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Table 1 Characteristics of studies included

From: Effect of lifestyle modifications on anthropometric, clinical, and biochemical parameters in adolescent girls with polycystic ovary syndrome: a systematic review and meta-analysis

Author (year)

setting

Study design

Sample size

Groups

(mean age and bmi)

PCOS diagnosis criteria

Life style modification

Follow up duration

outcome

Main result

Wong et al.,

2016

USA

RCT

19

Group 1: patient with diet intervention and Weight loss n = 9

Mean age:16.3 ± 2.2

Mean BMI baseline: 32.80 ± 3.20

Mean BMI after:30.9 ± 3.70

Group 2: patient with diet intervention and non-Weight loss n = 10

Mean age:15.4 ± 1.3

Mean BMI baseline:36.50 ± 4.30

Mean BMI after:36.10 ± 4.70

Androgen Excess Society

Diet

LGL (45% carbohydrate, 35% fat, 20% protein) or LF (55% carbohydrate, 25% fat, 20% protein) diet

6 months

BMI, BP,FBS

FBI,SHBG,TG

HDL, LDL,TT

FT, BT

↓BMI

Lass et al.,

2011

German

NRS

59

Group 1: patient with lifestyle intervention and Weight loss n = 26

Mean age:14.9 ± 0.8

Mean BMI baseline:32.20 ± 3.70

Mean BMI after:28.30 ± 3.40

Group 2: patient with lifestyle intervention and non-Weight loss n = 33

Mean age:15.1 ± 0.7

Mean BMI baseline:33.90 ± 6.8

Mean BMI after:34.60 ± 6.90

National Institutes of Health

Diet

30% fat, 15% proteins, and 55% carbohydrates including 5%

sugar

Exercise

dancing, ball games, jogging, trampoline jumping

Behavior

12 months

BMI, BP,FBS

FBI, SHBG

HOMA, TG

HDL, LDL, FSH

LH, FT, AFI

↓BMI, ↓TG, ↓HOMA, ↓testosterone, ↓FAI, ↓LH, ↓systole and ↓diastole blood pressure

Reinehr et al., 2017

German

NRS

20

Group 1: patient with lifestyle intervention and Weight loss n = 10

Mean age:: 14.9 ± 1.4

Mean BMI baseline:32.20 ± 4.10

Mean BMI after: 27.40 ± 2.5

Group 2: patient with lifestyle intervention and non-Weight loss n = 10

Mean age:15 ± 1.2

Mean BMI baseline:31.40 ± 4.90

Mean BMI after:33.30 ± 6.6

Endocrine Society proposed

Diet

30% fat, 15% proteins, and 55% carbohydrates including 5%

sugar

Exercise

dancing, ball games, jogging, trampoline jumping

Behavior

12 months

BMI, SHBG

HOMA, FSH

LH, FT, AFI

AMH

↓BMI, ↓LH, ↑SHBG, ↓FAI, ↓HOMA, ↓AMH

Hoeger et al.,

2008

USA

RCT

18

Group 1: patient with lifestyle intervention n = 8

Mean age: 15.4 ± 1.2

Mean BMI baseline:36 ± 6.20

Mean BMI after: 34.90 ± 7

Group 2: patient with no intervention (control) n = 10

Mean age: 15.4 ± 1.7

Mean BMI baseline:34.90 ± 6.7

Mean BMI after: 34.90 ± 6.70

Rotterdam criterion

Diet

Hypo caroric diet with 500 kcal/d deficit

Exercise:30 min/d of

moderate to intense activity

6 months

BMI, BP,FBS

FBI, TG, SHBG

HDL, LDL, TT

AFI, FG

↓FAI, ↑SHBG, ↓Diastolic blood pressure

Ornestein et al.,

2011

Chicago

RCT

16

Group 1: patient with diet intervention

n = 16

Mean age: 15.8 ± 2.2

Mean BMI baseline: 35.70 ± 6

Mean BMI after: 32.90 ± 5.80

Rotterdam criterion

Diet:Low fat

less than 40 g per day of fat, with five servings

of starch per day and an ad libitum intake of fat-free dairy

foods, fruits, vegetables

low carbohydrate:

40 g carbohydrate

daily by adding low glycemic index foods, such as nuts, fruits,

And whole grains.

