Table 2.

Markers of inflammation and atherosclerosis in subjects with metabolic syndrome following 8-week supplementation of green tea beverage or extract versus controls¹

Variables	Green tea		No treatment		Green tea extract
N	11		11		7
Adiponectin (mg/L)
0 wk	1.9±0.3		2.4±0.4		1.6±0.3
8 wk	2.2±0.4		3.3±0.9		1.5±0.3
Conditional difference		−0.1±0.6		−0.5±0.7
P value		0.882		0.533
C-reactive protein (mg/L)
0 wk	5.1±0.9		6.1±1.2		7.4±1.5
8 wk	8.0±1.8		6.3±1.3		8.6±1.8
Conditional difference		3.2±2.2		2.7±2.2
P value		0.242		0.263
Interleukin-6 (µg/L)
0 wk	21.5±6.7		30.2±14.2		18.9±14.7
8 wk	13.5±4.1		22.9±9.4		20.5±17.6
Conditional difference		−1.9±5.9		17.6±14.2
P value		0.762		0.673
Interleukin-1β (pg/mL)
0 wk	0.20±0.04		0.20±0.03		0.25±0.1
8 wk	0.23±0.10		0.30±0.10		0.2±0.02
Conditional difference		0.01±0.02		−0.01±0.05
P value		0.622		0.913
sVCAM-1 (ng/mL)
0 wk	284.6±24.7		224.3±27.9		241.3±20.0
8 wk	286.8±32.8		201.9±20.0		314.7±44.9
Conditional difference		6.0±43.2		70.1±44.7
P value		0.892		0.173
sICAM-1 (ng/mL)
0 wk	119.0±9.10		107.6±10.8		94.8±9.30
8 wk	119.6±13.5		88.1±8.70		131.0±25.2
Conditional difference		29.1±27.2		49.0±31.0
P value		0.322		0.163
Leptin (ng/mL)
0 wk	37.9±8.0		44.0±7.2		36.3±6.5
8 wk	38.4±7.8		48.7±8.5		41.8±8.5
Conditional difference		0.7±3.4		4.5±6.9
P value		0.842		0.533
Leptin/Adiponectin
0 wk	24.9±6.5		17.6±3.9		26.7±5.5
8 wk	23.4±6.5		19.3±3.9		36.2±9.2
Conditional difference		1.6±8.9		11.3±11.5
P value		0.852		0.363
Serum amyloid A (µg/mL)
0 wk	52.7±0.6		52.0±1.3		54.2±1.1
8 wk	45.1±0.6		62.2±1.2		40.9±0.4
Conditional difference		−18.5±1.8		−21.5±1.1
P value		0.000012		0.000013

¹Values are means±SE

²p- value for paired t-test using conditional difference for Green tea versus No treatment

³p-value for paired t-test using conditional difference for Green tea extract versus No treatment