Comparing eccentric muscular contraction intensity with and without blood flow restricted upon selected response from hemodynamic factors of healthy men
Poster Presentation XML
Authors
1PhD Student of Exercise Physiology, Department of Exercise Physiology, Science and Researches Branch, Islamic Azad University, Tehran, Iran.
2Assistant Professor Department of physical education science and research branch islamic azad uinversity tehran iran
3Exercise Physiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran
4Teacher
Abstract
Introduction: The purpose of this study was to compare eccentric muscular contraction intensity with and without blood flow restricted upon selected response from hemodynamic factors of healthy men.
Methodology: Statistic samples were consisted of 16 healthy young men 27.8+-2.8 years old who exercise once a week recreationally and also were selected targeted among volunteers. Before performing the exercise protocol, resting heart rate, systolic, diastolic, mean pressure, and rate double product were measured in all subjects. The Subjects performed in the form of crossover in two types of intensity; 70% maximal voluntary contraction without blood flow restriction (BFR) and 30% maximal voluntary contraction with (BFR) in eccentric contraction of leg’s quadriceps and hamstring muscle by isokinetic machine for four sets. Using digital barometric, hemodynamic changes was recorded after the performed of any sets and the mean of heir were taken as post-test. Results were analyzed by repeated measuring test and Bonferroni follow up test in the level of (P≤0.05) and using SPSS 18.
Results: The result show that there was significant difference between pre-and post-test in heart rate, systolic, diastolic, mean blood pressure and rate double product in 30% with BFR and 70% without BFR (P≤0.05). also, there was no significant difference between two types of contraction intensity in post-test.
Discussion: Therefore, exercise likely has had effect of the same with 30% mvc compound BFR upon hemodynamic factors comparing 70% mvc without BFR. Therefore, it is a peace of mind for people who want to use contractions with low intensity with restricting blood flow. Because this method probably does not add extra pressure to the heart than high intensity exercise without blood flow restriction.
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