Table 3.
Accelerometry at baseline and follow-up among the control participants of the KAN-DO Study (n=132)
| Baseline (2–7 months postpartum)
|
Follow-up (12–17 months postpartum)
|
p value* | |||||
|---|---|---|---|---|---|---|---|
| Mean | Median | IQR | Mean | Median | IQR | ||
| Counts/minute | 138 | 133.3 | 102.8–166.2 | 171 | 154.4 | 120.2–195.3 | <.0001 |
| Absolute values (minutes per day): | |||||||
| Moderate (1535–3959 counts/min) | 7.2 | 6.2 | 2.3–10.2 | 10.3 | 8.2 | 4.0–14.2 | <.0001 |
| Vigorous (>=3960 counts/min) | 1.2 | 0.0 | 0.0–0.5 | 2.3 | 0.1 | 0.0–1.3 | 0.085 |
| Moderate to vigorous physical activity (>=1535 counts/min) | 8.4 | 6.9 | 2.3–11.3 | 12.5 | 8.8 | 4.1–17.9 | <.0001 |
| Light (51-1534 counts/min) | 272.3 | 265.9 | 222.5–318.0 | 275.3 | 275.4 | 223.9–319.4 | 0.0001 |
| Light (101-1534 counts/min) | 212.4 | 210.8 | 170.9–251.5 | 236.9 | 233.6 | 190.0–283.1 | <.0001 |
| Sedentary behavior (<=50 counts/min) | 503.4 | 494.4 | 455.4–550.5 | 488.3 | 480.0 | 422.9–535.1 | 0.41 |
| Sedentary behavior (<100 counts/min) | 563.6 | 557.6 | 512.1–615.4 | 508.1 | 508.5 | 455.7–556.0 | <.0001 |
| Relative values (% time per day): | |||||||
| Moderate (1535-3959 counts/min) | 0.9 | 0.8 | 0.3–1.3 | 1.3 | 1.1 | 0.5–1.8 | <.0001 |
| Vigorous (>=3960 counts/min) | 0.1 | 0.0 | 0.0–0.1 | 0.3 | 0.0 | 0.0–0.2 | 0.03 |
| Moderate to vigorous physical activity (>=1535 counts/min) | 1.0 | 0.9 | 0.3–1.5 | 1.6 | 1.1 | 0.5–2.3 | <.0001 |
| Light (51-1534 counts/min) | 34.2 | 34.3 | 29.4–38.9 | 35.9 | 36.2 | 30.8–41.1 | 0.0001 |
| Light (101-1534 counts/min) | 26.7 | 26.6 | 22.6–30.5 | 30.9 | 30.9 | 26.2–35.3 | <.0001 |
| Sedentary behavior (<=50 counts/min) | 63.7 | 63.6 | 58.7–69.2 | 63.5 | 62.5 | 56.5–71.0 | 0.62 |
| Sedentary behavior (<100 counts/min) | 71.2 | 71.4 | 67.2–75.7 | 66.2 | 66.7 | 61.4–70.8 | <.0001 |
*
p-value is based on the cohort from GEE models adjusted for age (at baseline), education (at baseline, high school or less/some college, college graduate or more), race/ethnicity (non-Hispanic White, Other), site (Durham, Greensboro), marital status (time varying: married, not married), general health (time varying: excellent/very good, good, fair/poor), work status (time varying: employed full time, employed part-time, not employed), body mass index (time varying: continuous), and average total daily Actical wearing hours (time varying)
GEE=general estimating equation; IQR = interquartile range