title: Effects of resistance training on lower-extremity impairments in older people with hip fracture.
abstract: OBJECTIVE
  To study the effects of resistance training on muscle strength parameters, mobility, and balance.
  
  
  METHODS
  Randomized controlled trial.
  
  
  METHODS
  Research laboratory and senior gym.
  
  
  METHODS
  Population-based sample of eligible 60- to 85-year-old community-dwelling men and women 0.5 to 7.0 years after hip fracture. Forty-six people had no contraindications and were willing to participate in the exercise trial.
  
  
  METHODS
  Twelve-week intensive progressive strength-power training (n=24), aiming to reduce asymmetric deficit in leg muscle strength and power, or no intervention (n=22).
  
  
  METHODS
  Isometric knee extension torque (KET) and leg extension power (LEP) measured in the weaker and stronger leg and the asymmetric deficit ([weak/sum both legs]x100%), 10-m walking speed, dynamic balance test, and self-reported outdoor mobility.
  
  
  RESULTS
  KET increased in both legs (P<.021), LEP tended to increase in the weaker leg (P=.071), and asymmetric LEP deficit decreased (P=.010) after training compared with the control group. LEP of the stronger leg, asymmetric KET deficit, walking speed, and balance performance were not significantly affected by training. Self-reported ability to walk outdoors improved after training. The compliance to the training was over 90%, and few adverse events (n=4; mainly musculoskeletal) were likely to be caused by the training.
  
  
  CONCLUSIONS
  Intensive resistance training is feasible for people with a hip fracture and improved muscle strength and power. More intensive training especially for the weaker leg may be needed to obtain more marked effects on asymmetric deficit, mobility, and balance. Also, the timing and duration of training program should be considered. (ISRCTN identifier ISRCTN34271567.)
authors.affiliation: Finnish Centre for Interdisciplinary Gerontology, University of Jyväskylä, Jyväskylä, Finland. erja.portegijs@sport.jyu.fi
authors.forename: Erja
authors.initials: E
authors.lastname: Portegijs
authors.forename: Mauri
authors.initials: M
authors.lastname: Kallinen
authors.forename: Taina
authors.initials: T
authors.lastname: Rantanen
authors.forename: Ari
authors.initials: A
authors.lastname: Heinonen
authors.forename: Sanna
authors.initials: S
authors.lastname: Sihvonen
authors.forename: Markku
authors.initials: M
authors.lastname: Alen
authors.forename: Ilkka
authors.initials: I
authors.lastname: Kiviranta
authors.forename: Sarianna
authors.initials: S
authors.lastname: Sipilä