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Cardiac autonomic responses after resistance exercise in treated hypertensive subjects.

Trevizani GA, Peçanha T, Nasario-Junior O, Vianna JM, Silva LP, Nadal J - Front Physiol (2015)

Bottom Line: Mean values of HRV indices were reduced in the post-exercise period compared to the resting period (HT: lnHF: 4.7 ± 1.4 vs. 2.4 ± 1.2 ms(2); NT: lnHF: 4.8 ± 1.5 vs. 2.2 ± 1.1 ms(2), p < 0.01).The results indicate that HRV is equally suppressed after RE in normotensive and hypertensive individuals.These findings suggest that a single session of RE does not bring additional cardiac autonomic stress to treated hypertensive subjects.

View Article: PubMed Central - PubMed

Affiliation: Biomedical Engineering Program COPPE, Universidade Federal do Rio de Janeiro Rio de Janeiro, Brazil.

ABSTRACT
The aim of this study was to assess and to compare heart rate variability (HRV) after resistance exercise (RE) in treated hypertensive and normotensive subjects. Nine hypertensive men [HT: 58.0 ± 7.7 years, systolic blood pressure (SBP) = 133.6 ± 6.5 mmHg, diastolic blood pressure (DBP) = 87.3 ± 8.1 mmHg; under antihypertensive treatment] and 11 normotensive men (NT: 57.1 ± 6.0 years, SBP = 127 ± 8.5 mmHg, DBP = 82.7 ± 5.5 mmHg) performed a single session of RE (2 sets of 15-20 repetitions, 50% of 1 RM, 120 s interval between sets/exercise) for the following exercises: leg extension, leg press, leg curl, bench press, seated row, triceps push-down, seated calf flexion, seated arm curl. HRV was assessed at resting and during 10 min of recovery period by calculating time (SDNN, RMSSD, pNN50) and frequency domain (LF, HF, LF/HF) indices. Mean values of HRV indices were reduced in the post-exercise period compared to the resting period (HT: lnHF: 4.7 ± 1.4 vs. 2.4 ± 1.2 ms(2); NT: lnHF: 4.8 ± 1.5 vs. 2.2 ± 1.1 ms(2), p < 0.01). However, there was no group vs. time interaction in this response (p = 0.8). The results indicate that HRV is equally suppressed after RE in normotensive and hypertensive individuals. These findings suggest that a single session of RE does not bring additional cardiac autonomic stress to treated hypertensive subjects.

No MeSH data available.


Time-domain heart rate variability indices (SDNN, RMSSD, and pNN50) at rest (PRE) and during 5–10 min of recovery (POST). HT, hypertensive group; NT, normotensive group; *p < 0.05.
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Figure 2: Time-domain heart rate variability indices (SDNN, RMSSD, and pNN50) at rest (PRE) and during 5–10 min of recovery (POST). HT, hypertensive group; NT, normotensive group; *p < 0.05.

Mentions: The mean values of the HRV time-domain indices were reduced in the post-exercise period compared to the resting period in both groups (time effect: p < 0.01 for all analyses), however there was no difference in this response between NT and HT (group vs. time interactions: p = 0.2–0.4 depending on the index analyzed; Figure 2). Regarding the frequency domain indices, we observed a significant reduction in the LF (ms2) and HF (ms2 and nu) and an increase in the LF (nu) and LF/HF in the post-exercise period in comparison to resting values (time effect: p < 0.01 for all analyses), with no differences between groups in these responses (group vs. time interactions: p = 0.2–0.8 depending on the index analyzed; Figure 3).


Cardiac autonomic responses after resistance exercise in treated hypertensive subjects.

Trevizani GA, Peçanha T, Nasario-Junior O, Vianna JM, Silva LP, Nadal J - Front Physiol (2015)

Time-domain heart rate variability indices (SDNN, RMSSD, and pNN50) at rest (PRE) and during 5–10 min of recovery (POST). HT, hypertensive group; NT, normotensive group; *p < 0.05.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4584945&req=5

Figure 2: Time-domain heart rate variability indices (SDNN, RMSSD, and pNN50) at rest (PRE) and during 5–10 min of recovery (POST). HT, hypertensive group; NT, normotensive group; *p < 0.05.
Mentions: The mean values of the HRV time-domain indices were reduced in the post-exercise period compared to the resting period in both groups (time effect: p < 0.01 for all analyses), however there was no difference in this response between NT and HT (group vs. time interactions: p = 0.2–0.4 depending on the index analyzed; Figure 2). Regarding the frequency domain indices, we observed a significant reduction in the LF (ms2) and HF (ms2 and nu) and an increase in the LF (nu) and LF/HF in the post-exercise period in comparison to resting values (time effect: p < 0.01 for all analyses), with no differences between groups in these responses (group vs. time interactions: p = 0.2–0.8 depending on the index analyzed; Figure 3).

Bottom Line: Mean values of HRV indices were reduced in the post-exercise period compared to the resting period (HT: lnHF: 4.7 ± 1.4 vs. 2.4 ± 1.2 ms(2); NT: lnHF: 4.8 ± 1.5 vs. 2.2 ± 1.1 ms(2), p < 0.01).The results indicate that HRV is equally suppressed after RE in normotensive and hypertensive individuals.These findings suggest that a single session of RE does not bring additional cardiac autonomic stress to treated hypertensive subjects.

View Article: PubMed Central - PubMed

Affiliation: Biomedical Engineering Program COPPE, Universidade Federal do Rio de Janeiro Rio de Janeiro, Brazil.

ABSTRACT
The aim of this study was to assess and to compare heart rate variability (HRV) after resistance exercise (RE) in treated hypertensive and normotensive subjects. Nine hypertensive men [HT: 58.0 ± 7.7 years, systolic blood pressure (SBP) = 133.6 ± 6.5 mmHg, diastolic blood pressure (DBP) = 87.3 ± 8.1 mmHg; under antihypertensive treatment] and 11 normotensive men (NT: 57.1 ± 6.0 years, SBP = 127 ± 8.5 mmHg, DBP = 82.7 ± 5.5 mmHg) performed a single session of RE (2 sets of 15-20 repetitions, 50% of 1 RM, 120 s interval between sets/exercise) for the following exercises: leg extension, leg press, leg curl, bench press, seated row, triceps push-down, seated calf flexion, seated arm curl. HRV was assessed at resting and during 10 min of recovery period by calculating time (SDNN, RMSSD, pNN50) and frequency domain (LF, HF, LF/HF) indices. Mean values of HRV indices were reduced in the post-exercise period compared to the resting period (HT: lnHF: 4.7 ± 1.4 vs. 2.4 ± 1.2 ms(2); NT: lnHF: 4.8 ± 1.5 vs. 2.2 ± 1.1 ms(2), p < 0.01). However, there was no group vs. time interaction in this response (p = 0.8). The results indicate that HRV is equally suppressed after RE in normotensive and hypertensive individuals. These findings suggest that a single session of RE does not bring additional cardiac autonomic stress to treated hypertensive subjects.

No MeSH data available.