Every phase of U. S. Navy Seal (USST) basic training, field training and special assignment training includes strength training, in conjunction with cardiovascular conditioning and swimming. The goal of Underwater Demolition Team (UDT) strength and conditioning programs is to enhance the physical abilities required to perform special operations and mission-related physical tasks.
Dynamic and Isokinetic
By definition, dynamic exercise is alternate contraction and expansion of muscles, causing partial or complete range of movement through a joint. This pertains to arm flex muscles, shoulder muscle groups and upper and lower leg muscles. Isokinetic strength training is associated with muscle and joint movement at a constant angular velocity, such as the arm stroke during freestyle and sidestroke swimming.
Endurance and Strength
Muscular endurance training improves the ability of a muscle or muscle group to contract at a medium force that is 50 or 60 percent of total capability over a period of time. This is associated with repetitive activities, such as maneuvering equipment and accessories. When muscular endurance training is combined with strength training, the UDT-SEAL team member develops the capability of effective activity through all phases of a mission.
Muscle Fibers
Type I and Type II muscle fibers are targeted in UDT-SEAL strength training programs. Type I muscle fibers are primarily aerobic and must be conditioned to work at a steady rate over extended periods of time. Developing Type I fibers is done through endurance weight training exercises.
Type II muscle fibers are needed for strength and power activities. These fibers tend to accumulate lactate, which ultimately leads to rapid fatigue if the lactate is not removed. Hauling equipment underwater and maneuvering manned submersibles requires both types of muscle fibers to be developed and in peak condition.
Tests
Each UDT-SEAL team member endures rigorous testing that’s designed to evaluate that member’s strength capabilities. Testing includes organizing weapons, explosives, equipment and accessories, as well as entry and exit of submersibles and flotation watercraft. Optimum test results would show each member is capable of handling any aspect of a mission, in the event one or more members are wounded or otherwise not able to perform their particular strength-related assignment.
Summary
Navy UDT-SEAL field exercises and missions include hauling and manipulating watercraft, weapons and gear. Performing these activities effectively is only possible through muscular strength training. In addition, field exercises and missions entail moving quickly and steadily over sections of ground or water. Performing this type of work effectively is only possible through muscular endurance training.
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