Please select the eligibility criteria that correspond to the clinical trial below.
Title: Preventing Excessive Gestational Weight Gain in Obese Women
Brief Summary: The purpose of this study is to study the effects of a multicomponent lifestyle intervention that includes partial meal replacements as a means to prevent excessive gestational weight gain in obese women. The primary hypothesis is that the intervention will reduce the rate of gestational weight gain compared with standard care.


Options:
A: Inclusion Criteria:

* Pregnancy \< 20 weeks.
* Expressed interest in study and willingness to consent to participate in the study.

Exclusion Criteria:

* Obstetric or medical contraindications for exercise according to 2002 SOCG guideline (ruptured membranes, preterm labor, incompetent cervix, hypertensive disorders of pregnancy, growth restricted fetus, placenta previa, persistent bleeding in 2nd or 3rd trimester, significant metabolic, cardiovascular, respiratory or systemic disorder) (5, 6).
* Pre-existing diabetes (except a history of GDM, but not in current pregnancy).
* Multiple gestations.
B: Inclusion Criteria:

* Gestational age ≤ 12th week of gestation
* Age: 18 years to 43 years
* Prepregnancy BMI ≥ 18.5 kg/m2 and ≤ 40.0 kg/m2
* Sufficient German language skills
* Written informed consent

Exclusion Criteria:

* Multiple pregnancy
* Any condition preventing physical activity such as placenta praevia, persistent bleeding, cervical incompetence
* Prepregnancy diabetes or early diagnosed gestational diabetes
* Uncontrolled chronic diseases (e.g. thyroid dysfunction)
* Psychiatric or psychosomatic diseases
* Any condition that may interfere with the study protocol
C: Inclusion criteria:

* Over 18 years old
* \< 16 weeks gestation
* BMI \>= 25
* Willing to consent

Exclusion Criteria:

* Pregnant with Twins
* Untreated medical or psychological problem
* Inability to be physically active
D: Inclusion Criteria:

* Age 18-45 years
* Singleton viable pregnancy. A twin pregnancy reduced to singleton before 14 weeks by project gestational age. An ultrasound must be conducted before randomization that shows a fetal heartbeat; there should be no evidence of more than one fetus on the most recent pre-randomization ultrasound.
* Gestational age at randomization no earlier than 9 weeks 0 days and no later than 15 weeks 6 days based on an algorithm (see Section 3.4.3 below) that compares the last menstrual period (LMP) date and data from the earliest ultrasound
* Body mass index between 25-35 kg/m2 based on first trimester measured weight and on measured height. The earliest weight measurement before randomization, measured specifically for the study will be used.

Exclusion Criteria:

* In vitro fertilization (IVF) conception/ovulation induction w/ gonadotropins
* Weight gain of \>15 pounds from reported prepregnancy weight to Baseline visit
* Current smoker
* Prior bariatric surgery
* In weight loss program w/in 3 months of conception
* History of alcohol or drug abuse within 5 years
* No access to internet and/or smartphone
* Unable to attend intervention/follow-up visits
* Unwilling/unable to commit to self-monitoring data collection
* Unable to complete intervention program
* Presence of any condition that limits walking or following diet recommendations
* Not fluent in English

Answer: C