title: Influence of recovery posture on blood pressure and heart rate after resistance exercises in normotensive subjects.
abstract: This study investigated the effects of body posture on systolic (SBP) and diastolic (DBP) blood pressure, mean arterial pressure (MAP), and heart rate (HR) after a session of resistance exercises. Twelve normotensive men were randomly assigned to either a control group (CG) or exercise group (EG). The EG performed 4 sets of 10 lifts at 80% of repetition maximum (10RM) using 4 different exercises. The BP and HR were assessed on different days in seated and supine postures at rest and at 10-minute intervals during 30 minutes of postexercise recovery. Except for DBP, a 3-way ANOVA revealed that postexercise SBP in EG was always lower than at rest during seated (minimum of 109.5 +/- 1.4 mm Hg at 10 min vs. 119.2 +/- 3.4 mm Hg at rest; p < 0.01) and supine recovery (minimum of 112.7 +/- 3.0 mm Hg at 20 min vs. 118.4 +/- 1.7 mm Hg at rest; p < 0.05). The MAP during recovery in the seated posture was lower than at rest (minimum 83.3 +/- 2.6 mm Hg at 30 min vs. 89.3 +/- 0.9 mm Hg at rest; p < 0.05), whereas in the supine posture, no difference was identified (minimum 83.6 +/- 1.9 mm Hg at 10 min vs. 87.1 +/- 1.8 mm Hg at rest; p > 0.05). The HR at 10 minutes (82.0 +/- 4.8 bpm; p < 0.01), 20 minutes ([83.7 +/- 6.3 bpm; p < 0.05), and 30 minutes (80.5 +/- 6.2 bpm; p < 0.01) of recovery during the seated posture was higher than at rest (71.5 +/- 2.1 bpm). In contrast, in the supine posture, HR was higher than at rest (66.8 +/- 3.7 bpm; p < 0.01) throughout 10 minutes (79.7 +/- 5.3 bpm) and 20 minutes of recovery (74.5 +/- 4.2 bpm). In conclusion, the postexercise hypotensive response can be affected by posture during BP assessment.
authors.affiliation: Laboratório de Atividade Física e Promoção da Saúde (LABSAU), Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil. farinatt@uerj.br
authors.forename: Paulo
authors.initials: P
authors.lastname: de Tarso Veras Farinatti
authors.forename: Fabio Yuzo
authors.initials: FY
authors.lastname: Nakamura
authors.forename: Marcos Doederlein
authors.initials: MD
authors.lastname: Polito
mesh_terms: D000704:Analysis of Variance; D015982:Bias; D001794:Blood Pressure / Q000502:physiology*; D002302:Cardiac Output / Q000502:physiology; D015984:Causality; D006339:Heart Rate / Q000502:physiology*; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D007022:Hypotension / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D008297:Male; D011187:Posture / Q000502:physiology*; D055070:Resistance Training / Q000379:methods*; D012146:Rest / Q000502:physiology*; D016683:Supine Position / Q000502:physiology; D013599:Systole / Q000502:physiology; D013997:Time Factors; D014655:Vascular Resistance / Q000502:physiology