To evaluate the effect of environmental nudges and pricing strategies in the supermarket, as well as a mHealth (mobile health) physical activity intervention, primary on the dietary intake.
ID
Source
Brief title
Condition
- Other condition
Synonym
Health condition
Risicomarkers voor cardiometabole ziekten (lipidenspectrum, HbA1c, bloeddruk en middelomtrek)
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
The primary outcome is adherence to the Dutch dietary guidelines.
Secondary outcome
Secundary outcomes are changes in cardiometabolic outcomes (i.e. HbA1c,
low-denity lipoprotein (LDL) and high-density lipoprotein (HDL) cholesterol,
total cholesterol (TC), TC/HDL-ratio, triglycerides (TG) and waist
circumference), number of steps per day, food purchasing behaviours in the
supermarket, habit formation of health behaviours, social cognitive factors in
relation to nudges, self-monitoring, action planning, social comparison,
self-efficacy and supermarket customer satisfaction over 6 of 12 months
compared with a control arm, and acceptance of nudges and technology at 6 or 12
months.
Background summary
Lifestyle behaviours associated with increased cardiometabolic disease (CMD)
risk, such as unhealthy dietary patterns and lack of physical activity, tend to
cluster in adults with a low socioeconomic position (SEP), putting them at high
risk. Individual interventional approaches aiming to reduce CMD risk show
limited effect in populations with low SEP, as they often rely on individual
agency. Environmental interventions create opportunities for sustainable
behaviour change without much individual agency, by making the healthy choice
the easy choice.
Study objective
To evaluate the effect of environmental nudges and pricing strategies in the
supermarket, as well as a mHealth (mobile health) physical activity
intervention, primary on the dietary intake.
Study design
The trial will be performed according a parallel randomised controlled design
with the nudging and pricing interventions implemented on the supermarket level
(12 store locations) with cluster-randomisation and the physical activity
intervention randomised at the individual level across all clusters. We will
determine the effectiveness of a combination of nudging and pricing strategies
in the supermarket, with: i) control group receiving no intervention; ii)
intervention group receiving supermarket nudges and supermarket pricing
strategies. The effectiveness of the mHealth intervention aiming to improve
physical activity levels at the individual level will be investigated with: i)
control group receiving no intervention; ii) intervention group 1 receiving
mobile individualized feedback strategies to improve the number of steps per
day.
Intervention
A combination of environmental nudges, such as food product placement or
promotion, and pricing interventions in the supermarket, as well as a tailored
mHealth physical activity intervention with time- and context specific feedback
through text messages. The intervention phase will be 6 or 12 consecutive
months (depending on enrolment date) to account for seasonal variation in
shopping and physical activity behaviour.
Study burden and risks
Participants will be subjected to four measurement rounds, of which two or
three will include minimally-invasive physical examinations and questionnaires
(at baseline and after 6 months (and 12 months)), and one will include only
questionnaires (at 3 months). The participants conducts the waist circumference
measurement at home and collets the blood samples via a finger prick test at
home, collecting four drips for HbA1c and 16 drips for the lipid test.
Participants will be asked to download a mobile app and wear their phone as
much as possible for the measurement of the number of steps per day. In
conclusion, the intervention and measurements do not entail a risk for the
participants. The burden consists of the time participants need to invest in
the participation and the physical examination at 0, and 6 (and 12) months. The
benefit is that participants are informed on their cardiometabolic risk
factors, and provided with the possibly to automatically make more healthy
lifestyle choices without actively had to change their behaviours.
De Boelelaan 1089a
Amsterdam 1081 HV
NL
De Boelelaan 1089a
Amsterdam 1081 HV
NL
Listed location countries
Age
Inclusion criteria
- Aged 30-80 year
- Having low socioeconomic status (lower and secondary education as highest
completed level of educational and/or living in a social deprived
neighbourhood)
- Do their main household grocery shopping at one of the selected supermarkets
(*50% of weekly groceries purchased at the selected store, and planning on
continuing visiting for the next year);
Exclusion criteria
- Not being able to communicate adequately in the Dutch language
Design
Recruitment
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| Other | Nederlands Trial Register ID NL7064 |
| CCMO | NL69908.029.19 |