title: Effect of gestational weight gain as well as rehabilitation training on postnatal pelvic muscle strength.
abstract: OBJECTIVE
  The current study explored the impact of gestational weight gain on postnatal pelvic muscle strength and the effect of low-frequency electrical stimulation combined with biofeedback training on strength recovery.
  
  
  METHODS
  A total of 126 mothers six to eight weeks after term delivery were recruited at Peking University Shenzhen Hospital from August 2010 to July 2011. According to gestational weight gain, they were divided into two groups: the < 15 kg (A) and > or = 15 kg (B) groups. Pelvic floor muscle fibre strength was determined. Target low-frequency electrical stimulation combined with biofeedback training was conducted. After training, pelvic floor muscle fiber strength was determined again for effect evaluation.
  
  
  RESULTS
  Before training, types I and II pelvic floor muscle fiber strength of group B was noticeably lower than that of group A (p < 0.05). After rehabilitation, the pelvic floor muscle strength of both groups significantly increased (p < 0.05). However, types I and II pelvic floor muscle fiber strength of group B was still significantly lower than that of group A (p < 0.05).
  
  
  CONCLUSIONS
  Gestational weight gain negatively influences pelvic floor muscles. Low-frequency electrical stimulation combined with biofeedback training improves postnatal pelvic floor muscle fiber strength. A less gestational weight increase indicates faster postnatal pelvic muscle strength recovery and a better rehabilitative effect.
authors.forename: H
authors.initials: H
authors.lastname: Li
authors.forename: R F
authors.initials: RF
authors.lastname: Wu
authors.forename: Y
authors.initials: Y
authors.lastname: Hu
authors.forename: F
authors.initials: F
authors.lastname: Qi
authors.forename: A M
authors.initials: AM
authors.lastname: Xiao
authors.forename: Z
authors.initials: Z
authors.lastname: Ma
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: W Y
authors.initials: WY
authors.lastname: Zhang
authors.forename: X
authors.initials: X
authors.lastname: Liu
authors.forename: Z C
authors.initials: ZC
authors.lastname: Wang
mesh_terms: D000328:Adult; D001676:Biofeedback, Psychology; D004599:Electric Stimulation Therapy; D004576:Electromyography; D005260:Female; D006801:Humans; D009119:Muscle Contraction / Q000502:physiology; D053580:Muscle Strength / Q000502:physiology*; D017773:Pelvic Floor / Q000502:physiology; D011247:Pregnancy / Q000502:physiology*; D015430:Weight Gain / Q000502:physiology*; D055815:Young Adult