Table 1.
Participant Characteristics
| n (female/male) | Young | Old | Oldest Old |
|---|---|---|---|
| 11 (6/5) | 11 (6/5) | 10 (4/6) | |
| Age (y) | 23 ± 2 | 68 ± 2† | 84 ± 2‡ |
| Height (cm) | 171 ± 7 | 168 ± 9 | 168 ± 10 |
| Weight (kg) | 67 ± 11 | 76 ± 14 | 71 ± 16 |
| BMI (kg/m2) | 23 ± 4 | 27 ± 4 | 25 ± 5 |
| Muscle Volume (dL) | 19 ± 5 | 22 ± 5 | 19 ± 6 |
| Peak work rate (W) | 12 ± 6 | 11 ± 5 | 6 ± 3‡ |
| Step (count/day) | 5,830 ± 1,986 | 6,249 ± 1,592 | 5,100 ± 3,768 |
| Physical activity (count/min) | 135 ± 45 | 144 ± 43 | 105 ± 53 |
| Glucose (mg/dL) | 72 ± 8 | 79 ± 13 | 75 ± 16 |
| Cholesterol (mg/dL) | 185 ± 48 | 195 ± 25 | 195 ± 36 |
| Triglycerides (mg/dL) | 121 ± 90 | 129 ± 78 | 126 ± 67 |
| HDL (mg/dL) | 53 ± 12 | 52 ± 13 | 56 ± 13 |
| LDL (mg/dL) | 116 ± 39 | 126 ± 23 | 118 ± 26 |
| WBC (K/μL) | 5.6 ± 0.9 | 5.5 ± 1.4 | 5.9 ± 0.9 |
| RBC (M/μL) | 5.1 ± 0.5 | 4.8 ± 0.2 | 4.7 ± 0.2 |
| Haemoglobin (g/dL) | 15.4 ± 1.6 | 14.7 ± 0.8 | 14.7 ± 1.0 |
| Hematocrit (%) | 45.0 ± 3.6 | 43.9 ± 2.2 | 43.5 ± 2.6 |
| Neutrophil (K/μL) | 3.0 ± 0.8 | 3.1 ± 1.0 | 3.8 ± 0.8‡ |
| Lymphocyte (K/μL) | 2.0 ± 0.5 | 1.7 ± 0.5 | 1.5 ± 0.4 |
| Monocyte (K/μL) | 0.4 ± 0.1 | 0.5 ± 0.2 | 0.5 ± 0.1 |
Notes: Values expressed as mean ± SD.
BMI = Body mass index; HDL = High-density lipoprotein; LDL = Low-density lipoprotein; RBC = Red blood cells; WBC = White blood cells.
† p < .05 significantly different from OLD.
‡ p < .05 significantly different from OLD and young.