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[Cardiovascular responses to resistance exercise are affected by workload and intervals between sets.]
Antonio Gil Castinheiras-Neto1, Irineu Rodrigues da Costa-Filho, Paulo Tarso Veras Farinatti
1Programa de Pós-Graduação em Ciências da Atividade Física, Universidade Salgado de Oliveira, Niterói, RJ.
Arquivos Brasileiros De Cardiologia
|August 31, 2010
Summary
Increasing rest intervals (RI) during resistance exercise (RE) lowers cardiovascular responses like systolic blood pressure (SBP). This finding is crucial for patient safety during strength training, regardless of exercise intensity (RM).
Area of Science:
- Exercise Physiology
- Cardiovascular Health
- Sports Science
Background:
- Cardiovascular response control during resistance exercise (RE) is vital for patient safety.
- Understanding the impact of exercise variables on physiological responses is key for safe training protocols.
Purpose of the Study:
- To investigate how repetition maximum (RM) and rest interval (RI) influence heart rate (HR), systolic blood pressure (SBP), and rate-pressure product (RPP) during RE.
- To provide data for optimizing RE protocols to minimize cardiovascular risk.
Main Methods:
- Twenty healthy subjects performed leg press exercises at 6 and 12 RM.
- Rest intervals were set proportionally to contraction time at 1:3 and 1:5 ratios.
- Continuous HR monitoring and end-set SBP measurements were employed.
Main Results:
- Heart rate (HR) was influenced by workload and sets, but not rest interval (RI).
- Systolic blood pressure (SBP) was significantly affected by the number of sets and RI, with longer RIs reducing SBP.
- Rate-pressure product (RPP) increased with workload and sets but decreased with longer RIs.
Conclusions:
- Increased rest intervals (RI) are associated with reduced cardiovascular responses, particularly SBP, during resistance exercise.
- These findings suggest that adjusting RI is a practical method to manage cardiovascular strain during RE across different workloads.
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