Table 2.
Regression slopes for lipid-related indices (dependent variables) vs. BMI and waist circumference (independent variables) adjusted for age, gender, smoking and drinking, stratified by physical activity
| Physical activity | Dependent variable | |||
|---|---|---|---|---|
| TC (mmol/L) | TG (mmol/L) | HDL-C (mmol/L) | LDL-C (mmol/L) | |
| Independent variable: BMI (kg/m2) | ||||
| Non-diabetic | ||||
| Active | 0.0159 ± 0.0035*** | 0.0798 ± 0.0045*** | − 0.0311 ± 0.0011*** | 0.0215 ± 0.0030*** |
| Inactive | 0.0191 ± 0.0032*** | 0.0869 ± 0.0047*** | − 0.0304 ± 0.0010*** | 0.0232 ± 0.0027*** |
| Interaction (P)a | P = 0.0025 | P < 0.0001 | P = 0.9067 | P = 0.0294 |
| Diabetic | ||||
| Active | – | 0.0742 ± 0.0177*** | − 0.0150 ± 0.0032*** | – |
| Inactive | – | 0.0762 ± 0.0216*** | − 0.0158 ± 0.0029*** | – |
| Interaction (P) | P = 0.0204 | P = 0.9636 | ||
| Independent variable: WC (cm) | ||||
| Non-diabetic | ||||
| Active | 0.0071 ± 0.0013*** | 0.0299 ± 0.0015*** | − 0.0114 ± 0.0004*** | 0.0090 ± 0.0012*** |
| Inactive | 0.0088 ± 0.0012*** | 0.0328 ± 0.0018*** | − 0.0107 ± 0.0004*** | 0.0086 ± 0.0009*** |
| Interaction (P) | P = 0.0055 | P = 0.0011 | P = 0.5942 | P = 0.0688 |
| Diabetic | ||||
| Active | – | 0.0224 ± 0.0062*** | − 0.0050 ± 0.0012*** | – |
| Inactive | – | 0.0263 ± 0.0080*** | − 0.0054 ± 0.0011*** | – |
| Interaction (P) | P = 0.0233 | P = 0.9876 | ||
Regression coefficient ± standard error
BMI, body mass index; WC, waist circumference; TC, total cholesterol; TG, triglyceride; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol
aThe test for whether physical activity affected the relationship of lipid-related indices to BMI
***P < 0.001