The Navy SEAL Physical Fitness Guide 197
For larger platforms or forward operating bases with physical
security limitations, the following equipment in addition to weights should also be
considered:
" Climbers
" Cycle ergometer
" Rowing machine
" Stair climber
" Treadmill
" Ski machine
" Upper arm ergometer
Physical fitness equipment on a submarine
should, at a minimum, include a cycle
ergometer, a rowing machine and free weights.
The stationary cycle and rowing machines should have a performance monitor to
display time, distance, etc., so that progress on stationary equipment can be charted and
monitored. Platoons deployed under confined circumstances can reduce the monotony of
stationary equipment and boost training morale by creating competitions. Monitoring and
charting each members daily PT progress will help demonstrate results, encourage physical
training, and maintain physical fitness.
Deconditioning
When a person is unable to maintain his exercise program, for whatever reason,
detraining or deconditioning occurs rapidly. Numerous studies have investigated the effect
of detraining on cardiorespiratory fitness, and significant reductions in work capacity has
been noted within two weeks. A 25% decrease in maximal oxygen uptake has been reported
after three weeks, which is equivalent to a 1% decline in physiologic function for each day
of inactivity. In addition, the proportion and size of the Type II fibers have been shown to
decrease with detraining. In contrast, maximal muscle strength appears to be more resilient
to periods of inactivity. A reduction in maximal capacity only means that it
will be harder for you to do a given task than prior to deconditioning. You
will still be able to do the work. Remember:
The benefits of training are