Sten P. Willemsen

nonrandomized-trial 2023

The Effect of an eHealth Coaching Program (Smarter Pregnancy) on Attitudes and Practices Toward Periconception Lifestyle Behaviors in Women Attempting Pregnancy: Prospective Study

Journal of medical Internet research ·doi:10.2196/39321

BACKGROUND: Lifestyle behaviors during the periconception period contribute to achievement of a successful pregnancy. Assessment of attitudes and practices toward these modifiable behaviors can aid in identifying gaps in unhealthy lifestyle…

observational 2021

Higher preconceptional maternal body mass index is associated with faster early preimplantation embryonic development: the Rotterdam periconception cohort

Reproductive biology and endocrinology : RB&E ·doi:10.1186/s12958-021-00822-0

BACKGROUND: Overweight and obesity affect millions of people globally, which has also serious implications for reproduction. For example, treatment outcomes after in vitro fertilisation (IVF) are worse in women with a high body mass index (…

rct 2021

Smartphone-based lifestyle coaching modifies behaviours in women with subfertility or recurrent miscarriage: a randomized controlled trial

Reproductive BioMedicine Online ·doi:10.1016/j.rbmo.2021.04.003

RESEARCH QUESTION: Is an online lifestyle coaching platform more effective at modifying periconceptional behaviours than standard advice offered by the UK National Health Service (NHS)? DESIGN: Women with subfertility or recurrent miscarri…

observational 2020

Preconceptional Maternal Vegetable Intake and Paternal Smoking Are Associated with Pre-implantation Embryo Quality

Reproductive sciences (Thousand Oaks, Calif.) ·doi:10.1007/s43032-020-00220-8

Inadequate nutrition and lifestyle behaviors, particularly during the periconception period, are associated with a negative impact on embryonic and subsequent fetal development. We investigated the associations between parental nutritional …