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 Experiment Videos

Left ventricular ejection fraction during incremental and steady state exercise

C Foster1, R A Gal, S C Port

  • 1Milwaukee Heart Institute, WI 53201-0342, USA.

Medicine and Science in Sports and Exercise
|December 1, 1995
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Establishing an International Psychoanalytic Nurses Alliance [IPNA].

Journal of psychiatric and mental health nursing·2026
Same author

Late diagnosis of paediatric HIV infection in high-income countries: Lessons from the HIV Perinatal Virtual Clinic.

HIV medicine·2025
Same author

Co-designing a web-based intervention (RESTORE) to support self-management of cancer-related fatigue in people living with a brain tumour.

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer·2025
Same author

Understanding healthcare workers' experiences of face mask use in healthcare settings during the COVID-19 pandemic: an interview study.

Infection prevention in practice·2025
Same author

"Such a different type of tiredness": people with brain tumour, their caregivers', and healthcare professionals' qualitative perceptions of cancer-related fatigue.

Journal of cancer survivorship : research and practice·2024
Same author

Healthcare professionals' knowledge, understanding and confidence to manage chronic pain after cancer treatment: A UK survey.

European journal of oncology nursing : the official journal of European Oncology Nursing Society·2024
Same journal

The Impact of Cardiorespiratory Fitness on Cytotoxic T Cell Metabolism and Function.

Medicine and science in sports and exercise·2026
Same journal

Female Athletes Through the Lifespan: Clinical Considerations and a Call for Comprehensive Sports Medicine Healthcare.

Medicine and science in sports and exercise·2026
Same journal

Artificial Intelligence in Exercise Science and Sports Medicine.

Medicine and science in sports and exercise·2026
Same journal

Non-Vigorous Physical Activity Associated with Reduced Hospitalization Risk with or without Diabetes or Peripheral Artery Disease: Study of Latinos.

Medicine and science in sports and exercise·2026
Same journal

One Step Further in Resistance Training Prescription: Do Recent Updates Require Reconsideration?

Medicine and science in sports and exercise·2026
Same journal

Response.

Medicine and science in sports and exercise·2026
See all related articles

Left ventricular ejection fraction (LVEF) increases during incremental exercise, reaching near maximal levels at the ventilatory threshold. Steady-state exercise further enhances LVEF over time.

Area of Science:

  • Cardiology
  • Exercise Physiology
  • Cardiac Imaging

Background:

  • Left ventricular (LV) function is extensively studied during incremental exercise but not during steady-state exercise.
  • Steady-state exercise is commonly used in exercise training protocols.

Purpose of the Study:

  • To evaluate left ventricular ejection fraction (LVEF) during steady-state exercise.
  • To compare LVEF during incremental and steady-state exercise.

Main Methods:

  • Utilized first-pass radionuclide angiography (RNA) to assess LVEF.
  • Studied 10 healthy volunteers during both incremental and steady-state upright cycle ergometer exercise.
  • Measured LVEF at rest, ventilatory threshold (VT), maximal exercise, and during 10, 20, and 30 minutes of steady-state exercise at VT.

Related Experiment Videos

Main Results:

  • During incremental exercise, LVEF increased from rest (61% +/- 5%) to VT (73% +/- 5%), with no further increase at maximal exercise (73% +/- 5%).
  • During steady-state exercise at VT, LVEF increased from rest (61% +/- 5%) to 73% +/- 5% after initial exercise.
  • LVEF continued to increase during steady-state exercise, reaching 78% +/- 6% at 20 minutes and 79% +/- 3% at 30 minutes.

Conclusions:

  • LVEF appears to be near maximal during submaximal exercise at the ventilatory threshold.
  • Continuous steady-state exercise leads to further increases in LVEF over time.