Table. Descriptive Characteristics by LTPA Trajectory, National Institutes of Health–AARP Diet and Health Study From 1995 to 2011.
| Characteristic | LTPA Trajectoriesa | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Maintainers | Increasers | Decreasers | ||||||||
| 1 [Reference] | 5 | 7 | 8 | 10 | 2 | 3 | 4 | 6 | 9 | |
| No. (%) | 13 170 (4.2) | 48 195 (15.3) | 72 783 (23.1) | 32 608 (10.4) | 9898 (3.1) | 25 094 (8.0) | 16 099 (5.1) | 16 611 (5.3) | 35 846 (11.4) | 44 755 (14.2) |
| Age, mean (SD), y | 63.0 (5.3) | 62.6 (5.4) | 63.2 (5.2) | 63.0 (5.3) | 63.1 (5.2) | 63.0 (5.4) | 62.9 (5.4) | 63.3 (5.3) | 62.8 (5.2) | 62.1 (5.4) |
| Male, No. (%) | 6588 (50.0) | 24 963 (51.8) | 42 868 (58.9) | 21 875 (67.1) | 7347 (74.2) | 13 675 (54.5) | 5677 (35.3) | 7155 (43.1) | 22 492 (62.8) | 30 811 (68.8) |
| Non-Hispanic white, No. (%) | 11 840 (89.9) | 44 164 (91.6) | 68 154 (93.6) | 30 742 (94.3) | 9342 (94.4) | 23 390 (93.2) | 15 045 (93.5) | 15 499 (93.3) | 33 161 (92.5) | 41 312 (92.3) |
| Educational level <high school, No. (%) | 1235 (10.2) | 2671 (5.5) | 3460 (4.7) | 952 (2.9) | 224 (2.3) | 1136 (4.5) | 902 (5.6) | 795 (4.8) | 1517 (4.3) | 1538 (3.5) |
| Smoke >20 cigarettes/d, No. (%) | 645 (4.9) | 1889 (3.9) | 2815 (3.9) | 887 (2.7) | 165 (1.7) | 453 (1.8) | 455 (2.8) | 786 (4.7) | 2137 (6.0) | 2207 (4.9) |
| LTPA of age group, mean (SD), h/wk | ||||||||||
| 15-18 y | 0.2 (0.6) | 1.3 (1.1) | 8.5 (1.2) | 7.3 (1.8) | 6.8 (1.7) | 1.1 (0.9) | 1.6 (1.0) | 3.3 (2.0) | 8.7 (1.0) | 7.0 (1.7) |
| 19-29 y | 0.0 (0.1) | 1.3 (1.2) | 8.8 (0.9) | 5.5 (1.6) | 1.7 (0.9) | 1.4 (1.2) | 6.2 (2.2) | 5.5 (1.7) | 8.1 (1.5) | 3.7 (2.1) |
| 35-39 y | 0.0 (0.0) | 1.2 (1.2) | 8.4 (1.3) | 4.9 (1.8) | 1.9 (1.5) | 2.8 (2.2) | 7.5 (1.8) | 5.8 (1.8) | 6.2 (2.2) | 1.6 (1.1) |
| 40-61 y | 0.0 (0.0) | 1.0 (0.9) | 7.7 (1.7) | 6.5 (1.6) | 6.9 (1.7) | 6.6 (1.6) | 7.5 (1.7) | 1.6 (0.8) | 1.4 (0.8) | 1.1 (0.9) |
| BMI, No. (%) | ||||||||||
| At 18 y ≥30.0 | 357 (2.7) | 942 (2.0) | 780 (1.1) | 358 (1.1) | 102 (1.0) | 464 (1.9) | 247 (1.5) | 275 (1.7) | 552 (1.5) | 736 (1.6) |
| Current ≥30.0 | 3611 (27.4) | 11 052 (22.9) | 12 252 (16.8) | 4627 (14.2) | 1285 (13.0) | 3015 (12.0) | 2406 (15.0) | 4124 (24.8) | 10 762 (30.0) | 11 783 (26.3) |
| Calories, mean (SD), kcal/d per 1000 | 1.8 (1.0) | 1.7 (0.9) | 2.0 (1.0) | 1.9 (0.8) | 1.8 (0.8) | 1.7 (0.8) | 1.7 (0.9) | 1.7 (0.8) | 1.9 (1.0) | 1.9 (0.9) |
| Dietary fat, mean (SD), % kcal from fat | 31.3 (8.0) | 30.4 (7.7) | 29.9 (7.7) | 29.2 (7.6) | 28.0 (7.5) | 28.0 (7.7) | 29.2 (7.7) | 30.8 (7.6) | 31.1 (7.6) | 30.8 (7.6) |
| Red meat, mean (SD), g/d | 65.3 (76.4) | 60.9 (59.1) | 68.7 (63.5) | 62.9 (57.9) | 56.3 (49.3) | 51.0 (49.1) | 54.2 (51.9) | 61.5 (55.2) | 75.5 (66.8) | 71.7 (61.3) |
| Alcohol, mean (SD), g/d | 11.7 (41.0) | 11.3 (33.7) | 14.0 (36.8) | 13.8 (32.5) | 14.7 (33.3) | 12.2 (31.4) | 11.0 (30.9) | 11.1 (32.8) | 14.6 (41.6) | 14.1 (38.8) |
| Vegetables, mean (SD), portions/d | 3.3 (2.5) | 3.5 (2.4) | 4.5 (2.9) | 4.1 (2.5) | 4.0 (2.4) | 3.9 (2.5) | 4.0 (2.6) | 3.7 (2.3) | 4.0 (2.7) | 3.8 (2.4) |
| Fruit, mean (SD), portions/d | 2.5 (2.4) | 2.7 (2.3) | 3.3 (2.7) | 3.2 (2.4) | 3.2 (2.4) | 3.2 (2.4) | 3.1 (2.6) | 2.7 (2.3) | 2.9 (2.4) | 2.7 (2.3) |
| No vitamin/mineral supplementation, No. (%) | 4404 (33.4) | 13 783 (28.6) | 19 781 (27.2) | 8448 (25.9) | 2465 (24.9) | 5785 (23.1) | 3847 (23.9) | 4416 (26.6) | 10 538 (29.4) | 13 366 (29.9) |
Abbreviations: AARP, formerly American Association of Retired Persons; BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); LTPA, leisure-time physical activity.
a
Ten LTPA trajectories were classified into 3 categories: participants with consistently higher or stable LTPA across time (maintainers; including the referent group), those indicating an increase in LTPA from adolescence or later in adulthood (increasers), or those with patterns of higher early adulthood LTPA but reduced activity later in adulthood (decreasers).