Related Experiment Video
Updated: Jul 27, 2025
Measuring Respiratory Function in Mice Using Unrestrained Whole-body Plethysmography
Published on: August 12, 2014
The Effect of Body Armor on Pulmonary Function Using Plethysmography.
Dustin Dunnick1, Keoni Kins2, Dharini M Bhammar3
1Department of Kinesiology and Rehabilitation Science, Arkansas Tech University, Russellville, AR 72801, USA.
Wearing body armor, both loaded and unloaded, significantly reduces lung capacity and functional residual capacity in military athletes. This impacts breathing mechanics and may decrease endurance performance during strenuous activities.
Area of Science:
- Exercise Physiology
- Occupational Health
- Biomechanics
Background:
- Military tactical athletes perform demanding duties while wearing body armor.
- Previous research indicates decreased lung function with body armor, but comprehensive effects and loaded vs. unloaded conditions are unknown.
Purpose of the Study:
- To investigate the effects of loaded and unloaded body armor on pulmonary function in military tactical athletes.
Main Methods:
- Twelve college-aged males underwent spirometry and plethysmography under three conditions: control (athletic attire), unloaded plate carrier, and loaded plate carrier.
- Pulmonary function tests measured lung capacities and volumes.
Main Results:
- Both loaded and unloaded body armor significantly reduced functional residual capacity (14-17%).
- Loaded body armor significantly lowered forced vital capacity (6%), total lung capacity (6%), and maximal voluntary ventilation.
- Body armor imposes a restrictive effect on lung volumes.
Conclusions:
- Loaded body armor restricts total lung capacity, while both loaded and unloaded armor affect functional residual capacity.
- These pulmonary function changes can impact breathing mechanics and endurance performance, particularly during prolonged operations.
More Related Videos
06:57Effects of Surgical Masks on Cardiopulmonary Function in Healthy Subjects
Published on: February 12, 2021
08:30Intraperitoneal Glucose Tolerance Test, Measurement of Lung Function, and Fixation of the Lung to Study the Impact of Obesity and Impaired Metabolism on Pulmonary Outcomes
Published on: March 15, 2018
Related Concept Videos
01:25Pulmonary Function Tests
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
01:24Physical Assessment of the Respiratory Tract II: Palpation
Thoracic Palpation
Thoracic palpation detects tenderness, masses, lesions, respiratory excursions, and vocal fremitus. The nurse assesses...
01:19Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
01:24Pressure Relationships in Thoracic Cavity
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs...
01:31Respiratory System Abnormal Finding II: Palpation and Auscultation
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
01:27Physical Assessment of the Respiratory Tract II: Inspection
Chest Configuration
The chest configuration...