Table 1 Baseline characteristics of overweight/obese prediabetic participants in the intervention (Tremella fuciformis beverage) and placebo group

Demographics and anthropometric parameters

Age (years)

40.64 ± 8.39

40.61 ± 9.14

0.988^a

Male gender, number (%)

12(42.9)

14(50)

0.789^b

Family history of diabetes, number (%)

11(39.3)

8(28.6)

0.573^b

Body weight (kg)

81.56 ± 16.14

87.88 ± 19.92

0.198^a

BMI (kg/m²)

30.89 ± 5.76

32.48 ± 7.57

0.380^a

Waist circumference (cm)

 Male

102.46 ± 14.65

102.43 ± 12.64

0.996^a

 Female

89.75 ± 7.1

93.36 ± 11.06

0.291^a

Waist/hip ratio

0.87 ± 0.09

0.87 ± 0.06

0.828^a

Current smoking, number (%)

2(7.1)

3(10.7)

1.000^b

Current alcohol use, number (%)

3(10.7)

7(25)

0.295^b

Underlying disease, number (%)

 Dyslipidemia

4(14.3)

5(17.9)

1.000^b

 Hypertension

4(14.3)

8(28.6)

0.329^b

 Others

5(17.9)

7(25)

0.746^b

Metabolic and other biochemical parameters

FPG (mg/dL)

94.68 ± 11.21

92.5 ± 10.21

0.451^a

HbA1C (%)

6.03 ± 0.16

5.96 ± 0.13

0.064^a

2 h-PG (mg/dL)

143.5 ± 30.21

148.64 ± 26.12

0.499^a

Total cholesterol (mg/dL)

201.71 ± 31.3

206.82 ± 54.75

0.910^a

HDL cholesterol (mg/dL)

50.93 ± 7.12

48.11 ± 10.59

0.247^a

LDL cholesterol (mg/dL)

129.68 ± 31.6

139.71 ± 39.53

0.299^a

Triglyceride (mg/dL)

142.5 ± 86.6

134.61 ± 89.39

0.738^a

Physical activity

Moderate-to-vigorous activity (METs)

0 (0-1140)

0 (0-1650)

0.898^c

Sedentary time (hours/day)

2.36 ± 3.9

2.09 ± 2.38

0.757^a