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

Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

4.7K
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
4.7K
Relaxation of Skeletal Muscles01:29

Relaxation of Skeletal Muscles

6.1K
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....
6.1K
Smooth Muscle Contraction01:25

Smooth Muscle Contraction

8.1K
Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
8.1K
Somatic Spinal Reflexes01:22

Somatic Spinal Reflexes

5.5K
Somatic spinal reflexes are rapid, involuntary muscular responses to external stimuli that involve the somatic musculature and the spinal cord.
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
5.5K
Peripherally and Centrally Acting Muscle Relaxants: A Comparison01:09

Peripherally and Centrally Acting Muscle Relaxants: A Comparison

4.6K
Skeletal muscle relaxants can target the central nervous system [CNS] to reduce muscle tension or act directly at the neuromuscular junction to induce temporary paralysis. These two classes of muscle relaxants are called centrally acting muscle relaxants and peripherally acting muscle relaxants. They differ in their action, mechanism, administration route, and clinical uses.
Centrally acting muscle relaxants can be further divided into spasmolytic and antispasmodic drugs. Spasmolytic...
4.6K
Static Equilibrium - II01:07

Static Equilibrium - II

10.0K
Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
10.0K

You might also read

Related Articles

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

Sort by
Same author

Design and application of a Tau seed amplification assay for screening inhibitors of Tau seeding.

Alzheimer's research & therapy·2025
Same author

Allergic Rhinitis.

The Medical clinics of North America·2024
Same author

Introducing lifestyle medicine into family medicine: Theory and applications.

International journal of psychiatry in medicine·2023
Same author

Quality Improvement Capacity in a Department of Family Medicine: A Mixed-Methods Study.

PRiMER (Leawood, Kan.)·2023
Same author

Resilience basins of complex systems: An application to prosumer impacts on power grids.

Chaos (Woodbury, N.Y.)·2023
Same author

Allergic Rhinitis.

Primary care·2023

Related Experiment Video

Updated: Feb 16, 2026

Live Cell Imaging during Mechanical Stretch
07:42

Live Cell Imaging during Mechanical Stretch

Published on: August 19, 2015

11.0K

Flexibility: Day of the Static Stretch.

Paul Schultz

    The Physician and Sportsmedicine
    |December 20, 2017
    PubMed
    Summary

    Athletes often remain inflexible despite stretching. Physicians should educate patients on the importance and methods of flexibility exercises to improve athletic performance and reduce injury risk.

    Area of Science:

    • Sports Medicine
    • Exercise Physiology

    Background:

    • Despite increased focus on stretching, many athletes exhibit persistent muscular tightness.
    • This lack of flexibility can impede performance and increase injury susceptibility.

    Purpose of the Study:

    • To highlight the ongoing issue of athlete inflexibility.
    • To emphasize the crucial role of physicians in educating athletes on flexibility exercises.

    Main Methods:

    • Physician-led patient education on flexibility principles.
    • Guidance on the rationale and practical application of stretching routines.

    Main Results:

    • Physicians can effectively address athlete tightness through targeted education.
    • Improved understanding of flexibility benefits and techniques can enhance athletic outcomes.

    More Related Videos

    A Novel Stretching Platform for Applications in Cell and Tissue Mechanobiology
    16:46

    A Novel Stretching Platform for Applications in Cell and Tissue Mechanobiology

    Published on: June 3, 2014

    12.3K
    Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity
    08:40

    Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity

    Published on: June 12, 2019

    7.9K

    Related Experiment Videos

    Last Updated: Feb 16, 2026

    Live Cell Imaging during Mechanical Stretch
    07:42

    Live Cell Imaging during Mechanical Stretch

    Published on: August 19, 2015

    11.0K
    A Novel Stretching Platform for Applications in Cell and Tissue Mechanobiology
    16:46

    A Novel Stretching Platform for Applications in Cell and Tissue Mechanobiology

    Published on: June 3, 2014

    12.3K
    Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity
    08:40

    Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity

    Published on: June 12, 2019

    7.9K

    Conclusions:

    • Physicians play a vital role in promoting athlete flexibility.
    • Comprehensive education on the 'why' and 'how' of flexibility exercises is essential for athletes.