Table 3 Summary of Characteristics for Included Studies

Years of publication (range)

2004-2017

Sample size (# of participants per study )

31 - 1,352

 United States

28

 Canada

8

 Australia

8

 United Kingdom

2

 Belgium

4

 Denmark

1

 Portugal

2

 New Zealand

2

 Sweden

1

 Brazil

1

 Finland

1

 Cross-sectional

35

 Randomized controlled trial

14

 Cohort

2

 Longitudinal

1

 Validation

2

 Observational

2

 Actical

9

 Actiheart

1

 ActivPAL

2

 ActiGraph

44

 Pate et al.

19

 Sirard et al.

17

 Pfeiffer et al.

6

 Evenson et al.

7

 Van Cauwenberghe et al.

3