Characteristic Study ID	Intervention(s) and control(s)	Participating population	Sex [female %]	Age [mean years (SD)]	Body weight [mean, kg]	BMI [mean, kg/m2]	Ethnic groups [%]
Auvichayapat 2008	I1: green tea extract C1: placebo	I1: 30 C1: 30	I1: 70 C1: 70	I1: 49 (6) C1: 49 (5)	I1: 69.30±9.54 C1: 71.90±11.70	I1: 27.42±3.26 C1: 28.00±3.51	Note: participants described as "Thai", but we cannot be sure of complete ethnic background of participants
Diepvens 2005	I1: green tea C1: placebo	I1: 23 C1: 23	I1: 100 C1: 100	I1: 42 (9) C1: 42 (10)	I1: 76.4 (SD 6.3) C1: 76.3 (SD 6.6)	I1: 27.7 (SD 1.8) C1: 27.7 (SD 1.8)	‐
Hill 2007	I1: green tea extract C1: placebo	I1: 19 C1: 19	I1: 100 C1: 100	‐	I1: 79.92±1.73 C1: 81.05±2.01	I1: 30.65±0.59 C1: 31.39±0.73	‐
Hsu 2008	I1: green tea extract C1: placebo	I1: 41 C1: 37	I1: 100 C1: 100	I1: 43 (11) C1: 44 (13)	I1: 78.5 (SD 10.3) C1: 76.3 (SD 14.5)	I1: 31.2 (SD 3.5) C1: 30.5 (SD 4.6)	‐
Hursel 2009	I1: green tea‐caffeine mixture + AP diet I2: green tea‐caffeine mixture + HP diet C1: placebo + AP diet C2: placebo + HP diet	I1: 20 I2: 20 C1: 20 C2: 20	I1: 55 I2: 55 C1: 55 C2: 55	I1: 44 (2) I2: 44 (2) C1: 44 (2) C2: 44 (2)	I1: 85.1 ±7.6 I2: 85.0±7.4 C1: 85.1±7.8 C2: 85.0±7.3	I1: 29.6±2.1 I2: 29.5±2.0 C1: 29.6±2.1 C2: 29.5±1.9	‐
Kajimoto 2005	I1: catechin drink – low dose group I2: catechin drink – high dose group C1: placebo drink	I1: 65 I2: 64 C1: 66	T: 50	‐	I1: 68.4±1.1 I2: 68.4±1.1 C1: 68.7±1.1	I1: 25.6±0.2 I2: 25.7±0.2 C1: 25.7±0.3	Note: participants described as "Japanese", but we cannot be sure of complete ethnic background of all participants
Kataoka 2004	I1: catechin beverage 278 mg I2: catechin beverage 570 mg: I3: catechin beverage 845 mg C1: control beverage	I1: 25 I2: 71 I3: 25 C1: 71	I1: 0 I2: 0 I3: 0 C1: 0	I1: 40 (2) I2: 39 (1) I3: 39 (2) C1: 39 (1)	I1: 72.6±0.9 I2: 73.8±1.1 I3: 71.8±2.3 C1: 73.4±1.0	I1: 24.3±0.4 I2: 25.1±0.3 I3: 24.6±0.7 C1: 24.9±0.3	‐
Kovacs 2004	I1: green tea C1: placebo	I1: 51 C1: 53	I1: 71 C1: 79	‐	I1: 85.1 (SD 11.5) C1: 85.4 (SD 10.3)	I1: 29.7 (SD 2.9) C1: 29.7 (SD 2.3)	‐
Kozuma 2005	I1: catechin beverage C1: placebo beverage	I1: 107 C1: 119	I1: 50 C1: 54	I1: 56 (1) (female), 43 (2) (male) C1: 55 (1) (female), 40 (2) (male)	I1: 63.42±0.79 C1: 5.04±0.92	I1: 26.73±0.26 C1: 27.12±0.29	Note: study took place in Japan, but we cannot be sure of complete ethnic background of all participants, as no information is provided
Maki  2009	I1: green tea beverage C1: control beverage	I1: 65 C1: 63	I1: 50.8/49.2 C1: 44.4/55.6	I1: 47 (1) C1: 49 (1)	I1: 95.1± 1.7 C1: 95.1±1.7	I1: 32.2±0.5 C1: 32.2±0.5	I1: Non‐Hispanic White: (90.8) African‐American: (6.2) Hispanic:  (3.1) Other: (0)   C1: Non‐Hispanic White: (92.1) African‐American: (3.2) Hispanic: 3.2% Other: (1.6)
