NCT03384550

Can a Smartphone App That Includes a Chatbot-based Coaching and Incentives Increase Physical Activity in Healthy Adults?

Completed NA Last updated 27 March 2018

What this trial tests

NA trial testing Self-regulation coaching in Physical Activity in 274 participants. Completed in 31 January 2018.

Timeline

24 October 2017

Primary endpoint
17 December 2017

31 January 2018

Quick facts

Lead sponsor	University of St.Gallen
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	factorial
Masking	single
Primary purpose	prevention
Enrollment	274
Start date	24 October 2017
Primary completion	17 December 2017
Estimated completion	31 January 2018
Sites	1 location across Switzerland

Drugs / interventions tested

• Self-regulation coaching
• Planning
• Financial Incentives
• Charity Incentives

Conditions studied

• Physical Activity — all drugs for Physical Activity →

Sponsor

University of St.Gallen

Who can join

18 and older, any sex, with Physical Activity. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The investigators conduct a micro-randomized trial to test main effects and moderators of three different intervention components of Ally, a mHealth intervention to promote physical activity that is offered to customers of a large Swiss health insurance. Interventions include the use of different incentive strategies, a weekly planning intervention and daily message prompts to support self-regulation. The Health Action Process Approach (HAPA) as well as principles from behavioral economics were used to guide the development of interventions. Further, sensor data is collected in order to enable prediction of latent contextual variables. These data can be used to build prediction models for the user's state of receptivity, i.e. points in time where the user is able and/or willing to receive, process and utilize the support provided. The results of this study enable the evidence-based development of a just-in-time adaptive intervention for physical activity.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

1. Which Components of a Smartphone Walking App Help Users to Reach Personalized Step Goals? Results From an Optimization Trial.
   Kramer JN, Künzler F, Mishra V, Smith SN, et al · · 2020 · cited 45× · PMID 32182353 · DOI 10.1093/abm/kaaa002
2. Investigating Intervention Components and Exploring States of Receptivity for a Smartphone App to Promote Physical Activity: Protocol of a Microrandomized Trial.
   Kramer JN, Künzler F, Mishra V, Presset B, et al · · 2019 · cited 38× · PMID 30702430 · DOI 10.2196/11540