Biochemical Responses of Navy Special Warfare Personnel to Carbohydrate Loading and Physical Performance.
NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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Selected biochemistries were monitored in 9 Navy Special Warfare personnel during a program of carbohydrate loading LOAD, during a control, nonloading program NONLOAD, and during an endurance test subsequent to each program. Each program required 6 days with the endurance test on the 7th. The endurance test consisted of interrupted running 18 min. running2 min. rest to voluntary exhaustion on a treadmill at a speed requiring an energy expenditure of about 80 of maximal aerobic capacity. Fasting blood samples were collected each morning of the dietexercise programs, and samples were collected priot to, 60 min, into, at the end of, and 60 min. after each endurance test. All biochemical values were increased during the endurance tests except potassium. There appeared to be a slightly greater increase in muscle LDH and in CPK following LOAD. In no case did the enzyme values suggest major muscle or cardiovascular damage. HBD was elevated following LOAD, suggesting a lack of long-distance running training in the Special Warfare training program. This HBD elevation was taken to suggest a need to explore further the effects of endurance running in nondistance trained individuals.
- Stress Physiology