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

Classification of Skeletal Muscle Fibers01:48

Classification of Skeletal Muscle Fibers

57.1K
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
57.1K
Metabolic Rate01:25

Metabolic Rate

708
The human body is a powerhouse of energy, with every cell performing numerous functions that require energy. This energy production and consumption is measured by the metabolic rate, which quantifies the total heat generated by all the body's chemical reactions and mechanical work. This measurement helps to determine the rate of kilocalorie (kcal) consumption needed to fuel all ongoing activities.
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence...
708
Obesity01:24

Obesity

668
The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
668
Therapeutic Index01:13

Therapeutic Index

5.4K
The therapeutic index of a drug is a key parameter in pharmacology that quantifies the relative safety of a drug by calculating the ratio between the dose that causes toxicity in half the population (50%) to the dose that proves to be effective for half the population (50%). It provides a spectrum of doses for a particular drug ranging from effective to potentially toxic. To illustrate, consider an anticoagulant agent like warfarin. It possesses a narrow window within its therapeutic index to...
5.4K

You might also read

Related Articles

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

Sort by
Same author

Skin-cancer screening preferences and trust in clinicians among outdoor enthusiasts: preference for specialist-led checks.

PeerJ·2026
Same author

Skin cancer prevalence among outdoor activity participants from Queensland, Australia: aquatic <i>versus</i> land-based sun exposure.

PeerJ·2026
Same author

Optimized lentivirus-derived virus-like particles for efficient delivery of Cas9-based genome editors.

Nucleic acids research·2026
Same author

Quantifying Head Impacts in Elite Muay Thai: A Case Study Using Instrumented Mouthguards.

Sports (Basel, Switzerland)·2026
Same author

Phantom-based residual error correction using individualized system estimates (PRECISE) -pushing the boundaries of geometric fidelity in MRI.

Physics in medicine and biology·2026
Same author

The Validity of Bioelectrical Impedance Analysis Compared to a Four-Compartment Model in Healthy Adults: A Systematic Review.

Journal of functional morphology and kinesiology·2026

Related Experiment Video

Updated: Oct 2, 2025

Author Spotlight: Advancements in 3D Optical Imaging for Comprehensive Body Composition Assessment in Modern Research
06:48

Author Spotlight: Advancements in 3D Optical Imaging for Comprehensive Body Composition Assessment in Modern Research

Published on: June 7, 2024

1.5K

Tactical Masters Athletes: BMI Index Classifications.

Marc Keefer1, Joe Walsh2, Kent Adams3

  • 1Athletic Department, Central Washington University, Ellensburg, WA 98926, USA.

Sports (Basel, Switzerland)
|February 24, 2022
PubMed
Summary
This summary is machine-generated.

Aging US Marines, or Masters Tactical Athletes, show a similar healthy body mass index (BMI) to other Masters athletes. This study found their obesity prevalence was lower than the general US adult male population.

Keywords:
MarinesUSMCbody mass index

More Related Videos

Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

27.3K
Physical Activity Measurement in Children Accepting Table Tennis Training
06:51

Physical Activity Measurement in Children Accepting Table Tennis Training

Published on: July 27, 2022

2.1K

Related Experiment Videos

Last Updated: Oct 2, 2025

Author Spotlight: Advancements in 3D Optical Imaging for Comprehensive Body Composition Assessment in Modern Research
06:48

Author Spotlight: Advancements in 3D Optical Imaging for Comprehensive Body Composition Assessment in Modern Research

Published on: June 7, 2024

1.5K
Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

27.3K
Physical Activity Measurement in Children Accepting Table Tennis Training
06:51

Physical Activity Measurement in Children Accepting Table Tennis Training

Published on: July 27, 2022

2.1K

Area of Science:

  • Gerontology
  • Sports Medicine
  • Military Health

Background:

  • The relationship between aging, physical activity, and obesity is a key research area.
  • Masters athletes (MA) often exhibit a healthy body mass index (BMI) due to sport participation.
  • Active Duty military personnel can be considered tactical athletes, prompting investigation into their BMI relative to MA.

Purpose of the Study:

  • To compare the body mass index (BMI) and obesity prevalence of aging Active Duty military personnel (Masters Tactical Athletes) with other Masters athletes (MA).
  • To determine if Masters Tactical Athletes exhibit a similar BMI profile to established Masters athlete groups.

Main Methods:

  • Analysis of previously recorded data from 402 male, 46-50-year-old Active Duty Enlisted United States Marines.
  • Stratification of Marine participants' BMI into underweight, normal, overweight, and obese categories.
  • Comparison of obesity prevalence and average BMI between Marines and male North American MA from the 2009 Sydney World Masters Games, as well as US adult males (40-59 years).

Main Results:

  • The obesity prevalence among the Marines was significantly lower than US adult males and male softball MA (p < 0.001).
  • Marine obesity prevalence was similar to MA in football, track/field, swimming, and volleyball (p > 0.05).
  • Average Marine BMI (26.7 kg/m²) was similar to football, swimming, and volleyball MA, but higher than track/field and lower than softball MA.

Conclusions:

  • Masters Tactical Athletes, represented by aging US Marines, demonstrate a BMI profile comparable to other Masters athletes.
  • Despite all groups falling into the 'overweight' BMI category on average, the findings suggest a beneficial BMI associated with tactical athleticism similar to competitive Masters sports.