title: Effects of eccentric-focused and conventional resistance training on strength and functional capacity of older adults.
abstract: The aim of the study was to assess the effect of eccentric training using a constant load with longer exposure time at the eccentric phase on knee extensor muscle strength and functional capacity of elderly subjects in comparison with a conventional resistance training program. Twenty-six healthy elderly women (age = 67 ± 6 years) were randomly assigned to an eccentric-focused training group (ETG; n = 13) or a conventional training group (CTG; n = 13). Subjects underwent 12 weeks of resistance training twice a week. For the ETG, concentric and eccentric phases were performed using 1.5 and 4.5 s, respectively, while for CTG, each phase lasted 1.5 s. Maximum dynamic strength was assessed by the one-repetition maximum (1RM) test in the leg press and knee extension exercises, and for functional capacity, subjects performed specific tests (6-m walk test, timed up-and-go test, stair-climbing test, and chair-rising test). Both groups improved knee extension 1RM (24-26 %; p = 0.021), timed up-and-go test (11-16 %; p < 0.001), 6-m walk test (9-12 %; p = 0.004), stair-climbing test (8-13 %; p = 0.007), and chair-rising test (15-16 %; p < 0.001), but there was no significant difference between groups. In conclusion, the strategy of increasing the exposure time at the eccentric phase of movement using the same training volume and intensity does not promote different adaptations in strength or functional capacity compared to conventional resistance training in elderly woman.
authors.affiliation: Physical Education Course, Faculty of Serra Gaúcha, Caxias do Sul, RS, Brazil. carolpieta@yahoo.com.br.|Exercise Research Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. carolpieta@yahoo.com.br.
authors.forename: Caroline Pieta
authors.initials: CP
authors.lastname: Dias
authors.affiliation: Physical Education Course, Faculty of Serra Gaúcha, Caxias do Sul, RS, Brazil.
authors.forename: Rafael
authors.initials: R
authors.lastname: Toscan
authors.affiliation: Physical Education Course, Faculty of Serra Gaúcha, Caxias do Sul, RS, Brazil.
authors.forename: Mainara
authors.initials: M
authors.lastname: de Camargo
authors.affiliation: Physical Education Course, Faculty of Serra Gaúcha, Caxias do Sul, RS, Brazil.
authors.forename: Evelyn Possobom
authors.initials: EP
authors.lastname: Pereira
authors.affiliation: Physical Education Course, Faculty of Serra Gaúcha, Caxias do Sul, RS, Brazil.
authors.forename: Nathália
authors.initials: N
authors.lastname: Griebler
authors.affiliation: Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS, Brazil.
authors.forename: Bruno Manfredini
authors.initials: BM
authors.lastname: Baroni
authors.affiliation: Physical Education Course, Faculty of Serra Gaúcha, Caxias do Sul, RS, Brazil.|Exercise Research Laboratory, Univates University Center, Lajeado, RS, Brazil.
authors.forename: Carlos Leandro
authors.initials: CL
authors.lastname: Tiggemann
mesh_terms: D000222:Adaptation, Physiological; D000368:Aged; D000375:Aging / Q000502:physiology*; D005080:Exercise Test; D017079:Exercise Tolerance / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D053580:Muscle Strength / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D055070:Resistance Training / Q000379:methods*
keywords: Elderly woman; Functional performance; One-repetition maximum (1RM); Strength training