The Navy SEAL Physical Fitness Guide - Uniformed Services ...

Acclimation to AltitudeProlonged exposure to altitude will bring about several physiologic changes andresult in improved exercise tolerance at submaximal effort levels. At levels above 10,000feet (3,050 meters), maximal aerobic capacity is limited and is lower than what would bemeasured at sea level. Below 10,000 feet, maximal aerobic capacity may approach sea levelvalues, but usually only after a 2 week acclimation period. Because of this inability toachieve maximal aerobic capacity above 10,000 feet, elite endurance athletes mayexperience mild to moderate aerobic deconditioning with extended stays at altitude.Training in ConfinedSpacesDuring deployments or extended training exercises it is not uncommon to beconfronted with conditions which may limit physical training routines. Complete cessationof physical training will result in a significant and rapid reduction in both strength andendurance capacity (see section on Deconditioning). Submarines and small assault craftprobably create the greatest challenge, but under almost all circumstances where time is nota limiting factor a reasonably well balanced training program can be maintained with aminimal amount of equipment. The following is a list of both aerobic and anaerobictraining modalities for confined spaces:" Calisthenics." Pull-ups and dips." Grip balls for grip strength." Resistance equipment such as the Exergenie which imitate swimming strokesand are very light weight." Therabands, another lightweight resistance tool to maintain strength in majormuscle groups." Jump rope." Stair stepping (monotonous but good aerobic workout without need of specialequipment)." Plyoball." Free weights." Running in place.196 Training for Specific Environments