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

Cognitive Dissonance01:38

Cognitive Dissonance

38.0K
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
38.0K
Exercise and Muscle Performance01:27

Exercise and Muscle Performance

6.4K
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...
6.4K
Exercise Stress Test01:26

Exercise Stress Test

2.1K
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
2.1K
Stress: General Loading Conditions01:15

Stress: General Loading Conditions

721
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
721

You might also read

Related Articles

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

Sort by
Same author

Evaluating the efficacy of a personalised sub-symptomatic exercise treatment programme for rehabilitation of military service members with persistent symptoms following mild traumatic brain injury: a randomised controlled trial.

BMJ open sport & exercise medicine·2026
Same author

Injuries in Specialist Police Officers: A Scoping Review.

Journal of special operations medicine : a peer reviewed journal for SOF medical professionals·2025
Same author

MultiAgency, prospective, exploratory, non-intervention, cohort Study on Human Impact Exposure oNboard high-speed boats (MASHIEN): protocol.

BMJ open·2025
Same author

Using deep-learning based segmentation to enable spatial evaluation of knee osteoarthritis (SEKO) in rodent models.

Osteoarthritis and cartilage·2025
Same author

The impact of craft type on operational spine postures in military boat operators.

Journal of biomechanics·2025
Same author

A Workflow-Efficient Approach to Pre- and Post-Operative Assessment of Weight-Bearing Three-Dimensional Knee Kinematics.

The Journal of arthroplasty·2025
Same journal

A Scoping Review of Orexin Antagonists in Post-Traumatic Stress Disorder: Modulating Sleep, Stress, and Fear Circuits.

Military medicine·2026
Same journal

Human Performance Optimization in Special Operations Forces: Structure, Outcomes, and Readiness Implications.

Military medicine·2026
Same journal

Mindfulness in Military Medicine: A Mixed-Methods Analysis of Army Medical Specialist Corps Officers' Mindfulness Competency, Beliefs, and Tendencies.

Military medicine·2026
Same journal

Comorbidity of Nightmares in U.S. Military Personnel With Insomnia, Obstructive Sleep Apnea, or Co-Morbid Insomnia and Obstructive Sleep Apnea.

Military medicine·2026
Same journal

Artificial Intelligence Answering Femoroacetabular Impingement Patient Questions: Helpful Tool or Harmful Risk? Evaluating NIPRGPT Answers to Frequently Asked Questions About Femoroacetabular Impingement.

Military medicine·2026
Same journal

Operational Implementation of Prolonged Field Care Kits for Large-Scale Combat Operations.

Military medicine·2026
See all related articles

Related Experiment Video

Updated: Apr 16, 2026

Revised and Neuroimaging-Compatible Versions of the Dual Task Screen
07:52

Revised and Neuroimaging-Compatible Versions of the Dual Task Screen

Published on: October 5, 2020

4.1K

Changes in combat task performance under increasing loads in active duty marines.

Rebecca L Jaworski1, Andrew Jensen2, Brenda Niederberger2

  • 1Marine Expeditionary Rifle Squad, Marine Corps Systems Command, 2200 Lester Street, Quantico, VA 22134-6050.

Military Medicine
|March 10, 2015
PubMed
Summary
This summary is machine-generated.

Heavy loads significantly impair U.S. Marine Corps combat readiness. Increased body weight loads slow aerobic performance and reduce marksmanship accuracy, impacting mission effectiveness.

More Related Videos

Estimate the Cognitive Load Using Electrocardiographic Measure: A Human-AI Collaborative Task
07:08

Estimate the Cognitive Load Using Electrocardiographic Measure: A Human-AI Collaborative Task

Published on: December 5, 2025

1.1K
Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
12:29

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions

Published on: May 23, 2011

20.1K

Related Experiment Videos

Last Updated: Apr 16, 2026

Revised and Neuroimaging-Compatible Versions of the Dual Task Screen
07:52

Revised and Neuroimaging-Compatible Versions of the Dual Task Screen

Published on: October 5, 2020

4.1K
Estimate the Cognitive Load Using Electrocardiographic Measure: A Human-AI Collaborative Task
07:08

Estimate the Cognitive Load Using Electrocardiographic Measure: A Human-AI Collaborative Task

Published on: December 5, 2025

1.1K
Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
12:29

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions

Published on: May 23, 2011

20.1K

Area of Science:

  • Military Science
  • Human Performance
  • Physiology

Background:

  • U.S. Marines frequently operate under substantial physical loads during combat missions.
  • Existing data on the performance impact of these heavy loads on combat tasks is limited.

Purpose of the Study:

  • To investigate the effects of varying load carriage on the performance of combat-related tasks.
  • To quantify the relationship between load magnitude and task completion time and accuracy.

Main Methods:

  • Eighteen subjects completed a modified Maneuver Under Fire (MANUF) course, a component of the U.S. Marine Corps Combat Fitness Test.
  • Participants were subjected to four load conditions: no load, 15%, 30%, and 45% of body weight.
  • Marksmanship was assessed before and after the MANUF course under each load condition.

Main Results:

  • A significant positive correlation was observed between load carriage and the total time to complete the MANUF course (p<0.0001).
  • Marksmanship accuracy and precision significantly decreased from pre- to post-MANUF testing (p=0.005 and p<0.0001, respectively).
  • Loads of 45% body weight notably increased time to cover distance and diminished shooting precision.

Conclusions:

  • Increasing physical loads significantly degrade short-duration aerobic performance in combat scenarios.
  • Fatigue and load carriage collectively compromise marksmanship capabilities.
  • Carrying loads equivalent to 45% of body weight negatively impacts both mobility and shooting proficiency, suggesting a critical threshold for combat effectiveness.