title: Effects of resistance training in older women with knee osteoarthritis and total knee arthroplasty.
abstract: OBJECTIVE
  This study sought to analyze the effects of resistance training on functional performance, lower-limb loading distribution and balance in older women with total knee arthroplasty (TKA) and osteoarthritis (OA) in the contralateral knee. In addition, this older knee OA and TKA group (OKG) was compared to older (OG) and young women (YG) without musculoskeletal diseases who underwent the same resistance training program.
  
  
  METHODS
  Twenty-three women divided into OKG (N = 7), OG (N = 8) and YG (N = 8) had their functional performance, lower-limb loading distribution and balance compared before and after 13 weeks of a twice-weekly progressive resistance training program.
  
  
  RESULTS
  At baseline, the OKG showed lower functional performance and unilateral balance, and impaired lower-limb loading distribution compared to the OG and the YG (p<0.05). After resistance training, the OKG showed improvements in functional performance (∼13% in sit-to-stand and rising from the floor, ∼16% in stair-climbing and ∼23% in 6-minute walking (6 MW)), unilateral balance (∼72% and ∼78% in TKA and OA leg, respectively) and lower-limb loading distribution, which were greater than those observed in the OG and the YG. The OKG showed post-training 6 MW performance similar to that of the OG at baseline. Sit-to-stand performance and unilateral stand balance were further restored to post-training levels of the OG and to baseline levels of the YG.
  
  
  CONCLUSIONS
  Resistance training partially restored functional, balance and lower-limb loading deficits in older women with TKA and OA in the contralateral knee. These results suggest that resistance training may be an important tool to counteract mobility impairments commonly found in this population.
authors: Exercise and Chronic Disease Research Laboratory, Physical Education Department, School of Sciences, São Paulo State University (UNESP), Bauru, SP, Brazil.
authors: Emmanuel Gomes
authors: EG
authors: Ciolac
authors: Exercise and Chronic Disease Research Laboratory, Physical Education Department, School of Sciences, São Paulo State University (UNESP), Bauru, SP, Brazil.
authors: José Messias Rodrigues da
authors: JM
authors: Silva
authors: Laboratory of Kinesiology, Institute of Orthopedics and Traumatology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil.
authors: Júlia Maria D'Andréa
authors: JM
authors: Greve
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000704:Analysis of Variance; D019645:Arthroplasty, Replacement, Knee / Q000534:rehabilitation*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D053580:Muscle Strength / Q000502:physiology; D020370:Osteoarthritis, Knee / Q000534:rehabilitation*; D020127:Recovery of Function; D055070:Resistance Training / Q000379:methods*; D018709:Statistics, Nonparametric; D013997:Time Factors; D016896:Treatment Outcome; D016138:Walking / Q000502:physiology; D055815:Young Adult