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Updated: Aug 14, 2026
08:27
A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
Changes in fitness and shipboard task performance following circuit weight training programs featuring continuous or
Summary
Circuit weight training with interval running (CWT/IR) significantly improved upper body strength and muscular endurance more than continuous running (CWT/CR) in Navy men. Both training programs enhanced shipboard task performance.
Area of Science:
- Exercise Physiology
- Sports Science
- Naval Fitness
Background:
- Physical fitness is crucial for naval personnel to perform demanding shipboard tasks.
- Evaluating the effectiveness of different circuit weight training and running protocols is essential for optimizing naval training programs.
Purpose of the Study:
- To compare the physiological and shipboard task performance effects of circuit weight training combined with continuous running (CWT/CR) versus interval running (CWT/IR) in Navy men.
Main Methods:
- 57 Navy men (mean age 19.5) were assigned to either CWT/CR or CWT/IR programs.
- Pre- and post-training assessments included dynamic strength (1 RM), power, muscular endurance, stamina, and simulated shipboard tasks.
- Performance metrics encompassed upper and lower body strength, arm ergometer power, sit-ups, time to exhaustion, and task completion times.
Main Results:
- Both CWT/CR and CWT/IR significantly enhanced performance on the manikin shoulder drag and most fitness measures.
- The CWT/IR group showed significantly higher improvements in shoulder press, arm ergometer power, and sit-ups compared to CWT/CR.
- The CWT/IR group also demonstrated significantly lower leg press muscular endurance values post-training.
Conclusions:
- Circuit weight training combined with interval running appears more effective than continuous running for improving specific aspects of strength and muscular endurance in young Navy men.
- Both training regimens positively impact functional shipboard task performance, highlighting the benefits of integrated training.
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