Table 3.
Relationships between physical activity subcomponents and measures of insulin sensitivity and β-cell response
| Moderate-to-Vigorous Time (% of weartime) | Total activity (counts/day) | Sedentary Time (% of weartime) | PAEE (kcal/day) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pregnant | Non-pregnant | Pregnant | Non-pregnant | Pregnant | Non-pregnant | Pregnant | Non-pregnant | |||||||||
| Partial r2 | r (95% CI) | Partial r2 | r (95% CI) | Partial r2 | r (95% CI) | Partial r2 | r (95% CI) | Partial r2 | r (95% CI) | Partial r2 | r (95% CI) | Partial r2 | r (95% CI) | Partial r2 | r (95% CI) | |
| ISIOGTT | 0.004 | 0.10 | 0.034 | 0.25 | 0.048 | 0.28 | 0.221 | 0.46 | 0.0003 | -0.06 | 0.004 | 0.04 | 0.02 | 0.12 | 0.0002 | -0.01 |
| (-0.16 to 0.34) | (-0.11 to 0.56) | (-0.07 to 0.57) | (0.24 to 0.64) | (-0.40 to 0.29) | (-0.21 to 0.29) | (-0.23 to 0.44) | (-0.24 to 0.24) | |||||||||
| First phase insulin response | 0.0003 | -0.07 | 0.044 | -0.16 | 0.108 | -0.47 | 0.106 | -0.36 | 0.009 | 0.17 | 0.004 | -0.13 | 0.037 | -0.22 | 0.011 | -0.16 |
| (-0.41 to 0.29) | (-0.40 to 0.10) | (-0.70 to -0.15) | (-0.56 to -0.12) | (-0.18 to 0.49) | (-0.38 to 0.11) | (-0.52 to 0.12) | (-0.39 to 0.07) | |||||||||
| DIo | 0.005 | 0.03 | 0.001 | 0.02 | 0.021 | 0.24 | 0.007 | 0.10 | 0.002 | 0.25 | 0.0005 | 0.02 | 0.004 | -0.10 | 0.0005 | 0.04 |
| (-0.33 to 0.38) | (-0.23 to 0.28) | (-0.12 to 0.54) | (-0.16 to 0.34) | (-0.10 to 0.55) | (-0.23 to 0.27) | (-0.42 to 0.25) | (-0.20 to 0.28) | |||||||||
R-values are Spearman correlation coefficients. All correlations partialled for age, PAEE additionally partialled for weight. Partial r2 are from multiple linear regressions including age, and for PAEE, age and weight as covariates. PAEE, physical activity energy expenditure; ISIOGTT, Matsuda composite insulin sensitivity index; DIO, oral disposition index. Bold text indicates a statistically significant (p < 0.05) correlation.