Study protocol.

(PDF)</p

Baseline characteristics of participants, by group (N = 477).

Baseline characteristics of participants, by group (N = 477).</p

Sensitivity analysis.

(PDF)</p

Effects of intervention on Body Mass Index, physical activity and fruit and vegetable intakes, by group (n = 477).

Effects of intervention on Body Mass Index, physical activity and fruit and vegetable intakes, by group (n = 477).</p

Flowchart of participation.

Flowchart of participation.</p

CONSORT 2010 checklist of information to include when reporting a randomised trial*.

(PDF)</p

Data repository.

(XLSX)</p

Text-based message and letter.

(PDF)</p

Time effect for Body Mass Index, physical activity and fruit and vegetable intakes, by group.

Time effect for Body Mass Index, physical activity and fruit and vegetable intakes, by group.</p

One and three-month follow-up visitations with General Practitioner (GP) and other health professionals, by group (N = 477).

One and three-month follow-up visitations with General Practitioner (GP) and other health professionals, by group (N = 477).</p