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

Exercise and Cardiovascular Response01:20

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 Output01:17

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...
Exercise and Muscle Performance01:27

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...
Cardiopulmonary Resuscitation I: Adult01:21

Cardiopulmonary Resuscitation I: Adult

Cardiopulmonary resuscitation, or CPR, is a life-saving emergency procedure performed when a person's heart has stopped beating or they are no longer breathing. The foundation of CPR is Basic Life Support (BLS), which focuses on the early recognition of cardiac arrest, the immediate start of high-quality chest compressions, and the timely use of an automated external defibrillator (AED).Assessing Responsiveness and Checking the Carotid PulseWhen approaching an unresponsive person, first ensure...
Cardiopulmonary Resuscitation III: AED Use01:23

Cardiopulmonary Resuscitation III: AED Use

Introduction to AEDAn Automated External Defibrillator (AED) is a portable medical device that analyzes the heart's rhythm and, if necessary, delivers an electrical shock to help the heart re-establish an effective rhythm during sudden cardiac arrest (SCA). SCA occurs when the heart suddenly and unexpectedly stops beating, leading to a loss of blood flow to the brain and other vital organs. In such emergencies, time is of the essence, and using an AED, combined with Cardiopulmonary...
Exercise Stress Test01:26

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

You might also read

Related Articles

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

Sort by
Same author

Public Safety Heroes (PUSH) Workout: Task-Specific High-Intensity Functional Training for Emergency Readiness in Fire and Police-Proof of Concept.

Journal of functional morphology and kinesiology·2026
Same author

DIY LoCo-Baby: a ultra-low-cost infant CPR manikin for universal training access.

Resuscitation plus·2026
Same author

"I Don't Speak English Well." Do Language Barriers Affect Automated External Defibrillator Use? A Randomized Simulation Study With Spanish-Speaking Laypeople.

Simulation in healthcare : journal of the Society for Simulation in Healthcare·2025
Same author

Prehospital Defibrillation Challenges in Victims Wearing Wetsuits: A Pilot Comparison of AED Pad Placement Strategies.

Journal of clinical medicine·2025
Same author

Is It Necessary to Add the Feedback Insufflation Time in Manikins? A Simulation Pilot Study.

Reports (MDPI)·2025
Same author

A Comparative Evaluation of the Quality and Feasibility of 'Over-the-Head' Cardiopulmonary Resuscitation by a Single Rescuer: Pocket Mask vs. Bag-Valve Mask-A Pilot Study.

Healthcare (Basel, Switzerland)·2025
Same journal

Developmental Differences in Morphological Predictors of Power, Change-of-Direction Speed, and Reactive Agility in Youth Male Basketball Players.

Journal of functional morphology and kinesiology·2026
Same journal

Body Composition Profile of World-Class Male Water Polo Players in Relation to Position.

Journal of functional morphology and kinesiology·2026
Same journal

Assessment of Internal Load and External Load in Senior Football Players: Differences Between Competitive Levels.

Journal of functional morphology and kinesiology·2026
Same journal

Lateral Femoral Neck and Peritrochanteric Fractures: Anatomical Classifications and Pre-Operative Reduction Techniques-A Narrative Review.

Journal of functional morphology and kinesiology·2026
Same journal

How Much Is Enough: A Randomized Non-Inferiority Trial Comparing Three Bodyweight Training Protocols.

Journal of functional morphology and kinesiology·2026
Same journal

Biological Augmentation of Reamed Intramedullary Nailing for Aseptic Tibial Shaft Nonunion: An Exploratory Multicenter Retrospective Comparative Cohort Study.

Journal of functional morphology and kinesiology·2026
See all related articles

Related Experiment Video

Updated: Jun 26, 2026

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches
10:34

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

Published on: October 18, 2024

'Guard' Workout: Can a Lifeguard-Specific High-Intensity Functional Training Reflect Rescue Demands?

Isaac Ignacio-Rodríguez1, Silvia Aranda-García2, Marcos Sanmartín-Montes1

  • 1REMOSS Research Group, Faculty of Education and Sport Sciences, Universidade de Vigo, 36005 Pontevedra, Spain.

Journal of Functional Morphology and Kinesiology
|June 25, 2026
PubMed
Summary
This summary is machine-generated.

High-Intensity Functional Training (HIFT) can enhance lifeguard preparedness for aquatic rescues. This pilot study found that lifeguards maintained high CPR quality during a HIFT protocol, suggesting its utility for training and fitness assessment.

Keywords:
HIFTcardiopulmonary resuscitationdrowning preventionfitnesslifeguardwater rescue

More Related Videos

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
09:24

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers

Published on: January 28, 2020

Related Experiment Videos

Last Updated: Jun 26, 2026

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches
10:34

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

Published on: October 18, 2024

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
09:24

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers

Published on: January 28, 2020

Area of Science:

  • Sports Science and Physiology
  • Aquatic Safety and Lifeguarding
  • High-Intensity Functional Training (HIFT)

Background:

  • Rapid and safe aquatic rescues demand high physical fitness in lifeguards.
  • High-Intensity Functional Training (HIFT), exemplified by CrossFit®, is a popular training modality.
  • Integrating HIFT into lifeguard training may enhance preparedness for rescue operations.

Purpose of the Study:

  • To analyze the external and internal physiological loads of a lifeguard-specific HIFT protocol.
  • To assess the utility of HIFT as both a training method and a fitness evaluation tool for lifeguards.
  • To examine the impact of HIFT on cardiopulmonary resuscitation (CPR) quality under fatigue.

Main Methods:

  • Twenty-seven lifeguards participated in a 15-minute High-Intensity Functional Training (HIFT) protocol using an As Many Rounds As Possible (AMRAP) format.
  • The protocol included four stations: running, swimming with a tow, victim extraction, and cardiopulmonary resuscitation (CPR).
  • Measured variables included heart rate, blood lactate, perceived exertion, CPR quality, and time/rounds completed.

Main Results:

  • Lifeguards completed an average of three rounds, indicating sustained submaximal effort with high perceived exertion and significant physiological stress (AvgHR 82% MaxHR, lactate 15.50 mmol/L).
  • Despite accumulated fatigue, cardiopulmonary resuscitation (CPR) quality remained high (86-94%) throughout the protocol.
  • The HIFT protocol demonstrated feasibility for physically active lifeguards, generating controlled high-intensity effort without compromising critical rescue skills.

Conclusions:

  • A lifeguard-specific HIFT program structured as an AMRAP appears feasible for high-intensity training and assessing fitness in rescue-specific conditions.
  • Preliminary findings suggest HIFT can be utilized to enhance lifeguard preparedness for aquatic rescues while maintaining essential skills like CPR.
  • Further validation studies are recommended before widespread implementation of HIFT protocols for lifeguard training and assessment.