Have you ever owned a fitness tracker to track your activity or diet (e.g., Fitbit, Polar, Apple Watch)?
Current use of any app
Have you ever used health and fitness mobile apps to track your activity or diet?
Current use of any tracking device
id
What is your gender?
Age
What is your current Body Fat percentage (if you know it)?
[Football] In which Sports Team are you currently enrolled?
[Futsal] In which Sports Team are you currently enrolled?
[Volleyball] In which Sports Team are you currently enrolled?
[Handball] In which Sports Team are you currently enrolled?
[Basketball] In which Sports Team are you currently enrolled?
[Rugby] In which Sports Team are you currently enrolled?
[Waterpolo] In which Sports Team are you currently enrolled?
[Frisbee] In which Sports Team are you currently enrolled?
[Badminton] In which Sports Team are you currently enrolled?
[Track & Field] In which Sports Team are you currently enrolled?
[Table Tennis] In which Sports Team are you currently enrolled?
[Tennis] In which Sports Team are you currently enrolled?
[Archery] In which Sports Team are you currently enrolled?
[Swimming] In which Sports Team are you currently enrolled?
Team
Sampling weights based on team
Sport category
BMI
BMI category
What is your current waist circumference (in cm), if you know it?
Phone OS
Do you own at least one smartphone?
[Fitbit] Which brand/make have you owned?
[Garmin] Which brand/make have you owned?
[Apple watch] Which brand/make have you owned?
[Polar] Which brand/make have you owned?
[Misfit] Which brand/make have you owned?
[Samsung Gear Fit watch] Which brand/make have you owned?
[Moov now] Which brand/make have you owned?
Other brand
[Other] Which brand/make have you owned?
Are you currently using the Fitbit model
Are you currently using the Polar model
Are you currently using the Garmin model
Are you currently using the Apple Watch model
Are you currently using the Misfit model
Are you currently using the Samsung Gear model
Are you currently using the Moov now model
Are you currently using the other model
[Blackberry] On the smartphone you use the most, which is the operative system?
[Android] On the smartphone you use the most, which is the operative system?
[iOS] On the smartphone you use the most, which is the operative system?
[Windows mobile] On the smartphone you use the most, which is the operative system?
[MyFitnessPal] Have you ever used one of the following apps to track your activity or diet?
[SportsTracker] Have you ever used one of the following apps to track your activity or diet?
[Strava] Have you ever used one of the following apps to track your activity or diet?
[Freeletics Gym/Bodyweight] Have you ever used one of the following apps to track your activity or diet?
[Endomondo] Have you ever used one of the following apps to track your activity or diet?
[Runtastic] Have you ever used one of the following apps to track your activity or diet?
[Pacer] Have you ever used one of the following apps to track your activity or diet?
[Lifesum] Have you ever used one of the following apps to track your activity or diet?
[GetFit] Have you ever used one of the following apps to track your activity or diet?
[BetterMe] Have you ever used one of the following apps to track your activity or diet?
[Apple Healthkit] Have you ever used one of the following apps to track your activity or diet?
[Samsung Health] Have you ever used one of the following apps to track your activity or diet?
Other
[Other] Have you ever used one of the following apps to track your activity or diet?
Current use: MyfitnessPal
Current use: SportsTracker
Current use: Strava
Current use: Freeletics
Current use: Endomondo
Current use: Runtastic
Current use: Pacer
Current use: Lifesum
Current use: GetFit
Current use: BetterMe
Current use: Apple Health Kit
Current use: Samsung Health
Current use: Other app