Key result
Resistance exercise with a 30-second versus 90-second rest interval resulted in similar 24-hour systolic blood pressure (113 vs 112 mmHg) and did not promote post-exercise hypotension, though the shorter interval transiently increased heart rate.
Why the study?
Does a 30-second rest interval compared to a 90-second rest interval affect cardiovascular responses after resistance exercise in young normotensive men?
RCT (n=20)
Open-label
Simple randomization
No
Does a 30-second rest interval compared to a 90-second rest interval affect cardiovascular responses after resistance exercise in young normotensive men?
Absolute Event Rate: 113% vs 112%
p-value: p=0.360
A shorter rest interval (30 seconds) during low-intensity resistance exercise transiently increases heart rate for 1 hour post-exercise compared to a 90-second interval, but does not affect 24-hour blood pressure responses in healthy young men.
Shorter rest intervals may be used without 24-hour BP impact in young normotensive men; extends acute hemodynamic data for resistance exercise protocols.
OBJECTIVE: To analyze the acute effect of rest interval length on cardiovascular response after resistance exercise. METHODS: Twenty young eutrophic men (23.9 ± 0.7 years;23.8 ± 0.5 kg/m²) performed two experimental sessions in a random order: resistance exercise with a 30-second (I30) and with a 90-second (I90) rest interval between sets. Both sessions included five exercises with 50% of the one-repetition maximum. Before and 24 hours after the experimental sessions, systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), and rate-pressure product (RPP) were obtained. RESULTS: The SBP, DBP and RPP responses were similar between the I30 and I90 sessions (p>0.05), while the HR after I30 was significantly higher than after I90 (p<0.01) for the first hour after exercise. The cardiovascular responses during the first 24 hours were similar between both sessions (p>0.05). CONCLUSION: Different recovery intervals did not promote post-exercise hypotension, however, a short rest interval increases heart rate for 1 hour after exercise. In addition, within 24 hours of the responses were similar between groups.
No takes yet. Share an insight, caveat, or question.
Andrade-Lima et al. (2013) conducted an RCT in Healthy (n=20). Resistance exercise with 30-second rest interval vs. Resistance exercise with 90-second rest interval was evaluated on 24-hour systolic blood pressure (mmHg) (p=0.360). Resistance exercise with a 30-second versus 90-second rest interval resulted in similar 24-hour systolic blood pressure (113 vs 112 mmHg) and did not promote post-exercise hypotension, though the shorter interval transiently increased heart rate.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: