Table 1.
Descriptive statistics for subjects with four or more days with 10 or more hours of wear time
| Variable | Men |
Women |
P-value | ||
|---|---|---|---|---|---|
| n | Mean (SD) | n | Mean (SD) | ||
| Age (years) | 221 | 79.7 (4.2) | 358 | 80.2 (5.1) | 0.23 |
| Weight (kg) | 220 | 83.2 (14.2) | 357 | 70.1 (13.6) | <0.001* |
| BMI (kg × m−2) | 220 | 26.7 (3.9) | 357 | 26.8 (4.8) | 0.69 |
| Valid wear time (min × day−1) | 221 | 832 (92) | 358 | 815 (83) | 0.024* |
| Age groups | |||||
| ≤74.9 | 53 | 859 (96) | 73 | 837 (78) | <0.001** |
| 75–79.5 | 76 | 831 (91) | 130 | 833 (90) | |
| 80–84.9 | 64 | 818 (77) | 90 | 802 (77) | |
| ≥85 | 28 | 816 (109) | 65 | 773 (65) | |
| BMI groups | |||||
| Normal weighte | 77 | 835 (102) | 132 | 816 (75) | 0.17 |
| Overweighte | 97 | 823 (82) | 141 | 814 (88) | |
| Obesee | 46 | 843 (95) | 84 | 816 (89) | |
| Total PA (1,000 counts × day−1) | 221 | 117 (68) | 358 | 105 (58) | 0.048* |
| Age groups | |||||
| ≤74.9 | 53 | 146 (67) | 73 | 130 (71) | <0.001** |
| 75–79.5 | 76 | 125 (67) | 130 | 116 (55) | |
| 80–84.9 | 64 | 95 (61) | 90 | 94 (45) | |
| ≥85 | 28 | 89 (60) | 65 | 72 (41) | |
| BMI groups | |||||
| Normal weight | 77 | 128 (78) | 132 | 113 (61) | <0.001*** |
| Overweight | 97 | 114 (64) | 141 | 103 (56) | |
| Obese | 46 | 106 (56) | 84 | 97 (53) | |
| Wear time PA (count × min−1) | 221 | 139 (78) | 358 | 128 (65) | 0.092 |
| Age groups | |||||
| ≤74.9 | 53 | 171 (77) | 73 | 154 (80) | <0.001** |
| 75–79.5 | 76 | 150 (78) | 130 | 139 (62) | |
| 80–84.9 | 64 | 115 (69) | 90 | 116 (51) | |
| ≥85 | 28 | 106 (67) | 65 | 92 (52) | |
| BMI groups | |||||
| Normal weight | 77 | 152 (89) | 132 | 137 (69) | <0.001*** |
| Overweight | 97 | 137 (74) | 141 | 125 (63) | |
| Obese | 46 | 125 (63) | 84 | 119 (62) | |
| Sedentary time (hours × day−1)a | 221 | 10.5 (1.5) | 358 | 10.0 (1.3) | <0.001* |
| Age groups | |||||
| ≤74.9 | 53 | 10.5 (1.8) | 73 | 9.9 (1.4) | 0.15 |
| 75–79.5 | 76 | 10.3 (1.5) | 130 | 10.0 (1.5) | |
| 80–84.9 | 64 | 10.7 (1.3) | 90 | 10.0 (1.3) | |
| ≥85 | 28 | 10.7 (1.7) | 65 | 10.2 (1.1) | |
| BMI groups | |||||
| Normal weight | 77 | 10.5 (1.6) | 132 | 9.9 (1.2) | 0.13 |
| Overweight | 97 | 10.3 (1.4) | 141 | 10.0 (1.4) | |
| Obese | 46 | 10.7 (1.5) | 84 | 10.3 (1.5) | |
| Sedentary time (percent × weartime−1)a | 221 | 75.9% (8.3%) | 358 | 73.9% (8.6%) | 0.001* |
| Age groups | |||||
| ≤74.9 | 53 | 73.5% (8.8%) | 73 | 71.5% (9.2%) | <0.001** |
