IJSM/4616/16.5.2015/MPS
Training & Testing
Hemodynamic Responses and Perceived Exertion During Continuous and Discontinuous Resistance Exercise
Authors
R. Massaferri1, L. Matos-Santos2, P. Farinatti3, W. D. Monteiro2
Affiliations
1
Key words ▶ muscle strength ● ▶ strength training ● ▶ photoplethysmography ● ▶ blood pressure ● ▶ borg scale ●
Abstract
Salgado de Oliveira University, PGCAF, Niterói, Brazil Rio de Janeiro State University, IEFD, Rio de Janeiro, Brazil 3 School of Physical Education, Rio de Janeiro State University, Rio de Janeiro, Brazil
▼
This study compared acute responses of systolic and diastolic blood pressure (SBP/DBP), cardiac output (Q), heart rate (HR), stroke volume (SV), total peripheral resistance (TPR) and rate of perceived exertion (RPE) during resistance exercise performed continuously and discontinuously. Hemodynamic responses and RPE were assessed in the last of 4 sets of 12 repetitions of the knee extension with load corresponding to 70 % of 12 repetition maximum, performed continuously (C) or discontinuously, with pauses of 5 s (D5) or 10 s (D10) interspersed in the middle of sets. The increase in SBP was higher for D10 (34.0 ± 8.4 %)
Introduction
▼
accepted after revision April 15, 2015 Bibliography DOI http://dx.doi.org/ 10.1055/s-0035-1549957 Published online: 2015 Int J Sports Med © Georg Thieme Verlag KG Stuttgart · New York ISSN 0172-4622 Correspondence Dr. Walace David Monteiro Rio de Janeiro State University IEFD Rua São Francisco Xavier 524 sala 8133, Bloco F Maracanã Rio de Janeiro, RJ Brazil 20550-013 Tel.: + 55/21/2334 0775 Fax: + 55/21/2334 0222 [email protected]
The hemodynamic responses during resistance exercises are influenced by mechanical compression on blood vessels, which may cause a marked increase in blood pressure (BP), due to increased total peripheral resistance (TPR). The increase in BP and TPR might also elevate the cardiac output (Q), although only for a short period of time [7, 12]. For instance, values of BP as high as 480/350 mmHg have been reported during resistance exercise performed with large muscle mass and maximal intensity [12]. Hence it seems important to adopt strategies to reduce the potential increase of hemodynamic responses during resistance training sessions. One of the possible strategies that have been suggested to offset the increase in BP and heart rate (HR) during resistance exercise is to perform discontinuous sets, by adding a brief interruption at the middle of a given set of repetitions, instead of performing it continuously [1, 5]. Baum et al. (2003) [1] suggested that the inclusion of pauses while performing resistance exercises would mitigate the hemodynamic responses by decreasing the mechanical compression on the blood
and D5 (34.1 ± 13.2 %) vs. C (19.8 ± 10.3 %; P
Training & Testing
Hemodynamic Responses and Perceived Exertion During Continuous and Discontinuous Resistance Exercise
Authors
R. Massaferri1, L. Matos-Santos2, P. Farinatti3, W. D. Monteiro2
Affiliations
1
Key words ▶ muscle strength ● ▶ strength training ● ▶ photoplethysmography ● ▶ blood pressure ● ▶ borg scale ●
Abstract
Salgado de Oliveira University, PGCAF, Niterói, Brazil Rio de Janeiro State University, IEFD, Rio de Janeiro, Brazil 3 School of Physical Education, Rio de Janeiro State University, Rio de Janeiro, Brazil
▼
This study compared acute responses of systolic and diastolic blood pressure (SBP/DBP), cardiac output (Q), heart rate (HR), stroke volume (SV), total peripheral resistance (TPR) and rate of perceived exertion (RPE) during resistance exercise performed continuously and discontinuously. Hemodynamic responses and RPE were assessed in the last of 4 sets of 12 repetitions of the knee extension with load corresponding to 70 % of 12 repetition maximum, performed continuously (C) or discontinuously, with pauses of 5 s (D5) or 10 s (D10) interspersed in the middle of sets. The increase in SBP was higher for D10 (34.0 ± 8.4 %)
Introduction
▼
accepted after revision April 15, 2015 Bibliography DOI http://dx.doi.org/ 10.1055/s-0035-1549957 Published online: 2015 Int J Sports Med © Georg Thieme Verlag KG Stuttgart · New York ISSN 0172-4622 Correspondence Dr. Walace David Monteiro Rio de Janeiro State University IEFD Rua São Francisco Xavier 524 sala 8133, Bloco F Maracanã Rio de Janeiro, RJ Brazil 20550-013 Tel.: + 55/21/2334 0775 Fax: + 55/21/2334 0222 [email protected]
The hemodynamic responses during resistance exercises are influenced by mechanical compression on blood vessels, which may cause a marked increase in blood pressure (BP), due to increased total peripheral resistance (TPR). The increase in BP and TPR might also elevate the cardiac output (Q), although only for a short period of time [7, 12]. For instance, values of BP as high as 480/350 mmHg have been reported during resistance exercise performed with large muscle mass and maximal intensity [12]. Hence it seems important to adopt strategies to reduce the potential increase of hemodynamic responses during resistance training sessions. One of the possible strategies that have been suggested to offset the increase in BP and heart rate (HR) during resistance exercise is to perform discontinuous sets, by adding a brief interruption at the middle of a given set of repetitions, instead of performing it continuously [1, 5]. Baum et al. (2003) [1] suggested that the inclusion of pauses while performing resistance exercises would mitigate the hemodynamic responses by decreasing the mechanical compression on the blood
and D5 (34.1 ± 13.2 %) vs. C (19.8 ± 10.3 %; P
