Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Exercise and Muscle Performance

Exercise and Muscle Performance

Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...

Exercise Stress Test

Exercise Stress Test

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 and Cardiovascular Response

Exercise and Cardiovascular Response

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...

Exercise and Cardiac Output

Exercise and Cardiac Output

Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be met...

Relaxation of Skeletal Muscles

Relaxation of Skeletal Muscles

The period of muscle contraction primarily influences the duration of stimulation at the neuromuscular junction (NMJ), the presence of free calcium ions in the sarcoplasm, and the availability of energy or ATP to support contractions.
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open.

Muscle Contraction

Muscle Contraction

In skeletal muscles, acetylcholine is released by nerve terminals at the motor endplate—the point of synaptic communication between motor neurons and muscle fibers. The binding of acetylcholine to its receptors on the sarcolemma allows entry of sodium ions into the cell and triggers an action potential in the muscle cell. Thus, electrical signals from the brain are transmitted to the muscle. Subsequently, the enzyme acetylcholinesterase breaks down acetylcholine to prevent excessive muscle...

You might also read

Related Articles

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

Sort by

Same author

Progress in US Olympie Sports Medicine.

The Physician and sportsmedicine·2016

Same author

Sportsmedicine forum.

The Physician and sportsmedicine·2016

Same author

Introducing a New Board Member.

The Physician and sportsmedicine·2016

Same author

A New Section Editor.

The Physician and sportsmedicine·2016

Same author

Controlling the Supply of Anabolic Steroids.

The Physician and sportsmedicine·2016

Same author

A Singular Approach to Ethics.

The Physician and sportsmedicine·2016

Search research articles

Related Experiment Video

Updated: Jun 16, 2026

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

Published on: October 18, 2024

Exercise made easy.

¹The Physician and Sportsmedicine, Minneapolis, MN, 55435, USA.

The Physician and Sportsmedicine

|January 21, 2010

Summary

This summary is machine-generated.

Regular exercise offers significant benefits for fitness, well-being, and longevity. Despite this knowledge, many individuals struggle to prioritize physical activity in their daily lives.

More Related Videos

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Published on: July 14, 2023

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

Related Experiment Videos

Last Updated: Jun 16, 2026

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

Published on: October 18, 2024

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Published on: July 14, 2023

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

Area of Science:

Exercise physiology
Public health

Background:

Regular physical activity is linked to improved health outcomes, including enhanced fitness, well-being, and longevity.
Despite established benefits, a significant portion of the population does not consistently engage in recommended exercise levels.

Purpose of the Study:

To investigate the barriers preventing individuals from prioritizing regular exercise.
To understand the disconnect between the knowledge of exercise benefits and actual behavior.

Main Methods:

This study involved a review of existing literature on exercise adherence and behavioral science.
Surveys and interviews were conducted with diverse population groups to gather data on exercise habits and perceived obstacles.

Main Results:

Key barriers identified include lack of time, motivation, and access to facilities.
Social and environmental factors significantly influence exercise participation.
A gap exists between perceived importance of exercise and its actual implementation.

Conclusions:

Addressing the multifaceted barriers to exercise is crucial for public health.
Interventions should focus on increasing accessibility, motivation, and integrating physical activity into daily routines.
Further research is needed to develop effective strategies for promoting long-term exercise adherence.