Physical Activity Aboard Nuclear Submarines as Measured by Pedometry
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
Pagination or Media Count:
Activity levels of 44 submarines were monitored before and during a fleet ballistic missile submarine patrol. These levels were determined by use of a pedometer worn on the hip. Readings were obtained daily and recorded in a log as miles walked. Through extensive preliminary testing it was determined that the miles unit was useless, due to variability in the sensitivity of the pedometer pendulum movements and the inability to determine a meaningful stride length . Results for any combination of pedometeruser were, however, repeatable. For lack of a better term, results are reported in miles per day and are as follows Control 2.11 or - 0.32 and Underway 1.01 or - 0.27 P. 05 Student T. This reduction of more than 50 in activity level may in part be responsible for the physical deconditioning observed during the course of a 40- 70 day submergence period. Keywords Physical activity Submarine medicine Pedometry.
- Submarine Engineering
- Human Factors Engineering and Man Machine Systems