Nagao 2007	I1: brewed green tea beverage with added catechins C1: brewed green tea beverage with no added catechins	I1: 123 C1: 117	I1: 41.5/58.5 C1: 41.9/58.1	‐ T: 42 (10)	I1: 73.3 (SD 9.7) C1: 72.1 (SD 10.0)	I1: 26.9 (SD 1.9) C1: 26.7 (SD 2.1)	Note: participants described as "Japanese", but we cannot be sure of complete ethnic background of all participants
Suzuki 2009	I1: tea catechin C1: placebo	I1: 18 C1: 20	I1: 100/0 C1: 100/0	I1: 45 (11) C1: 48 (10)	I1: 64.5±5.6 C1: 63.3±7.2	I1: 26.2±1.5 C1: 25.8±1.7	Note: study took place in Japan, but we cannot be sure of complete ethnic background of all participants, as no information is provided
Takase 2008	I1: catechin beverage C1: placebo beverage	I1: 44 C1: 45	I1: 100/0 C1: 100/0	I1: 48 (6) C1: 48 (6)	I1: 67.2±6.6 C1: 66.9±6.1	I1: 27.7±1.5 C1: 27.7±1.6	Note: participants described as "Japanese women", but we cannot be sure of complete ethnic background of all participants
Takashima 2004	I1: catechin beverage C1: control beverage	I1: 10 C1: 9	I1: 0/100 C1: 0/100	‐ T: 38 (1)	I1: 71.4±2.3 C1: 72.5±2.5	I1: 23.7±0.6 C1: 24.3±0.8	‐
Takeshita 2008	I1: catechin beverage C1: placebo beverage	I1: 40 C1: 41	I1: 0/100 C1: 0/100	I1: 40 (12) C1: 41 (9)	I1: 82.3±9.9 C1: 82.8±10.1	I1: 27.8±2.3 C1: 28.0±2.6	Note: participants described as "Japanese males", but we cannot be sure of complete ethnic background of all participants
Tsuchida 2010	I1: catechin beverage C1: control beverage	I1: 39 C1: 41	I1: 48.7/51.3 C1: 43.9/56.1	Note: T: females 545, males 42 not divided by group: 43 males aged 30 ‐ 62 (mean age 42) 37 post‐menopausal women aged 43 ‐ 65 (mean age 55)	I1: 70.68±1.85 C1: 70.36±2.00	I1: 26.43±0.37 C1: 26.06±0.31	‐
Wang 2010	I1: GT1 I2: GT2 I3: GT3 C1: C	I1: 47 I2: 49 I3: 43 C1: 43	‐ T: 73.1/26.9	I1: 37 (9) I2: 37 (10) I3: 38 (9) C1: 37 (9)	I1: 71.4 (SD 9.8) I2: 71.5 (SD 11.8) I3: 71.1 (SD 11.9) C1: 69.7 (SD 8.9)	I1: 27.1 (SD 2.2) I2: 27.2 (SD 2.5) I3: 26.8 (SD 2.2) C1: 26.8 (SD 2.0)	Note: participants described as "Chinese subjects", but we cannot be sure of complete ethnic background of all participants
Westerterp‐ Plantenga 2005	I1: green tea‐caffeine capsule ‐ low habitual caffeine consumers I2: green tea‐caffeine capsule ‐ high habitual caffeine consumers C1: placebo ‐ low habitual caffeine consumers C2: placebo ‐ high habitual caffeine consumers	I1: 19 I2: 19 C1: 19 C2: 19	‐ T: 69.7/30.3	‐	I1: 85.1±9.5 I2: 85.0±8.5 C1: 85.1±9.6 C2: 85.0±8.3	I1: 29.6±2.6 I2: 29.5±2.4 C1: 29.6±2.7 C2: 29.5± 2.2	‐
Footnotes "‐" denotes not reported AP: adequate protein; BMI: body mass index; C: control; HP: high protein; I: intervention