Table 1 Effect sizes of intervention outcomes

Haerens et al. (2007) [12], Belgium

N

N

3

Total PA level (min/day)

School-related PA (min/day)

Leisure time sport (min/day)

Leisure time active transportation (min/day)

Verstraete et al. (2006) [13], Belgium

Y

N

2

Low intensity PA (% time spent during morning recess)

*

Moderate intensity PA (% time spent during morning recess)

**

Vigorous intensity PA (% time spent during morning recess)

Moderate to vigorous PA (% time spent during morning recess)

*

Low intensity PA (% time spent during lunch break)

***

Moderate intensity PA (% time spent during lunch break)

***

Vigorous intensity PA (% time spent during lunch break)

**

Moderate to vigorous PA (% time spent during lunch break)

***

Hill et al. (2007) [11], UK

N

N

2

Exercise sessions min. 30 min/week without PE (leaflet only)

Exercise sessions min. 30 min/week without PE (leaflet plus quiz)

*

Exercise sessions min. 30 min/week without PE (leaflet + implementation intention prompt)

*

Tsorbatzoudis (2005) [14], Greece

N

N

2

End of intervention: exercise habits (score)

**

Lubans and Sylva (2006) [15], UK

N

N

1

End of intervention: moderate to vigorous PA (min/week) of 20 min. or longer

*

Murphy et al. (2006) [16], Ireland

Y

N

1

Lindberg et al. (2006) [17], Sweden

N

Y

1

Chatzisarantis and Hagger (2005) [18], UK

N

N

1

Frequency of mild, moderate and vigorous PA during leisure time in the last 5 weeks

Digelidis et al. (2003) [19], Greece

Y

Y

1

End of intervention: frequency of regular exercise in the previous month

School setting with involvement of family

Harrison et al. (2006) [20], Ireland

Y

N

3

Moderate to vigorous PA: principal PA + intensity (30 min blocks/day)

****

Haerens et al. (2007) [21], Belgium

Y

N

2

Total PA level (min/day)

School-related PA (min/day)

*

Leisure time sport (min/day)

Leisure time active transportation (min/day)

Subsample accelerometer data: PA of light intensity (min/day)

**

Subsample accelerometer data: PA of moderate to vigorous intensity (min/day)

**

Christodoulos et al. (2006) [10], Greece

Y

N

2

Organised moderate to vigorous PA (h/week)

****

Total moderate to vigorous PA (h/week)

****

School setting with involvement of family and community

Simon et al. (2006) [22], France

Y

N

2

Leisure supervised PA (%)

**

Jurg et al. (2006) [23], The Netherlands

Y

N

1

Total PA score (min/day at least moderately active)

Meeting the guidelines: 60 min/day of moderate PA (%)

*

Moon et al. (1999) [24], UK

Y

Y

1

Taking part in sports at school (not PE) once or more a week (%)

Community with involvement of schools

Baxter et al. (1997) [25], UK

Y

Y

2

Students that exercise 3 or more times weekly (%)

*

Primary care

Ortega-Sanchez et al. (2004) [26], Spain

N

N

1

6 months after 1st session: duration (min/week)

*

6 months after 1st session: frequency (days/week)

6 months after 1st session: intensity in points (mild = 1, moderate = 2, vigorous = 3)

*

12 months after 1st session: duration (min/week)

*

12 months after 1st session: frequency (days/week)

*

12 months after 1st session: intensity in points (mild = 1, moderate = 2, vigorous = 3)

*

Walker et al. (1999) [27], UK

N

Y

1

Teenagers who reported positive behaviour change (% 3 months after intervention)

Kelleher et al. (1999) [28], Ireland

N

Y

1

Exercise (times/week) by 12-15 years old

Individual

Woods et al. (2002) [29], Scotland

N

N

2

Membership of the Sport and Recreation Service at the university (%)

**