor | Galán-Mercant | JMIR mHealth and uHealth <body> <table width="100%"> <tr> <td align="center"> This page requires frames. <a href="https://mhealth.jmir.org/article/viewPDFInterstitial/mhealth_v2013i2e21/2">Click here</a> for the non-frames version. </td> </tr> </table> </body>