Related Experiment Video
Updated: Apr 7, 2026

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
Published on: January 28, 2020
Block-Periodized Training Improves Physiological and Tactically Relevant Performance in Naval Special Warfare
John P Abt1, Jonathan M Oliver, Takashi Nagai
11College of Health Sciences, University of Kentucky, Lexington, Kentucky; 2Department of Kinesiology, Texas Christian University, Fort Worth, Texas; 3Neuromuscular Research Laboratory, Warrior Human Performance Research Center, Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, Pennsylvania; 4Department of the Navy, Naval Special Warfare, Virginia Beach, Virginia; and 5College of Health Sciences, University of Kentucky, Lexington, Kentucky.
A 12-week block-periodized training program improved physical readiness and reduced body fat in Naval Special Warfare (NSW) Operators more effectively than a nonlinear program. This approach supports tactical training without overload.
Area of Science:
- Sports Science
- Human Performance
- Military Training
Background:
- Physical readiness and injury prevention are critical for Naval Special Warfare (NSW) Operators.
- Optimizing training programs is essential to enhance operator capabilities and mitigate musculoskeletal injuries.
Purpose of the Study:
- To evaluate the effectiveness of two distinct training programs on physical, physiological, and performance characteristics in NSW Operators.
- To compare a 12-week block-periodized program against a nonlinear periodized program during a training evolution.
Main Methods:
- Eighty-five NSW Operators were divided into an experimental (block-periodized) and a control (nonlinear) group.
- Pretesting and posttesting assessed body composition, aerobic capacity, muscular strength, flexibility, landing biomechanics, postural stability, and tactical performance.
- Training interventions were integrated into the operators' existing training evolution over 12 weeks.
Main Results:
- The experimental group showed significant reductions in body fat, fat mass, and body mass compared to the control group.
- Both groups improved aerobic capacity, but the experimental group demonstrated greater improvements in shoulder and ankle flexibility, landing strategies, balance, agility, and overall muscular strength.
- The control group experienced reductions in shoulder, knee, and ankle flexibility.
Conclusions:
- A population-specific, block-periodized training program effectively enhances physical readiness and performance in NSW Operators.
- This structured, progressive training approach can be implemented concurrently with tactical training without causing overload.
- Block periodization appears superior to nonlinear periodization for improving key physical attributes relevant to NSW operations.
More Related Videos
08:27A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
06:20Author Spotlight: Development of an Automated Camera-Based System for Real-Time Blast Overpressure Monitoring and TBI Risk Assessment in Military Training
Published on: December 6, 2024
Related Concept Videos
Exercise and Muscle Performance
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...
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...
Exercise and Cardiovascular Response
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...