Table 2.
Indicators of volume, rate, and breaks in sedentary time: 2005-2006 NHANES U.S. Adults
| Obesity Category | |||||
|---|---|---|---|---|---|
| Normal Weight N = 1016, Males = 461, Females = 555 | Overweight N = 1195, Males = 725, Females = 470 | Obese N = 1242, Males = 562, Females = 680 | |||
| Accelerometer variable | |||||
| Volume indicators** | Mean (95% CL) | Mean (95% CL) | Mean (95% CL) | ||
| Activity counts/day | All | 245743 | 243106 | 201958 | |
| (236709, 254776) | (230874, 255340) | (192613, 211303)‡ | |||
| Male | 282211 | 265224 | 224755 | ||
| (270112, 294311) | (251468, 278979) | (212759, 236751)‡ | |||
| Female | 222335 | 211356 | 183030 | ||
| (210842, 233827) | (198266, 224446) | (168426, 197635)† | |||
| Uncensored steps/day | All | 10379 | 10015 | 8893 | |
| (10032, 10727) | (9661, 10369) | (8606, 9180)‡ | |||
| Male | 11402 | 10741 | 9889 | ||
| (10928, 11876) | (10330, 11153) | (9580, 10198)‡ | |||
| Female | 9723 | 8972 | 8066 | ||
| (9319, 10127) | (8543, 9402) | (7684, 8448)‡ | |||
| Censored steps/day | All | 7190 | 6879 | 5784 | |
| (6856, 7524) | (6581, 7177) | (5520, 6047)‡ | |||
| Male | 8285 | 7643 | 6644 | ||
| (7829, 8742) | (7301, 7984) | (6383, 6905)‡ | |||
| Female | 6486 | 5782 | 5069 | ||
| (6091, 6882) | (5417, 6148) | (4703, 5435)‡ | |||
| Rate indicators* | |||||
| Activity counts/minute | All | 343.9 | 332.3 | 287.5 | |
| (332.4, 355.4) | (323.3, 341.2) | (277.8, 297.2)‡ | |||
| Male | 395.3 | 363.5 | 314.9 | ||
| (375.9, 414.8) | (351.2, 375.8) | (302.4, 327.4)‡ | |||
| Female | 310.9 | 287.4 | 264.8 | ||
| (297.1, 324.6) | (274.9, 299.9) | (251.2, 278.3)‡ | |||
| Uncensored steps/minute | All | 12.3 | 11.8 | 10.6 | |
| (11.9, 12.6) | (11.4, 12.1) | (10.3, 10.9)‡ | |||
| Male | 13.3 | 12.5 | 11.7 | ||
| (12.8, 13.8) | (12.1, 12.9) | (11.3, 12.0)‡ | |||
| Female | 11.6 | 10.7 | 9.8 | ||
| (11.1, 12.1) | (10.3, 11.2) | (9.4, 10.2)‡ | |||
| Censored steps/minute | All | 8.5 | 8.1 | 6.9 | |
| (8.1, 8.9) | (7.8, 8.3) | (6.6, 7.2)‡ | |||
| Male | 9.7 | 8.9 | 7.8 | ||
| (9.2, 10.2) | (8.5, 9.2) | (7.5, 8.2)‡ | |||
| Female | 7.7 | 6.9 | 6.1 | ||
| (7.2, 8.2) | (6.5, 7.3) | (5.7, 6.6)‡ | |||
| Break in sedentary time indicator* | |||||
| Transitions/day | All | 92.7 | 91.5 | 90.4 | |
| (90.9, 94.6) | (90.2, 92.8) | (89.3, 91.5)† | |||
| Male | 90.9 | 90.2 | 88.4 | ||
| (88.5, 93.4) | (88.2, 92.1) | (87.1, 89.8)† | |||
| Female | 93.9 | 93.5 | 92.1 | ||
| (92.0, 95.8) | (91.4, 95.5) | (90.4, 93.8) | |||
*averaged over number of days worn
**10 or more consecutive minutes above the moderate intensity activity count threshold, with allowance for interruptions of 1 or 2 minutes below threshold. A bout was terminated by 3 minutes below threshold.
‡p < 0.0001, †p < 0.03 for linear trend