Table 1. Selected demographic characteristics, responses to physical activity questionnaire (IPAQ, short form, usual 7 days), and accelerometer-measured physical activity, by age and sex.
| Aged 65 to 74 years (the young old) | Aged 75 to 89 years (the old old) | |||||
| Men (n = 81) | Women (n = 88) | P value | Men (n = 83) | Women (n = 73) | P value | |
| Median [25%ile, 75%ile] |
Median [25%ile, 75%ile] |
Median [25%ile, 75%ile] |
Median [25%ile, 75%ile] |
|||
| Demographic characteristics | ||||||
| Age (years)a | 69.0 [67.0, 72.0] |
70.0 [67.0, 72.0] |
0.921 | 78.0 [76.0, 80.0] |
77.0 [75.0, 79.0] |
0.027 |
| Body mass index > 25b | 16.0% | 18.2% | 0.839 | 4.8% | 15.1% | 0.054 |
| Chronic health conditionb | 51.9% | 48.9% | 0.759 | 67.5% | 53.4% | 0.100 |
| Self-reported physical activity (IPAQ) | ||||||
| Vigorous (min·wk−1)a | 0.0 [0.0, 156.2] |
0.0 [0.0, 21.7] |
0.008 | 0.0 [0.0, 90.0] |
0.0 [0.0, 0.0] |
0.214 |
| Moderate (min·wk−1)a | 65.0 [0.0, 250.0] |
0.0 [0.0, 116.0] |
0.001 | 0.0 [0.0, 208.0] |
0.0 [0.0, 104.0] |
0.541 |
| Walking (min·wk−1)a | 360.0 [150.0, 630.0] |
360.0 [120.0, 622.5] |
0.950 | 360.0 [150.0, 720.0] |
210.0 [112.5, 360.0] |
<0.001 |
| Total IPAQ | ||||||
| Original IPAQ (MET·min·wk−1)a | 2160.9 [1180.6, 4108.7] |
1452.2 [724.5, 2686.8] |
0.006 | 2194.5 [1155.0, 3714.2] |
1187.9 [643.7, 1712.6] |
<0.001 |
| Modified IPAQ (MET·min·wk−1)a | 1575.0 [894.6, 2965.9] |
1095.2 [544.4, 1956.3] |
0.009 | 1659.7 [875.0, 2625.0] |
900.2 [487.6, 1235.2] |
<0.001 |
| Sitting (hours·day−1)a | 3.0 [2.0, 5.0] |
3.0 [2.0, 5.0] |
0.570 | 4.0 [2.5, 6.0] |
4.0 [2.3, 5.8] |
0.745 |
| Accelerometer-measured physical activity | ||||||
| TPA-AC (MET·min·wk−1)a | 1493.9 [1028.2, 2178.4] |
1311.7 [1026.5, 1652.6] |
0.035 | 1200.8 [863.5, 1824.1] |
889.7 [639.1, 1095.0] |
<0.001 |
| Daily step count (steps·day−1)a | 9153.0 [6537.1, 12 481.3] |
7991.2 [6336.1, 10 096.7] |
0.032 | 7256.6 [5378.8, 10 340.8] |
5842.8 [4225.6, 6854.4] |
<0.001 |
| METs 3.0+ (min·day−1)a | 22.2 [11.3, 43.7] |
20.0 [11.4, 27.2] |
0.094 | 20.6 [6.6, 31.9] |
9.9 [6.0, 16.5] |
0.001 |
aMann-Whitney test. bFisher’s exact test.
Chronic health condition: ≥1 of hypertension, diabetes, cerebrovascular disease, myocardial infarction, and cancer.
Original IPAQ: vigorous 8.0METs, moderate 4.0METs, and walking 3.3METs; Modified IPAQ: vigorous 5.3METs, moderate 3.0METs, and walking 2.5METs.
TPA-AC: Total physical activity measured by accelerometer. METs 3.0+: Duration of physical activity ≥3.0METs.