Objectives Time spent inactive and sedentary are both associated with poor health. Self-monitoring of walking, using pedometers for real-time feedback, is effective at increasing physical activity. This study evaluated the feasibility of a new pocket-worn sedentary time and physical activity real-time self-monitoring device (SitFIT).
Methods Forty sedentary men were equally randomised into two intervention groups. For 4 weeks, one group received a SitFIT providing feedback on steps and time spent sedentary (lying/sitting); the other group received a SitFIT providing feedback on steps and time spent upright (standing/stepping). Change in sedentary time, standing time, stepping time and step count was assessed using activPAL monitors at baseline, 4-week follow-up (T1) and 12-week (T2) follow-up. Semistructured interviews were conducted after 4 and 12 weeks.
Results The SitFIT was reported as acceptable and usable and seen as a motivating tool to reduce sedentary time by both groups. On average, participants reduced their sedentary time by 7.8 minutes/day (95% CI −55.4 to 39.7) (T1) and by 8.2 minutes/day (95% CI −60.1 to 44.3) (T2). They increased standing time by 23.2 minutes/day (95% CI 4.0 to 42.5) (T1) and 16.2 minutes/day (95% CI −13.9 to 46.2) (T2). Stepping time was increased by 8.5 minutes/day (95% CI 0.9 to 16.0) (T1) and 9.0 minutes/day (95% CI 0.5 to 17.5) (T2). There were no between-group differences at either follow-up time points.
Conclusion The SitFIT was perceived as a useful tool for self-monitoring of sedentary time. It has potential as a real-time self-monitoring device to reduce sedentary and increase upright time.
- sedentary behaviour
- user trial
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Contributors AM conducted the study, analysed the data and drafted the manuscript. CB, KH and CMG conceptualised the study and contributed to the qualitative data analysis and manuscript writing. JMA assisted in the data collection and manuscript revisions. JMRG, HPvdP, DJM, SW and NM conceptualised the study and contributed to writing the manuscript. NM is the guarantor.
Funding This study has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 602170. The materials presented and views expressed here are the responsibility of the authors only. The EU Commission takes no responsibility for any use made of the information set out. KH is supported by the UK Medical Research Council and Chief Scientist Office (MC_UU_12017/12; SPHSU12).
Competing interests The SitFIT device was developed by PAL Technologies, which is a member of the EuroFIT consortium. DJM is CEO of PAL Technologies. All other authors declare no competing interest.
Ethics approval Moray House School of Education Ethics Committee, University of Edinburgh.
Provenance and peer review Not commissioned; externally peer reviewed.
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