Table 2.
Changes in variables according to coffee and green tea consumption.
| Coffee | Green tea | |||||
|---|---|---|---|---|---|---|
| Baseline | End of consumption | Change (95% CI) | Baseline | End of consumption | Change (95% CI) | |
| BMI (kg/m2) | 21.2 ± 2.5 | 21.3 ± 2.4 | 0.1 (0.0–0.2) | 21.4 ± 2.5 | 21.2 ± 2.5 | −0.2 (−0.3–0.0) |
| SBP (mm Hg) | 118 ± 16 | 119 ± 11 | 0.7 (−5.9–7.4) | 121 ± 11 | 116 ± 9.3* | −0.5 (−9.6–−0.3) |
| DBP (mm Hg) | 75 ± 8.8 | 77 ± 9.1 | 2.5 (−1.2–6.2) | 78 ± 8.9 | 76 ± 7.4 | −1.7 (−6.9–3.4) |
| Total cholesterol (mg/dL) | 174 ± 22 | 175 ± 26 | 1.7 (−5.1–8.6) | 176 ± 19 | 170 ± 22 | −5.4 (−12.5–1.7) |
| HDL-cholesterol (mg/dL) | 66 ± 15 | 67 ± 14 | 0.6 (−2.6–3.7) | 65 ± 13 | 66 ± 13 | 0.4 (−2.2–3.1) |
| Triglycerides (mg/dL) | 70 ± 33 | 86 ± 52 | 16.4 (−2.8–35.7) | 79 ± 38 | 72 ± 46 | −6.3 (−25.5–12.9) |
| Blood glucose (mg/dL) | 84 ± 10 | 84 ± 9.4 | 0.1 (−5.1–5.3) | 87 ± 5.6 | 84 ± 7.9* | −3.4 (−6.8–−0.1) |
| HbA1c (%, NGSP) | 5.1 ± 0.2 | 5.0 ± 0.2∗,a | −0.1 (−0.1–0.0) | 5.1 ± 0.2 | 5.0 ± 0.2* | −0.1 (−0.1–0.0) |
| Uric acid (mg/dL) | 5.2 ± 1.2 | 5.2 ± 1.1 | 0.1 (−0.2–0.3) | 5.1 ± 1.1 | 5.1 ± 1.3 | 0.0 (−0.3–0.2) |
| Blood urea nitrogen (mg/dL) | 14.3 ± 3.3 | 13.6 ± 2.7 | −0.7 (−2.1–0.7) | 13.6 ± 3.4 | 13.1 ± 3.2 | −0.5 (−2.1–1.2) |
| Serum creatinine (mg/dL) | 0.72 ± 0.16† | 0.72 ± 0.17 | 0.00 (−0.02–0.02) | 0.70 ± 0.15 | 0.71 ± 0.17 | 0.01 (−0.01–0.02) |
| Creatinine based-eGFR (mL/min/1.73 m2) | 99.6 ± 16.4 | 99.6 ± 16.6 | 0.0 (−3.4–3.4) | 102.0 ± 15.9 | 102.0 ± 19.0 | 0.1 (−2.9–3.0) |
| Serum cystatin C (mg/L) | 0.83 ± 0.12† | 0.79 ± 0.10** | −0.04 (−0.06–−0.02) † | 0.79 ± 0.12 | 0.79 ± 0.12 | −0.01 (−0.03–0.02) |
| Magnesium (mg/dL) | 2.3 ± 0.1 | 2.4 ± 0.2∗,† | 0.1 (0.0–0.1) | 2.3 ± 0.1 | 2.3 ± 0.2 | 0.0 (0.0–0.1) |
| Adiponectin (μg/mL) | 11.0 ± 4.7 | 12.5 ± 5.3** | 1.5 (0.6–2.4) | 10.5 ± 4.6 | 11.7 ± 5.0 | 1.1 (−0.6–2.9) |
Data are expressed as means ± SD. Changes in variables are expressed as means (95% CI).
*P < .05, **P < .01, End of consumption versus baseline (repeated ANOVA), † P < .05, versus green tea (Paired t-test).
a difference was examined by Wilcoxon rank test because normal distribution was not confirmed.
BMI: body mass index, SBP: systolic blood pressure, DBP: diastolic blood pressure, HDL: high-density lipoprotein, eGFR: estimated glomerular filtration rate.