title: Benefits of aerobic or resistance training during pregnancy on maternal health and perinatal outcomes: A systematic review.
abstract: OBJECTIVE
  To understand what evidence exists with regard to maternal and offspring benefits of aerobic and/or resistance training during pregnancy.
  
  
  METHODS
  Systematic review of RCTs (published until May 2015) with healthy pregnant women and focusing on the benefits of exercise interventions on maternal health or perinatal outcomes. Studies were ranked as high/low quality, and a level of evidence was established according to the number of high-quality studies and consistency of the results.
  
  
  RESULTS
  61 RCTs were analyzed. The evidence for a benefit of combined exercise [aerobic+resistance (muscle strength)] interventions on maternal cardiorespiratory fitness and prevention of urinary incontinence was strong. A weak or insufficient level of evidence was found for the rest of interventions and outcomes
  
  
  CONCLUSIONS
  The exercise modality that seems to induce a more favorable effect on maternal health is the combination of aerobic and resistance exercises during pregnancy.
authors: Research Institute of Hospital 12 de Octubre ('i+12'), Avda. de Córdoba s/n, 28041 Madrid, Spain. Electronic address: m.perales.santaella@gmail.com.
authors: Maria
authors: M
authors: Perales
authors: Research Institute of Hospital 12 de Octubre ('i+12'), Avda. de Córdoba s/n, 28041 Madrid, Spain; GIDFYS, Department of Health Sciences, European University Miguel de Cervantes, Valladolid, Spain. Electronic address: asantos@uemc.es.
authors: Alejandro
authors: A
authors: Santos-Lozano
authors: PROFITH "Promoting Fitness and Health through physical activity" research group, Faculty of Sport Sciences, Department of Physical Education and Sports, University of Granada, Granada, Spain. Electronic address: ruizj@ugr.es.
authors: Jonatan R
authors: JR
authors: Ruiz
authors: Research Institute of Hospital 12 de Octubre ('i+12'), Avda. de Córdoba s/n, 28041 Madrid, Spain; European University, Madrid, Spain. Electronic address: alejandro.lucia@universidadeuropea.es.
authors: Alejandro
authors: A
authors: Lucia
authors: AFIPE Research Group, Technical University of Madrid, Spain. Electronic address: barakatruben@gmail.com.
authors: Ruben
authors: R
authors: Barakat
mesh_terms: D005260:Female; D006801:Humans; D000068097:Maternal Health; D011247:Pregnancy; D011248:Pregnancy Complications / Q000517:prevention & control*; D011256:Pregnancy Outcome; D055070:Resistance Training
keywords: Exercise; Maternal health; Perinatal outcomes; Pregnancy