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

  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

  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

  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

  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