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Table 1 Characteristics of included literature

From: Systematic review and meta-analysis of the effects of exercise on depression in adolescents

Name

Country

Population

Mean age

(year)

Sample size

N (female %)

Exercise group

Control group

Outcome

Effect of exercise and follow-up points

Type

Exercise program duration

(week)

Exercise session duration

(min)

Frequency

(sessions/week)

Brown et al. (1992)

United States

1. Diagnosed at mental health center;

2. Depression

15.60

27 (41%)

Aerobic exercise

(jogging)

9

45

3

Conventional treatment

BDI

Significant

▲: 11; : 5

No adverse events

Roshan et al. (2011)

Iran

1. Diagnosed at hospital;

2. Depression

16.87

24 (100%)

Aerobic exercise

(walking in water)

6

30

3

Conventional treatment

HAMD

Significant

▲: 0; : 0

No adverse events

Hughes et al. (2013)

United States

1. Diagnosed at outpatient clinic;

2. Depression

17.00

26 (42%)

Aerobic exercise

(jogging/power bike)

12

30

3

Conventional treatment

CDRS-R

1. Not significant at 3/12 weeks and significant at 6/9 weeks

2. Follow-up: 24/48 weeks

3. ▲: 0; : 0

4. No adverse events

Carter et al. (2015)

United Kingdom

1. Diagnosed at mental health center;

2. Depression

15.40

87 (78%)

Aerobic exercise

(aerobics)

6

45

3

Conventional treatment

CDI-2

1. Not significant

2. Follow-up: 24 weeks (significant)

3. ▲: 8; : 14

4. No adverse events

Wunram et al. (2017a)

Germany

1. Diagnosed at inpatient department;

2. Depression

15.80

44 (77%)

Whole-body muscle vibration training

6

30

4

Conventional treatment

DIKJ

1. Not significant

2. Follow-up: 14 /26 weeks (the second of which was significant)

3. ▲: 3; : 6

4. No adverse events

Wunram et al. (2017b)

Germany

1. Diagnosed at inpatient department;

2. Depression

15.90

43 (72%)

Aerobic exercise

(power bike)

6

30

4

Conventional treatment

DIKJ

1. Not significant

2. Follow-up: 14 /26 weeks (the second of which was significant)

3. ▲: 3; : 6

4. No adverse events

Hilyer et al. (1982)

United States

1. Recruited at school for young offenders;

2.Depressive symptoms

17.00

60 (-)

Resistance + aerobic exercise

20

90

3

Conventional treatment

BDI

Significant

▲: 0; : 0

No adverse events

MacMahon et al. (1988a)

United States

1. Recruited at juvenile detention center;

2.Depressive symptoms

15.60

39 (-)

Aerobic exercise

(aerobics)

12

40

3

Regular activities

BDI

Significant

▲: 0; : 0

No adverse events

MacMahon et al. (1988b)

United States

1. Recruited at juvenile detention center;

2.Depressive symptoms

17.20

30 (-)

Aerobic exercise

(aerobics)

12

40

3

Regular activities

BDI

Significant

▲: 0; : 0

No adverse events

Bonhauser et al. (2005)

Chile

1. 9th grade public junior high school students;

2. Depressive symptoms

15.53

198 (52%)

Aerobic exercise

40

90

3

Regular activities

HADS

Not significant

▲: 8; : 7

No adverse events

Mohammadi. (2011a)

Iran

1. Public high school students;

2. Depressive symptoms

16.60

60 (-)

Aerobic exercise

(group aerobic exercise)

8

75

3

Conventional treatment

BDI

Significant

▲: 0; : 0

No adverse events

Mohammadi. (2011b)

Iran

1. Public high school students;

2. Depressive symptoms

16.60

60 (-)

Aerobic exercise

(personal aerobic exercise)

8

75

3

Conventional treatment

BDI

Significant

▲: 0; : 0

No adverse events

Jeong et al. (2005)

Korea

1. Girls’ high school students;

2. Depressive symptoms

16.00

40 (100%)

Aerobic exercise

(aerobic dance)

12

45

3

Conventional treatment

SCL-90-R

Significant

▲: 0; : 0

No adverse events

Khalsa et al. (2012)

United States

1. 11/12th grade senior high school students in rural school;

2. Depressive symptoms

16.80

121 (42%)

Self-designed yoga

11

30

2

Regular activities

POMS-SF

Not significant

▲: 3; : 17

No adverse events

Noggle et al. (2012)

United States

1. 11/12th grade senior high school students in rural school;

2. Depressive symptoms

17.20

51 (57%)

Kripalu Yoga

10

40

3

Regular activities

POMS-SF

Not significant

▲: 0; : 0

No adverse events

Velasquez et al. (2015)

Colombia

1. Public junior high school students;

2. Depressive symptoms

13.20

125 (-)

Satyananda Yoga

12

120

2

Regular activities

SDQ

Not significant

▲: 11; : 0

No adverse events

Butzer et al. (2017)

United States

1. 7th grade public junior high school students;

2. Depressive symptoms

12.64

209 (63%)

Kripalu Yoga

16

45

2

Regular activities

BRUMS

1. Significant

2. Follow-up: 24/48 weeks

3. ▲: 4; : 0;

4. No adverse events

Costigan et al. (2016a)

Australia

1. Public junior high school students;

2. Depressive symptoms

15.65

43 (-)

Aerobic exercise

(aerobic running and jumping)

8

8

3

Regular activities

K-10

Not significant

▲: 2; : 0;

No adverse events

Costigan et al. (2016b)

Australia

1. Public junior high school students;

2. Depressive symptoms

15.55

44 (-)

Resistance + aerobic exercise

8

8

3

Regular activities

K-10

Not significant

▲: 1; : 0;

No adverse events

  1. BDI  Beck Depression Inventory, HAMD Hamilton Depression Scale, CDRS- R Childhood Depression Rating Scale-Revised; CDI-2 Children’s Depression Inventory-2, DIKJ Depressionsinventar für Kinder und Jugendliche (German version of CDI-2), HADS Hospital Anxiety and Depression Scale, SCL-90-R Symptom Checklist-90 -Revised; POMS-SF Profile of Mood States-Short Form, BRUMS Brunel University Mood Scale, SDQ Strengths and Difficulties Questionnaire, K10 Kessler Psychological Distress Scale. Number of dropouts in experiment group: ▲; Number of dropouts in control group: . Exercise intensity: 60–70% maximum heart rate (HRmax); Self-selected intensity, ≤ 80% HRmax; 120–160 beats/min;  ≥ 85% HRmax
  2. “a” represents the first comparison. b represents the second comparison.