3 months

BMI

↓BMI

Ladson et al.,

2011

USA

RCT

11

Group 1: patient with lifestyle intervention n = 11

Mean age: 15.4 ± 1.2

Mean BMI baseline: no reported

Mean BMI after: no reporte

National Institutes of Health

Diet:

55% carbohydrate, 30% fat, and

15% protein.

Exercise: 35–45 stair stepper, stationary

bike, elliptical machine, treadmill, or dancing to music

6 months

BP, FBS, FBI

HOMA, TG

SHBG, HDL

LDL, FSH

LH, BT,AFI

No significant difference in all of measurement outcome

Nidhi et al.,

India

2012

RCT

71

Group 1: patient with yoga intervention

n = 42

Mean age:16.22 ± 1.13

Mean BMI baseline:20.22 ± 1.65

Mean BMI after:20.11 ± 1.70

Group 2: patient with exercise intervention n = 43

Mean age:16.22 ± 0.93

Mean BMI baseline:21.28 ± 3.05

Mean BMI after: 21.59 ± 2.78

Rotterdam criterion

Exercise:

A yoga

suryanamaskara, asanas, pranayama, and meditation

3 months

BMI, FBS,FBI

HOMA, TG

HDL, LDL

↓FBS, ↓HOMA, ↓TG, ↓LDL

Nidhi et al.,

India

2013

RCT

72

Group 1: patient with lifestyle intervention n = 45

Mean age: 16.22 ± 1.13

Mean BMI baseline:20.39 ± 2.60

Mean BMI after:20.41 ± 2

Group 2: patient with no intervention (control) n = 45

Mean age:16.22 ± 0.93

Mean BMI baseline:21.39 ± 3.20

Mean BMI after:21.70 ± 2.88

Rotterdam criterion

Exercise:

A yoga

suryanamaskara, asanas, pranayama, and meditation

3 months

BMI, FSH, LH

TT, AMH, FG

menstrual period

↓TT, ↓LH, ↓AMH, ↓FG,

menstural period improve

Carolo et al.,

2017

Brazil

NRS

18

Group 1: patient with lifestyle intervention and Weight loss n = 9

Mean age:16.56 ± 1.33

Mean BMI baseline:88.10 ± 13.3

Mean BMI after:81.40 ± 11.20

Group 2: patient with diet intervention and non-Weight loss n = 9

Mean age:16 ± 1.66

Mean BMI baseline:78.70 ± 17.30

Mean BMI after:84.8 ± 20.7

Endocrine Society

Diet

55–75% of carbohydrate, 10–15% of

Protein and 15–30% of total fat.

6 months

BMI

Dietary interventions were not beneficial for BMI improve.

Rofey et al.,

2009

USA

NRS

12

Group 1: patient with lifestyle intervention n = 12

Mean age: 15.8

Mean BMI baseline:39 ± 9

Mean BMI after:35 ± 6

National Institutes of Health

Behavior:

cognitive–behavioral therapy (CBT)

Exercise:

(yoga instructor, local swim coach, climbing wall supervisor)

3 months

BMI

↓ BMI.

Marzouk et al.,

2015

Egypt

RCT

60

Group 1: patient with diet intervention

n = 30

Mean age:19.3 ± 1.3

Mean BMI baseline:36.4 ± 4.7

Mean BMI after:33.20 ± 3.8

Group 2: patient with no intervention (control)

n = 30

Mean age:20.1 ± 1.8

Mean BMI baseline:35.8 ± 4.8

Mean BMI after:35.7 ± 4.67

Rotterdam criterion

Diet

15–20% of protein, 30%

of fat, 50–55% of carbohydrates

6 months

BMI, FG

menstrual period

↓ BMI, ↓FG, menstrual period improve.

  1. PCOS polycystic ovarian syndrome; BMI body mass index; FSH Follicle-stimulating hormone; LH Luteinizing Hormone; FBS fasting blood sugar; HOMA Homeostatic model assessment; FBI Fasting blood index; TG Triglyceride; LDL Low-density lipoprotein; HDL High-density lipoprotein; SHBG Sex Hormone Binding Globulin; TT total testosterone; FT free testosterone; BT bioavailable testosterone; FAI free androgen index; AMH Anti-Müllerian hormone; BP Blood pressure; FG Ferriman-Gallwey; LF Low Fat; LGL Low Glycemic Load