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SMS reminders to increase accelerometer wear-time: A within-trial RCT comparing persuasive messages

SMS reminders to increase accelerometer wear-time: A within-trial RCT comparing persuasive messages

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00007721
Enrollment
230
Registered
2015-04-14
Start date
2015-01-11
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Accelerometer wear time Feasibility of SMS reminders as a means to improve accelerometer wear time.

Interventions

Group 1: Succinct reminder condition: “Good morning! Remember to put on the activity monitor. Thanks!”. Reminder sent on six consecutive mornings. Group 2: Reminder and rational justification: “Good m

Sponsors

Helsinki University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
15 Years to No maximum

Inclusion criteria

Inclusion criteria: Vocational school student taking part in the Let's Move It RCT.

Exclusion criteria

Exclusion criteria: Not filling the inclusion criterion.

Design outcomes

Primary

MeasureTime frame
1. The number of days on which participants wear the accelerometer, i.e.: provide valid activity data (days of =10 hours of activity data). 2. Total wear-time.

Secondary

MeasureTime frame
Feasibility of using SMS and SMS content acceptability as a part of an RCT, measured with a survey asking about satisfaction with SMS content and fidelity to the intervention (how often the SMS was opened and read in the morning). We also hypothesize the arm receiving reasons to comply would have lower dropout rates in the main study.

Countries

Finland

Contacts

Public ContactMatti Heino

Helsinki University

matti.tj.heino@helsinki.fi+358407018687

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Mar 4, 2026