Table 1 Comparison of baseline clinical characteristics between low VO2 and high VO2 groups
|  | VO2 low (n = 101) | VO2 high (n = 79) | Total (n = 180) | p value |
|---|---|---|---|---|
Age (year) | 78 (74–80) | 73 (69–78) | 77 (71–80) | < 0.0001 |
Female | 45 (44.6%) | 33 (41.8%) | 78 (43.3%) | 0.763 |
Weight (kg) | 61.5 (55.3–68.7) | 60 (50.0–64) | 60.4 (54.35–67.6) | 0.014 |
Height (cm) | 160 (153-165.2) | 159.5 (154–166) | 160 (153.5–166) | 0.71 |
Body mass index (kg/m2) | 24.2 (22.6–26.5) | 22.8 (21.0-24.5) | 23.7 (21.9–25.6) | 0.0003 |
Waist circumference (cm) | 90 (86–87) | 86 (78–89) | 88 (83–93) | < 0.0001 |
Systolic blood pressure (mmHg) | 144 (129–160) | 146 (130–156) | 145.5 (129-156.5) | 0.67 |
Diastolic blood pressure (mmHg) | 76 (69–87) | 76 (68–83) | 76 (68–85) | 0.73 |
Hypertension | 66 (65.3%) | 44 (55.7%) | 110 (61.1%) | 0.219 |
Dyslipidemia | 63 (62.4%) | 42 (53.2%) | 105 (58.3%) | 0.227 |
Diabetes Mellitus | 25 (24.8%) | 15 (19%) | 40 (22.2%) | 0.373 |
Ever smoker | 17 (16.8%) | 14 (17.7%) | 31 (17.2%) | 0.99 |
Ever drinker | 11 (10.9%) | 6 (7.59%) | 17 (9.4%) | 0.331 |
Physical Activity: Frequency | ||||
 a. Inactive | 27 (26.7%) | 2 (2.5%) | 29 (16.1%) |  |
 b. Once a week | 1 (1%) | 7 (8.9%) | 8 (4.44%) |  |
 c. 2 to 3 times a week | 13 (12.9%) | 13 (16.5%) | 26 (14.4%) |  |
 d. Almost everyday | 60 (59.4%) | 57 (72.2%) | 117 (65%) |  |
Physical Activity: Intensity | ||||
 a. Take it easy | 97 (96%) | 29 (36.7%) | 126 (70%) |  |
 b. Heavy breath and sweat | 4 (4%) | 48 (60.8%) | 52 (28.9%) |  |
 c. Near exhaustion | 0 (0%) | 2 (2.5%) | 2 (1.11%) |  |
Physical Activity: Duration | ||||
 a. < 15 min | 38 (37.6%) | 7 (8.9%) | 45 (25%) |  |
 b. 16 to < 30 min | 22 (21.8%) | 12 (15.2%) | 34 (18.9%) |  |
 c. 30 to 60 min | 29 (28.7%) | 23 (29.1%) | 52 (28.9%) |  |
 d. > 1 hour | 12 (11.9%) | 37 (46.8%) | 49 (27.2%) |  |