Sit to Stand total duration
The duration of each Sit-to-Stand cycle, from standing up to sitting down, is automatically calculated.
Sit to Stand sub durations
The duration of the dynamic phases (flexion and extension of the trunk) as well as those of the static phases (sitting and standing) are given.
Sit to Stand trunk angles
The degree of flexion and extension of the trunk is calculated for standing up and sitting down.
Sit to Stand maximum vertical velocity
Maximum velocity in vertical direction is calculated for the rising-phases and for the descending-phases.
Sit to Stand maximum angular velocity
The maximum trunk angular velocity is calculated during each rising-phase and descending-phase.
1. Zijlstra, A., Mancini, M., Lindemann, U., Chari, L., Zijlstra, W. (2012). Sit-Stand and Stand-Sit Transitions in Older Adults and Patients with Parkinson’s Disease: Event Detection Based on Motion Sensors Versus Force Plates. Journal of NeuroEngineering and Rehabilitation, 9(75), 1-10. doi:10.1186/1743-0003-9-75
2. van Lummel, R. C., Ainsworth, E., Lindemann, U., Zijlstra, W., Chiari, L., Van Campen, P., & Hausdorff, J. M. (2013). Automated Approach for Quantifying the Repeated Sit-To-Stand Using one Body Fixed Sensor in Young and Older Adults. Gait & posture, 38(1), 153-156. doi:10.1016/j.gaitpost.2012.10.008
3. van Lummel, R. C., Ainsworth, E., Hausdorff, J. M., Lindemann, U., Beek, P. J., & Van Dieën, J. H. (2012). Validation of Seat-Off and Seat-On in Repeated Sit-To-Stand Movements Using a Single-Body-Fixed Sensor. Physiological measurement, 33(11), 1855.
4. van Lummel, R. C., Walgaard, S., Maier, A. B., Ainswort, E., Beek, P. J., van Dieën, J. H. (2016). The Instrumented Sit-to-Stand Test (iSTS) Has Greater Clinical Relevance than the Manually Recorded Sit-to-Stand Test in Older Adults. PLOSone, 11(7), 1-16. doi:10.1371/journal.pone.0157968