Table 3.
Between-group comparison of respondents based on age.
| Young | Midlife | Old | |
|---|---|---|---|
| (n = 125) | (n = 137) | (n = 126) | |
| Age (years) | 25.7 ± 5.0 | 50.2 ± 9.3 * | 75.1 ± 5.5 *† |
| Body mass index (kg/m2) | 25.0 ± 5.0 | 26.5 ± 6.0 | 25.9 ± 4.9 |
| Gender | |||
| Female | 72 (58%) | 94 (69%) | 87 (70%) |
| Male | 52 (41%) | 43 (31%) | 37 (30%) |
| Transgender | 2 (2%) | 0 | 0 |
| Physical Activity Participation | |||
| Yes | 109 (86%) | 102 (75%) * | 89 (72%) * |
| No | 18 (14%) | 35 (25%) * | 35 (28%) * |
| Physical Activities | |||
| Running | 63 (50%) | 52 (38%) | 16 (13%) *† |
| Cycling | 28 (22%) | 34 (25%) | 21 (17%) |
| Swimming | 3 (2%) | 6 (4%) | 5 (4%) |
| Weightlifting | 67 (53%) | 49 (36%) * | 16 (13%) *† |
| Team/Group | 20 (16%) | 7 (5%) * | 9 (7%) * |
| Other | 32 (25%) | 51 (37%) * | 61 (49%) * |
| Health Diagnoses | |||
| Heart Disease | 2 (2%) | 4 (3%) | 24 (20%) *† |
| High Cholesterol | 10 (8%) | 26 (19%) * | 72 (58%) *† |
| High Triglycerides | 5 (4%) | 10 (7%) | 29 (23%) *† |
| Diabetes | 1 (1%) | 9 (7%) * | 14 (11%) * |
| Osteoarthritis | 1 (1%) | 8 (6%) * | 35 (28%) *† |
| Fibromyalgia | 0 | 4 (3%) | 11 (9%) *† |
| Depression | 18 (14%) | 31 (23%) | 37 (30%) * |
| Cancer | 3 (2%) | 13 (10%) * | 28 (23%) *† |
| Creatine Use | |||
| Yes | 58 (46%) | 44 (32%) * | 7 (6%) *† |
| No | 69 (54%) | 93 (68%) * | 117 (94%) *† |
| Creatine Frequency | |||
| Daily | 25 (20%) | 20 (15%) | 5 (4%) |
| 2–6 times per week | 24 (19%) | 15 (11%) | 1 (1%) |
| Once a week | 2 (2%) | 1 (1%) | 0 |
| Less than once a week | 5 (4%) | 6 (4%) | 1 (1%) |
| Creatine Dose (gm) | 5.8 ± 3.2 | 7.1 ± 5.9 | 6.7 ± 4.1 |
| Sources of Information | |||
| Trainer/Coach | 18 (14%) | 14 (10%) | 0 *† |
| Friend/Family | 17 (13%) | 15 (11%) | 2 (2%) *† |
| Fitness Magazine | 4 (3%) | 11 (8%) | 3 (2%) |
| TV/Radio | 1 (1%) | 2 (2%) | 0 |
| Internet | 23 (18%) | 8 (6%)* | 0 *† |
| Dietitian/Nutritionist | 8 (6%) | 4 (3%) | 0 * |
| Nurse Practitioner | 0 | 1 (1%) | 0 |
| Physician | 0 | 2 (2%) | 0 |
| Pharmacist | 0 | 0 | 0 |
| Other | 17 (13%) | 13 (10%) | 3 (2%) |
Data reported as mean ± standard deviation or n (%). Young = 19–35 years; Midlife = 36–65 years; Old = 66–89 years. * Significantly different than Young (p < 0.05). † Significantly different than Midlife (p < 0.05).