Table 2. Tri-axial accelerometer-determined PA and SED by sex, age, and BMI.
|
All (n=1,739) |
Men (n=660) |
Women (n=1,079) |
P-value |
| Step (steps/day) † |
4,473 (2,861-6,523) |
4,615 (2,987-6,900) |
4,402 (2,797-6,356) |
0.3529 |
|
Age groups |
|
<.0001 a |
| 65-69 |
5,670 (3,976-7,806) |
5,767 (4,179-8,021) |
5,583 (3,815-7,527) |
|
| 70-74 |
4,795 (3,301-6,600) |
4,550 (3,229-6,538) |
4,925 (3,374-6,713) |
|
| 75-79 |
3,986 (2,468-5,609) |
4,174 (2,655-6,101) |
3,778 (2,407-5,565) |
|
| ≥80 |
2,561 (1,396-4,089) |
2,986 (1,694-4,716) |
2,436 (1,351-3,729) |
|
|
BMI groups |
|
0.0011 b |
| BMI <25 |
4542 (2,922-6,672) |
4,757 (3,014-7,084) |
4,409 (2,818-6,426) |
|
| BMI ≥25 |
4292 (2,730-6,042) |
4,229 (2,779-6,191) |
4,295 (2,720-6,042) |
|
| SED (minutes/day) |
451.6 (122.4) |
485.4 (129.6) |
431.0 (113.0) |
<.0001 c |
|
Age groups |
|
<.0001 a |
| 65-69 |
430.8 (122.0) |
458.5 (132.6) |
413.6 (111.6) |
|
| 70-74 |
451.6 (124.1) |
492.6 (137.0) |
424.8 (106.9) |
|
| 75-79 |
456.1 (114.5) |
493.8 (111.6) |
433.5 (110.4) |
|
| ≥80 |
485.3 (122.4) |
516.7 (122.4) |
468.2 (119.2) |
|
|
BMI groups |
|
0.0009 b |
| BMI <25 |
446.6 (122.5) |
482.2 (128.9) |
424.3 (112.8) |
|
| BMI ≥25 |
466.8 (120.9) |
495.7 (131.5) |
450.4 (111.5) |
|
| LPA (minutes/day) |
332.5 (98.1) |
278.8 (89.3) |
365.3 (88.3) |
<.0001 c |
|
Age groups |
|
<.0001 a |
| 65-69 |
350.8 (96.3) |
297.2 (88.9) |
384.2 (85.1) |
|
| 70-74 |
334.8 (99.4) |
272.6 (90.6) |
375.4 (82.6) |
|
| 75-79 |
326.5 (90.5) |
278.2 (77.3) |
355.4 (85.6) |
|
| ≥80 |
301.5 (100.1) |
253.2 (95.4) |
327.8 (92.6) |
|
|
BMI groups |
|
<.0001 b |
| BMI <25 |
338.2 (98.0) |
284.0 (87.9) |
372.1 (88.3) |
|
| BMI ≥25 |
315.1 (96.5) |
262.0 (92.1) |
345.3 (85.5) |
|
| MVPA (minutes/day) |
37.8 (19.0-60.7) |
33.7 (16.8-57.9) |
40.0(20.2-63.3) |
<.0001 c |
|
Age groups |
|
<.0001 a |
| 65-69 |
54.2 (33.6-78.1) |
53.3 (31.0-69.8) |
54.9 (35.6-83.8) |
|
| 70-74 |
39.7 (23.3-58.8) |
34.7 (21.3-53.2) |
40.8 (26.8-66.0) |
|
| 75-79 |
31.0 (14.6-50.6) |
25.9 (13.0-44.0) |
33.3 (15.9-55.1) |
|
| ≥80 |
16.8 (7.6-34.5) |
14.2 (7.1-32.1) |
18.5 (7.7-34.8) |
|
|
BMI groups |
|
0.0408 b |
| BMI <25 |
38.9 (19.4-62.8) |
34.6 (17.1-59.3) |
41.3 (20.5-66.1) |
|
| BMI ≥25 |
35.8 (17.5-56.4) |
32.1 (15.7-49.9) |
37.1 (19.4-59.3) |
|
Note: Data are represented as median (interquartile range) or Mean (SD).
a Significant difference among age groups.
b Significant difference between BMI groups.
c Significant difference between sexes.† Significant age×BMI interaction effect. PA, physical activity; SED, sedentary behavior; BMI, body mass index; LPA, light physical activity; MVPA, moderate-to-vigorous physical activity.
