Related Experiment Video
Updated: Sep 24, 2025
04:45
Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice
Published on: May 5, 2022
2.6K
Reliability of the heart rate variability threshold during treadmill exercise.
Trent A Hargens1, Shane Chambers1, Nicholas D Luden1
1Department of Kinesiology, Human Performance Laboratory, James Madison University, Harrisonburg, Virginia, USA.
Clinical Physiology and Functional Imaging
|May 7, 2022
Summary
This study confirms treadmill exercise is reliable for determining heart rate variability threshold (HRVT), a measure of autonomic balance. HRVT derived from SDNN showed strong agreement with the ventilatory threshold (VT).
Area of Science:
- Exercise Physiology
- Autonomic Nervous System Function
- Cardiorespiratory Fitness
Background:
- Heart rate variability threshold (HRVT) assesses autonomic balance but has primarily been validated using cycle ergometry.
- The reliability and comparability of HRVT during treadmill exercise remain underexplored.
- Understanding HRVT during treadmill exercise is crucial for its clinical application in diverse exercise settings.
Purpose of the Study:
- To evaluate the reliability of HRVT during maximal graded treadmill exercise.
- To compare HRVT, derived from various heart rate variability (HRV) metrics, with the ventilatory threshold (VT).
- To determine the viability of treadmill exercise for HRVT assessment.
Main Methods:
- Ten healthy college-aged males underwent two maximal graded exercise tests on a treadmill.
- Heart rate and HRVT data were collected using a Polar RS800CX watch.
- HRVT was calculated using RMSSD, SDNN, and SD1 metrics; VT was determined using a metabolic cart.
Main Results:
- Reliable HRVT and VT values were observed between the two testing trials.
- Averaged HRVT values for RMSSD and SD1 were significantly lower than the averaged VT (p < 0.05).
- Averaged HRVT derived from SDNN did not significantly differ from the VT.
Conclusions:
- Treadmill exercise is a viable and reliable method for determining the HRVT.
- HRVT calculated using the SDNN metric demonstrates strong agreement with the VT.
- SDNN-derived HRVT may serve as a valuable, non-invasive indicator of cardiorespiratory stress during treadmill testing.
Keywords:
V-slope methodautonomic activitygraded exercise testroot mean square of successive differences of continuous R−R intervalsstandard deviation of instantaneous beat intervalsventilatory thresholdMore Related Videos
08:12Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
20.0K
05:51Assessing the Accuracy of Fitness Smartwatch Data for Cardiovascular and Physical Activity Monitoring: A Validation Study in Digital Health
Published on: February 21, 2025
687
Related Concept Videos
01:26Exercise Stress Test
534
Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
534
01:30Factors Influencing Heart Rate
5.1K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
5.1K
01:25Correlation between ECG and Cardiac Cycle
8.7K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
8.7K
01:20Exercise and Cardiovascular Response
1.1K
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
1.1K
01:31Regulation of Heart Rates
2.3K
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
2.3K
01:23Assessment of blood pressure in brachial artery(two-step method)
966
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
966