| 75–79.5 | 76 | 74.3% (7.8%) | 130 | 72.1% (7.7%) | |
| 80–84.9 | 64 | 78.2% (7.4%) | 90 | 75.0% (8.2%) | |
| ≥85 | 28 | 79.0% (8.2%) | 65 | 78.9% (7.9%) | |
| BMI groups | |||||
| Normal weight | 77 | 75.8% (8.2%) | 132 | 72.9% (8.7%) | 0.002*** |
| Overweight | 97 | 75.5% (8.6%) | 141 | 73.8% (8.8%) | |
| Obese | 46 | 76.7% (7.7%) | 84 | 75.5% (8.0%) | |
| Low-light PA (min*day−1)b | 221 | 163 (55) | 358 | 182 (60) | <0.001* |
| Age groups | |||||
| ≤74.9 | 53 | 178 (63) | 73 | 197 (64) | <0.001** |
| 75–79.5 | 76 | 169 (50) | 130 | 198 (53) | |
| 80–84.9 | 64 | 150 (51) | 90 | 175 (59) | |
| ≥85 | 28 | 148 (56) | 65 | 145 (55) | |
| BMI groups | |||||
| Normal weight | 77 | 161 (56) | 132 | 189 (62) | 0.012*** |
| Overweight | 97 | 165 (56) | 141 | 184 (61) | |
| Obese | 46 | 163 (54) | 84 | 171 (54) | |
| High-light PA (min × day−1)c | 221 | 29 (22) | 358 | 27 (23) | 0.23 |
| Age groups | |||||
| ≤74.9 | 53 | 35 (22) | 73 | 36 (28) | <0.001** |
| 75–79.5 | 76 | 34 (25) | 130 | 30 (23) | |
| 80–84.9 | 64 | 21 (18) | 90 | 24 (16) | |
| ≥85 | 28 | 19 (16) | 65 | 17 (18) | |
| BMI groups | |||||
| Normal weight | 77 | 28 (19) | 132 | 28 (23) | 0.028*** |
| Overweight | 97 | 30 (25) | 141 | 27 (24) | |
| Obese | 46 | 29 (22) | 84 | 25 (22) | |
| MVPA (min*day−1)d,f | 221 | 9.9 (13) | 358 | 5.0 (7.2) | <0.001* |
| Age groups | |||||
| ≤74.9 | 53 | 14.5 (15.0) | 73 | 7.6 (9.6) | <0.001** |
| 75–79.5 | 76 | 10.0 (11.7) | 130 | 5.6 (7.5) | |
| 80–84.9 | 64 | 7.4 (12.6) | 90 | 3.7 (5.1) | |
| ≥85 | 28 | 6.8 (10.3) | 65 | 2.3 (4.0) | |
| BMI groups | |||||
| Normal weight | 77 | 13.9 (17.2) | 132 | 6.3 (8.1) | <0.001*** |
| Overweight | 97 | 8.4 (9.5) | 141 | 4.1 (5.6) | |
| Obese | 46 | 6.6 (8.6) | 84 | 4.3 (7.7) | |
Genders compared by t-test; for PA and sedentary variables t-tests were conducted on square root transformed data. PA measured by sex, age group and BMI. For cut-points see Troiano et al. [2] and Matthews et al. [17].
a0–99 counts/min.
b100–759 counts/min.
c760–2,019 counts/min.
d≥2,020 counts/min.
eNormal weight BMI < 25kg × m−2, overweight BMI = 25–29.9 kg × m−2, obese BMI ≥ 30 kg × m−2.
fOf the 579 participants, 25 (4.3%) had zero minutes of MVPA, 10 (4.5%) men and 15 (4.2%) women.
*Significant difference between genders (P < 0.05).
**Significant correlation with age, adjusted for BMI and gender (multiple linear regression).
***Significant correlation with BMI, adjusted for age and gender (multiple linear regression).