Table 1 Performance objectives for fruit consumption

Phase I: pre-action

PO1: Individuals monitor their own fruit consumption.

PO2: Individuals compare their fruit consumption with the recommendations.

PO3: Individuals recognize the importance of increasing their fruit consumption.

PO4: Individuals decide to increase their fruit consumption.

PO5: Individuals prepare their behavior change:

-PO5a: Individuals set a challenging, but feasible goal to increase fruit consumption

-PO5b: Individuals make action plans for their behavior change.

Phase II: action

PO6: Individuals start changing their behavior: they eat more fruit and/or eat fruit more often.

PO7: Individuals keep track of situations that caused failure.

Phase III: evaluation

PO8: Individuals evaluate the achievement of their goals:

When behavioral goal has not been reached, individuals choose to:

-PO8a: Continue with their behavioral goal (depending on reasons of failure);

-PO8b: Adjust their action plan for the same behavior change goal;

-PO8c: Adjust their goal for fruit consumption;

-PO8d: Set a new behavioral goal for another target behavior (i.e. vegetables, high-energy snacks or fat)

When behavioral goal has been reached, individuals choose to:

-PO8e: Adjust their behavioral goal, in order to improve their fruit consumption even more (for example, when their goal was to eat one piece of fruit instead of zero, they can change their goal to eating two pieces of fruit);

-PO8f: Set a behavioral goal for another target behavior (i.e. for vegetables, high-energy snacks or fat).

PO9: Individuals maintain the increase in fruit consumption:

-PO9a: Individuals keep monitoring their fruit consumption;

-PO9b: Individuals take action when they diverge from behavioral goal.