| BMI | Body mass index |
| CG | Control group |
| CI | Confidence interval |
| DEGS | German Health Interview and Examination Survey for Adults |
| DEGS-HEI | DEGS-Healthy Eating Index |
| FFQ | Food frequency questionnaire |
| GEE | Generalised estimating equations |
| GeliS | “Gesund leben in der Schwangerschaft”/“Healthy living in pregnancy” |
| GWG | Gestational weight gain |
| HEI | Healthy Eating Index |
| IG | Intervention group |
| IOM | Institute of Medicine |
| MET | Metabolic equivalent of task |
| OR | Odds ratio |
| PA | Physical activity |
| RCT | Randomised controlled trial |
| SD | Standard deviation |
| T1pp | 6–8 weeks postpartum (time point of first data collection postpartum) |
| T2pp | One year postpartum (time point of second data collection postpartum) |
| PPAQ | Pregnancy Physical Activity Questionnaire |