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Continuous blood pressure response at different intensities in leg press exercise
Nuno M F de Sousa1, Rodrigo F Magosso2, Thiago Dipp3
1Graduation Program Interunities - Bioengineering, EESC/FMRP/IQSC, USP, São Carlos, São Paulo, Brazil nunosfrade@gmail.com.
European Journal of Preventive Cardiology
|July 12, 2013
Summary
Continuous blood pressure monitoring during leg press exercise reveals that systolic blood pressure initially decreases before increasing during sets. Both exercise intensity and duration influence this blood pressure response.
Area of Science:
- Exercise Physiology
- Cardiovascular Response
- Resistance Training
Background:
- Traditional blood pressure monitoring during resistance exercise is often discontinuous and measured post-exercise.
- Limited understanding exists regarding the continuous blood pressure dynamics throughout resistance exercise sets.
Purpose of the Study:
- To continuously assess blood pressure and heart rate responses during incremental leg press exercise at various intensities.
- To investigate the influence of exercise intensity on these cardiovascular parameters.
Main Methods:
- Seven healthy normotensive men underwent incremental leg press testing to determine one repetition maximum (1RM).
- Photoplethysmography was used for simultaneous, continuous measurement of blood pressure and heart rate during exercise.
- Exercise was performed at varying relative intensities of 1RM.
Main Results:
- Peak heart rate, diastolic blood pressure (DBP), and systolic blood pressure (SBP) were observed at 70% 1RM.
- SBP exhibited a biphasic response: an initial decrease (12-22 mmHg over ~25 seconds) followed by an increase during exercise sets.
- The rate of SBP increase did not significantly differ across tested intensities.
Conclusions:
- Resistance exercise intensity and duration significantly impact blood pressure responses.
- Above 30% 1RM, SBP characteristically decreases initially and then rises towards the end of a leg press set.
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01:11Assessing Blood pressure in the Leg
Proper measurement of leg blood pressure is a critical skill for healthcare providers, ensuring precise and reliable readings. When performed correctly, this procedure informs patient care and enhances the efficacy of interventions. The following text outlines step-by-step guidelines to measure blood pressure in the leg, providing clarity and ease of understanding for practitioners.
Preparation:
Preparation:
01:21Sites for measuring blood pressure
Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
The Brachial Artery: Primary Site for Blood Pressure Measurement
01:17Measurement of Blood Pressure
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.
01:28Special considerations while measuring blood pressure
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
01:24Blood Pressure
The movement of blood in a human body, commonly referred to as blood flow, is determined by the volume of blood that traverses a certain section of the bodily system per unit time. It is the rhythmic contraction of the heart's ventricles that primarily instigates this movement. As the ventricles contract, blood is forced into the prominent arteries, which then flow from areas of greater pressure to lower pressure areas. This movement continues into smaller arteries and arterioles and...
01:30Blood Pressure
Blood pressure (BP) is the pressure or force of blood exerted on the artery's walls as it circulates through the body. It is essential for maintaining blood flow throughout the body.
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the diastolic...
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the diastolic...