title: Resistance exercise with different volumes: blood pressure response and forearm blood flow in the hypertensive elderly.
abstract: BACKGROUND
  The purpose of this study was to evaluate the effect of two sessions of resistance exercise with different volumes on post-exercise hypotension, forearm blood flow, and forearm vascular resistance in hypertensive elderly subjects.
  
  
  METHODS
  The study was conducted with ten hypertensive elderly (65±3 years, 28.7±3 kg/m(2)) subjected to three experimental sessions, ie, a control session, exercise with a set (S1), and exercise with three sets (S3). For each session, the subjects were evaluated before and after intervention. In the pre-intervention period, blood pressure, forearm blood flow, and forearm vascular resistance were measured after 10 minutes of rest in the supine position. Thereafter, the subjects were taken to the gym to perform their exercise sessions or remained at rest during the same time period. Both S1 and S3 comprised a set of ten repetitions of ten exercises, with an interval of 90 seconds between exercises. Subsequently, the measurements were again performed at 10, 30, 50, 70, and 90 minutes of recovery (post-intervention) in the supine position.
  
  
  RESULTS
  Post-exercise hypotension was greater in S3 than in S1 (systolic blood pressure, -26.5±4.2 mmHg versus -17.9±4.7 mmHg; diastolic blood pressure, -13.8±4.9 mmHg versus -7.7±5 mmHg, P<0.05). Similarly, forearm blood flow and forearm vascular resistance changed significantly in both sessions with an increase and decrease, respectively, that was more evident in S3 than in S1 (P<0.05).
  
  
  CONCLUSIONS
  Resistance exercises with higher volume were more effective in causing post-exercise hypotension, being accompanied by an increase in forearm blood flow and a reduction of forearm vascular resistance.
authors.affiliation: Physical Education Department, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Aline de Freitas
authors.initials: Ade F
authors.lastname: Brito
authors.affiliation: Research Laboratory for Physical Training Applied to Performance and Health, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Caio Victor Coutinho
authors.initials: CV
authors.lastname: de Oliveira
authors.affiliation: Physical Education Department, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Maria do Socorro
authors.initials: Mdo S
authors.lastname: Brasileiro-Santos
authors.affiliation: Physical Education Department, Federal University of Paraíba, João Pessoa, Brazil.
authors.forename: Amilton da Cruz
authors.initials: Ada C
authors.lastname: Santos
mesh_terms: D000368:Aged; D001794:Blood Pressure; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D005542:Forearm / Q000098:blood supply*; D006339:Heart Rate; D006801:Humans; D006973:Hypertension / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D057774:Post-Exercise Hypotension / Q000503:physiopathology*; D055070:Resistance Training / Q000379:methods*; D014655:Vascular Resistance / Q000502:physiology
keywords: blood pressure; elderly; hypertension; post-exercise hypotension; resistance exercise