Implementation of a SCM treatment for patients with IC may lead to significant savings of health care resources.

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Background Existing evaluations of the effects of mobile apps to encourage physical activity have been criticized owing to their common lack of external validity, their short duration, and their inability to explain the drivers of the observed effects. This protocol describes the setup of Health Telescope, a longitudinal panel study in which the long-term effects of mobile electronic health (eHealth) apps are investigated. By setting up Health Telescope, we aim to (1) understand more about the long-term use of eHealth apps in an externally valid setting, (2) understand the relationships between short-term and long-term outcomes of the usage of eHealth apps, and (3) test different ways in which eHealth app allocation can be personalized. Objective The objectives of this paper are to (1) demonstrate and motivate the validity of the many choices that we made in setting up an intensive longitudinal study, (2) provide a resource for researchers interested in using data generated by our study, and (3) act as a guideline for researchers interested in setting up their own longitudinal data collection using wearable devices. For the third objective, we explicitly discuss the General Data Protection Regulation and ethical requirements that need to be addressed. Methods In this 4-month study, a group of approximately 450 participants will have their daily step count measured and will be asked daily about their mood using experience sampling. Once per month, participants will receive an intervention containing a recommendation to download an app that focuses on increasing physical activity. The mechanism for assigning recommendations to participants will be personalized over time, using contextual data obtained from previous interventions. Results The data collection software has been developed, and all the legal and ethical checks are in place. Recruitment will start in Q4 of 2020. The initial results will be published in 2021. Conclusions The aim of Health Telescope is to investigate how different individuals respond to different ways of being encouraged to increase their physical activity. In this paper, we detail the setup, methods, and analysis plan that will enable us to reach this aim. International Registered Report Identifier (IRRID) PRR1-10.2196/16471

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BACKGROUND Existing evaluations of the effects of mobile apps to encourage physical activity have been criticized due to their common lack of external validity, their short duration and their inability to explain the drivers of the observed effects. This protocol describes the setup of the Health Telescope: a longitudinal panel study where the long-term effects of mobile eHealth apps are investigated. By setting up the Health Telescope, we aim to (1) understand more about the long-term use of eHealth applications in an externally valid setting, (2) understand relationships between short-term and long-term outcomes of the usage of eHealth applications, and (3) test different ways in which eHealth application offerings can be personalized. OBJECTIVE The objectives of this paper are to (1) demonstrate and motivate the validity of the many choices that we took in setting up an intensive longitudinal study (2) provide a resource for researchers interested in using data generated by our study; and (3) act as a guideline for researchers interested in setting up their own longitudinal data collection using wearable devices. Towards this latter aim, we explicitly discuss the GDPR and ethical requirements that had to be addressed. METHODS In this four-month study, a group of approximately 450 participants will have their daily step count measured and is asked daily about their mood using experience sampling. Once per month, participants will receive an intervention containing a recommendation to download an app that focuses on increasing physical activity. The mechanism for assigning recommendations to participants will be personalized over time, using contextual data obtained from previous interventions RESULTS The data collection software has been developed and all the legal and ethical checks are in place. Recruitment will start in Q4 of 2020. Initial results will be published in 2021. CONCLUSIONS The aim of the Health Telescope is to investigate how different individuals respond to different ways of being encouraged to increase their physical activity. In this paper, we detail the setup, methods, and analysis plan that enable us to reach this aim. CLINICALTRIAL