title: Low-intensity resistance exercise does not affect cardiac autonomic modulation in patients with peripheral artery disease.
abstract: OBJECTIVE
  To analyze the effect of a single bout of resistance exercise on cardiac autonomic modulation in patients with peripheral artery disease.
  
  
  METHODS
  Fifteen patients with peripheral artery disease (age: 58.3±4.0 years) underwent the following sessions in a random order: resistance exercise (three sets of 10 repetitions of the six resistance exercises with a workload of 5-7 in the OMNI-RES scale) and control (similar to the resistance session; however, the resistance exercises were performed with no load). The frequency domain (low frequency, high frequency and sympathovagal balance) and symbolic analysis (0V, 1V and 2V patterns) of heart rate variability were obtained before and until one hour after the interventions.
  
  
  RESULTS
  After the resistance exercise and control sessions, similar increases were observed in the consecutive heartbeat intervals (control: 720.8±28.6 vs. 790.9±34.4 ms; resistance exercise: 712.9±30.1 vs. 756.8±37.9 ms; p<0.05) and in the pattern of the symbolic analysis with no variation (0V) (control: 25.1±3.5 vs. 33.4±4.1%; resistance exercise: 26.1±3.2 vs. 29.7±3.5%; p<0.05) until 50 min after both interventions. The pattern of two variations (2V) decreased similarly (control: 11.2±2.1 vs. 8.3±2.1%; resistance exercise: 9.5±1.7 vs. 7.8±1.7%; p<0.05). In contrast, the pattern of one variation (1V), the low and high frequency bands and sympathovagal balance did not change after the interventions (p>0.05).
  
  
  CONCLUSIONS
  A single bout of resistance exercise did not alter cardiac autonomic modulation in patients with peripheral artery disease.
authors.affiliation: Universidade de Pernambuco, Programa Associado de Pós-graduação em Educação Física, Recife/PE, Brazil.
authors.forename: Aluísio H R
authors.initials: AH
authors.lastname: Andrade Lima
authors.forename: Breno Quintella
authors.initials: BQ
authors.lastname: Farah
authors.forename: Lausanne B C C
authors.initials: LB
authors.lastname: Rodrigues
authors.forename: Alessandra S
authors.initials: AS
authors.lastname: Miranda
authors.forename: Sérgio L C
authors.initials: SL
authors.lastname: Rodrigues
authors.forename: Marilia
authors.initials: M
authors.lastname: de A Correia
authors.forename: Dario C
authors.initials: DC
authors.lastname: Sobral Filho
authors.forename: Cláudia L M
authors.initials: CL
authors.lastname: Forjaz
authors.forename: Wagner Luiz
authors.initials: WL
authors.lastname: Prado
authors.forename: Nelson
authors.initials: N
authors.lastname: Wolosker
authors.forename: Raphael M
authors.initials: RM
authors.lastname: Ritti-Dias
mesh_terms: D001341:Autonomic Nervous System / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology*; D015444:Exercise / Q000502:physiology; D005080:Exercise Test; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000503:physiopathology*; D055070:Resistance Training / Q000379:methods*