Table 1.

General characteristics of included studies

Author (year)	Subjects and gender	Age range (y)	Design	Medication dosage (g/day)	Duration (week)	Outcomes	Outcome		Any other intervention	Notes about subjects	type of treatment of control group
							Intervention Mean ±SD	Control Mean ± SD
Wood et al. [29]	30 Men20-69	20-69	parallel	3	12	FBS	Before mmol/L): 5.09 ±0.83	Before (mmol/L): 5.15±0.63	carbohydraterestricted diet	30 overweight and obese men	carbohydraterestricted diet
							After (mmol/L):4.8 ±0.64	After (mmol/L): 5.01±0.56
Vuksan et al. [23]	11men/women	45–65	crossover8	8-13	8	FBS	Before (mmol/L):6.8±1.65	Before (mmol/L):6.6± 0.99	-	11 subjects with impaired glucose tolerance	wheat bran
							After (mmol/L):5.9±0.99	After (mmol/L):5.9±1.32
Chen et al. [21]	22men/women	52–77	crossover	3.6	8	FBS	(FBS)	(FBS)	-	22 subjects with hyperlipide mia and type 2 diabetes	Placebo
						PPG
							Before(mmol/L):9.4±2.3	Before(mmol/L):8.7±1.8
							After (mmol/L): 8±1.8	After (mmol/L):9.6±2.4
							(PPG) Before (mmol/L):13.8±4,6	(PPG) Before (mmol/L):13±3.7
							After (mmol/L):11.5±3.2	After (mmol/L):14.3±4.3
Vuksan et al. [25]	11 men/women	45–65	crossover	15	8	FBS	Before (mmol/L): 9.63±2.95	Before (mmol/L):9.29±2.45	-	11 subjects with hyperlipidemia and type 2 diabetes	Wheat bran
							After (mmol/L):8.62±3.15	After (mmol/L): 8.99±2.58
Chearskul et al. [18]	20 Men/women	30-70	crossover	3	10	FBS	(FBS)	8.8±0.26	-
						PPG	Before (mmol/L):9.1±3.3	After (mmol/L):9.05±2.41 (PPG)
							After (mmol/L):8.83±3.08PPG)	Before (mmol/L): 16.89±3.89
							Before(mmol/L):17.36±4.02	After (mmol/L):17.18±4.29
							After (mmol/L):17.13±4.42
Zhang et al [34]	30 Men/women	19-65	crossover	6	4	FBS	(FBS) Before (mmol/L): 5.1±0.79	(FBS) Before (mmol/L):5.08±0.81	-	30 subjects with schizophre nia and dyslipidemia	Placebo
							After (mmol/L):5.11±1.14	After (mmol/L):5.27±0.87

Abbreviations: FBS, fasting blood glucose; PPG, post parandial glucose; SD, standard deviation