Table 2 Overview of research activities, tools, and output and outcome measurements at multiple levels

Research question 1

Body measurements^a

 Height (cm)

 Weight (kg)

 BMI (kg/m²)

 Waist circumference (cm)

 Fat (%)

 VO2max

 Blood pressure (mmHG)

Focus groups (APEF tool) (T1 and T2)

 PA maintenance

 Motivation

 Societal participation

 Appreciation of X-Fittt 2.0

 Appreciation of

 professional guidance

 Appreciation of PA in group

Concept model and logic model (see research question 2)

Questionnaires^a

 Demographics (country of birth,

 education, household composition,

 daily activities, income)

 Lifestyle (smoking and alcohol)

 Quality of life (EQ-5D-3L, EQ-VAS)

 Diseases and healthcare use

 Monitoring of PA

 Societal participation (USER-P)

 Appreciation of professional guidance

 Appreciation of PA in group

In-depth interviews

 PA maintenance

 Motivation

 Societal participation

 Appreciation of X-Fittt 2.0

 Appreciation of

 professional guidance

 Appreciation of PA in group

Research question 2

In-depth interviews (see research question 1)

Focus groups (see research question 1)

Concept mapping and logic model

 Literature research

 2 brainstorming sessions

 5 interviews with HiAP experts

 Discussion in follow-up meetings

Local capacity mapping

 Interviews with professionals

 Workshops in each municipality

 (Timeline technique)

Research question 3

X-Fittt 2.0 participants will be invited to effectiveness arenas

Direct costs analysis

 Description of costs and benefits

 Estimation average costs per activity

 Healthcare consumption

Perceived benefits and costs

 5 focus groups (effective arena)

Research question 4

Alternative funding model

 Literature research to identify models

 2 expert meetings to choose model

 2 workshops (in each municipality)