title: Effects of maternal lifestyle intervention during pregnancy on untreated partner weight: Results from fit for delivery study.
abstract: OBJECTIVE
  To test the hypothesis that untreated partners of pregnant women receiving a prenatal lifestyle intervention (vs. standard care) would lose more weight during pregnancy and postpartum.
  
  
  METHODS
  Fit for Delivery was a study of 401 pregnant women with overweight/obesity (OW/OB) and normal weight (NW) randomized to prenatal lifestyle intervention or standard care. Mother's self-report of partners' weight was obtained at study entry (<16 weeks gestation), 30 weeks gestation, and 6 and 12 months postpartum.
  
  
  RESULTS
  At study entry, 157 of 200 (78%) of intervention mothers and 144 of 201 (72%) of standard care mothers reported having a partner. In intent-to-treat analyses, there was no significant treatment × time effects on partner weight (P = 0.67). In secondary analyses, partners of OW/OB intervention women lost weight from study entry to 6 and 12 months postpartum (-0.5 ± 9.5 kg, -1.0 ± 9.3 kg; P < 0.05), while partners of standard care women gained weight during the same time frame (+2.5 ± 6.7 kg, +2.9 ± 7.4 kg; P < 0.05); adjusting for partner study entry BMI removed these effects.
  
  
  CONCLUSIONS
  Lifestyle intervention delivered to pregnant women did not significantly reduce weight of untreated partners. Future research is needed to test prenatal interventions that engage partners and use objective measures of weight.
authors.affiliation: Kinesiology Department, California Polytechnic State University, San Luis Obispo, California, USA.
authors.forename: Todd A
authors.initials: TA
authors.lastname: Hagobian
authors.affiliation: Kinesiology Department, California Polytechnic State University, San Luis Obispo, California, USA.|Miriam Hospital, Weight Control and Diabetes Research Center, Providence, Rhode Island, USA.
authors.forename: Suzanne
authors.initials: S
authors.lastname: Phelan
authors.affiliation: Department of Psychology, University of Connecticut, Storrs, Connecticut, USA.
authors.forename: Amy A
authors.initials: AA
authors.lastname: Gorin
authors.affiliation: Department of Obstetrics and Gynecology, Warren Alpert Medical School, Brown University Women & Infants Hospital of Rhode Island, Providence, Rhode Island, USA.
authors.forename: Maureen G
authors.initials: MG
authors.lastname: Phipps
authors.affiliation: School of Public Health, University of California, Berkeley, California, USA.
authors.forename: Barbara
authors.initials: B
authors.lastname: Abrams
authors.affiliation: Miriam Hospital, Weight Control and Diabetes Research Center, Providence, Rhode Island, USA.
authors.forename: Rena R
authors.initials: RR
authors.lastname: Wing
mesh_terms: D000328:Adult; D001835:Body Weight / Q000502:physiology*; D036861:Delivery, Obstetric; D005260:Female; D005865:Gestational Age; D006801:Humans; D057194:Intention to Treat Analysis; D007398:Interpersonal Relations; D008019:Life Style; D009035:Mothers; D009765:Obesity / Q000150:complications / Q000628:therapy*; D050177:Overweight / Q000150:complications / Q000628:therapy; D011247:Pregnancy; D011248:Pregnancy Complications / Q000628:therapy*; D011295:Prenatal Care / Q000379:methods; D040242:Risk Reduction Behavior; D018454:Spouses / Q000523:psychology / Q000706:statistics & numerical data; D015430:Weight Gain / Q000502:physiology; D061217:Weight Reduction Programs / Q000379:methods; D055815:Young Adult