Table 1.
Selected baseline characteristics of participants by physical activity level
| Characteristics | Total | Energy expenditure in MET-minute/week
|
P-value | ||
|---|---|---|---|---|---|
| Tertile 1 | Tertile 2 | Tertile 3 | |||
| Age in years, mean (SD) | 68.8 (7.0) | 70.9 (7.4)a | 68.8 (7.0)b | 67.2 (6.0)c | <0.001 |
| Women, n (%) | 833 (60.5) | 274 (68.2) | 307 (63.4) | 252 (51.2) | <0.001 |
| <4 education years, n (%) | 872 (63.3) | 255 (63.4) | 329 (68.0) | 288 (58.5) | 0.009 |
| Current smoking, n (%) | 244 (17.7) | 70 (17.4) | 88 (18.2) | 86 (17.5) | 0.944 |
| Alcohol consumption in the last year, n (%) | 302 (21.9) | 58 (14.4) | 93 (19.2) | 151 (30.7) | <0.001 |
| Body mass index, kg/m2, mean (SD) | 25.1 (4.9) | 25.1 (5.6) | 25.2 (4.7) | 25.1 (4.5) | 0.929 |
| Systolic blood pressure, mmHg, mean (SD) | 137.4 (22.4) | 139.1 (24.9) | 137.6 (21.1) | 135.8 (21.2) | 0.088 |
| Total cholesterol, mg/dL, mean (SD) | 233.9 (48.7) | 232.5 (49.3) | 236.3 (49.4) | 232.6 (47.7) | 0.385 |
| Fasting glucose in mg/dL, mean (SD) | 108.9 (42.9) | 109.7 (37.0) | 110.2 (45.3) | 106.9 (44.8) | 0.443 |
| Stroke, n (%) | 45 (3.3) | 24 (6.0) | 9 (1.9) | 12 (2.4) | 0.001 |
| Angina, n (%) | 125 (9.1) | 38 (9.5) | 42 (8.7) | 45 (9.2) | 0.921 |
| Infarct, n (%) | 66 (4.8) | 25 (6.2) | 26 (5.4) | 15 (3.1) | 0.066 |
| Mini-Mental State Examination (MMSE) score, mean (SD) | 24.7 (4.5) | 23.7 (5.2)a | 24.7 (4.3)b | 25.4 (3.8)c | <0.001 |
| B-type natriuretic peptide (BNP), pg/dL, mean (SD) | 125.4 (166.0) | 141.1 (214.7)a | 131.3 (156.6)a,b | 106.6 (122.3)b | 0.005 |
Notes: Tertile 1: 0 to 515.0 MET-minute/week; Tertile 2: 515.1 to 1,529.9 MET-minute/week; Tertile 3: 1,530.0 to 16,765.5 MET-minute/week. Pearson chi-square test for comparisons between proportion and analysis of variance (with Bonferroni adjustment) for comparison between means; the letters a, b, c refer to the statistic differences in the analysis of variance; different letters show significant differences.
Abbreviations: MET, metabolic equivalent task; n, number enrolled in group; SD, Standard Deviation.