Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Sound Intensity00:58

Sound Intensity

4.7K
The loudness of a sound source is related to how energetically the source is vibrating, consequently making the molecules of the propagation medium vibrate. To measure the loudness of a source, the physical quantity of interest is the intensity. This is defined as the energy emitted per unit of time per unit of area perpendicular to the sound wave's propagation direction. Since the total energy is greater if the source vibrates for a longer duration and over a larger area, dividing the...
4.7K
Sound Intensity Level00:53

Sound Intensity Level

4.8K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.8K
Intensity Of Electromagnetic Waves01:22

Intensity Of Electromagnetic Waves

5.8K
The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:
5.8K
Intensity and Pressure of Sound Waves01:05

Intensity and Pressure of Sound Waves

1.7K
The intensity of sound waves can be related to displacement and pressure amplitudes by using their wave expressions and the definition of intensity. The critical step to achieve this is to write the power delivered by the particles on the wave as the product of force and velocity and simplify the force per unit area as the pressure. The velocity of the medium's particles can be derived from the displacement.
Unlike the time average of a sinusoidal term, which is zero since it is positive...
1.7K
IR Spectrum Peak Intensity: Amount of IR-Active Bonds00:55

IR Spectrum Peak Intensity: Amount of IR-Active Bonds

1.0K
When infrared radiation is passed through a molecule, absorption occurs if the molecule's vibration leads to a substantial change in its bond dipole moment. Transitions between vibrational energy levels, typically corresponding to infrared frequencies (4000–400 cm−1), allow absorption if the vibration significantly alters the dipole moment, making the molecule infrared active. The molecular bonds have different stretching and bending vibrations, resulting in various peaks with...
1.0K
IR Spectrum Peak Intensity: Dipole Moment01:20

IR Spectrum Peak Intensity: Dipole Moment

1.5K
The dipole moment of a bond is the product of the partial charge on either atom and the distance between them. Dipole moments influence the efficiency of IR absorption and the peak intensity. When a bond with a dipole moment is placed in an electric field, the direction of the field determines if the bond is compressed or stretched. Electromagnetic radiation consists of an electric field component that rapidly reverses direction. It follows that polar bonds are alternately stretched and...
1.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Risk Stratification in Aortic Stenosis: Exercise Hemodynamics to Refine Risk in Early Cardiac Damage Stages.

European heart journal. Cardiovascular Imaging·2026
Same author

Sitting still while the world gets sicker: Rethinking physical inactivity as a public health emergency.

BMC global and public health·2026
Same author

Chronotropic incompetence in cardiovascular disease: a call for the establishment of a standardised and valid detection method.

European journal of preventive cardiology·2026
Same author

Cardiorespiratory Exercise Intensity Prescription in Cardiovascular Rehabilitation: Do Updated Guideline Recommendations Reflect Real Individual Effort Responses?

European journal of preventive cardiology·2026
Same author

Exercise volume modulates cardiac protection in a type 2 diabetic rat model: differential effects of high- and low-volume moderate-intensity endurance exercise training on diabetic cardiomyopathy.

Cardiovascular diabetology. Endocrinology reports·2026
Same author

Type 2 diabetes is related to neurochemical alterations in the default mode network: An exploratory cross-sectional magnetic resonance spectroscopy study.

NeuroImage·2026
Same journal

Therapeutic potential of crude protein extracts from two Egyptian freshwater snails Lanistes carinatus and Bellamya unicolor.

Scientific reports·2026
Same journal

Microbial contamination of donor corneas and post-keratoplasty endophthalmitis: a comparison between Japanese and U.S. eye banks using cold storage.

Scientific reports·2026
Same journal

Prevalence and contributing factors of virological non-suppression among adult patients on first-line antiretroviral therapy in tertiary hospitals in Ethiopia.

Scientific reports·2026
Same journal

An in vitro comparison of color stability between alkasite and different restorative materials in various staining solutions.

Scientific reports·2026
Same journal

Toward accessible mRNA LNP formulation: systematic evaluation of mixing strategies and key parameters.

Scientific reports·2026
Same journal

A network analysis of personality traits, mentalizing, and psychological health in Chinese college students.

Scientific reports·2026
See all related articles

Related Experiment Video

Updated: Jan 26, 2026

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
08:27

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement

Published on: February 22, 2022

3.6K

High intensity training improves cardiac function in healthy rats.

Maxim Verboven1, Anne Cuypers1, Dorien Deluyker1

  • 1Biomedical Research Institute, Hasselt University, Hasselt, Belgium.

Scientific Reports
|April 6, 2019
PubMed
Summary
This summary is machine-generated.

High-intensity interval training (HIIT) and moderate-intensity training (MIT) both improve cardiac function in healthy rats. However, HIIT uniquely enhances cardiac hypertrophy and capillary density, suggesting it as a preferred exercise modality.

More Related Videos

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
07:40

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training

Published on: October 10, 2019

7.7K
An Innovative Running Wheel-based Mechanism for Improved Rat Training Performance
07:51

An Innovative Running Wheel-based Mechanism for Improved Rat Training Performance

Published on: September 19, 2016

9.3K

Related Experiment Videos

Last Updated: Jan 26, 2026

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
08:27

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement

Published on: February 22, 2022

3.6K
Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
07:40

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training

Published on: October 10, 2019

7.7K
An Innovative Running Wheel-based Mechanism for Improved Rat Training Performance
07:51

An Innovative Running Wheel-based Mechanism for Improved Rat Training Performance

Published on: September 19, 2016

9.3K

Area of Science:

  • Cardiovascular Physiology
  • Exercise Science
  • Sports Medicine

Background:

  • Exercise training is crucial for cardiovascular disease prevention.
  • Moderate-intensity training (MIT) is widely recommended.
  • High-intensity interval training (HIIT) is emerging as a beneficial alternative.

Purpose of the Study:

  • To compare the cardiac remodeling effects of MIT and HIIT in healthy rats.
  • To evaluate cardiac function and tissue adaptations between training groups.
  • To determine the optimal exercise modality for cardiac health.

Main Methods:

  • Healthy male Sprague-Dawley rats underwent 13 weeks of either MIT or HIIT.
  • Sedentary rats served as the control group.
  • Cardiac function assessed via echocardiography and hemodynamic measurements; cardiac tissue analyzed for capillary density and fibrosis.

Main Results:

  • Both MIT and HIIT improved global cardiac parameters similarly.
  • Collagen content (fibrosis) was reduced in both exercise groups.
  • HIIT uniquely induced beneficial cardiac hypertrophy and increased capillary density.

Conclusions:

  • MIT and HIIT are equally effective in improving cardiac function in healthy rats.
  • HIIT offers additional benefits, including enhanced cardiac hypertrophy and capillary density.
  • HIIT may be a preferred training modality for athletes and patients for improved cardiac health.