Accession Number : ADA291500

Title :   Adaptations to Three Weeks of Aerobic/Anaerobic Training in West Coast U.S. Navy Sea-Air-Land Personnel (SEALS).

Descriptive Note : Final rept. Jun-Aug 91,

Corporate Author : NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA

Personal Author(s) : Jacobs, I. ; Prusaczyk, W. K. ; Goforth, H. W., Jr

PDF Url : ADA291500

Report Date : DEC 1994

Pagination or Media Count : 25

Abstract : SEALS must optimize physical training "efficiency" i.e., adaptation per unit training time. This study was designed to determine if a single training program could simultaneously elicit aerobic and anaerobic adaptations. SEALs were assigned to groups matched for initial aerobic and anaerobic fitness. Each group trained on cycle ergometers for 30 min 3 times per week as follows: continuous (CNT; n=8) at 70% VO sub 2peak; intermittent (TNT; n=6) at an average of 70% VO sub 2peak (10 x (2 min x 50% VO sub 2peak + 1 min x 110% V0 sub 2peak)); supramaximal (SMX; n=6) (3-5 x 30 sec maximal effort sprints spaced over 30 min). Before and after 3 weeks of training, measurement of time to exhaustion (TE), VO sub 2peak, and blood lactate concentration (LA) during submaximal exercise were used to assess aerobic fitness, and maximal O2 deficit to evaluate anaerobic capacity. After training, VO sub 2peak did not change significantly for any group. Mean TE increased (p<0.05) for all groups, averaging 18.1 to 19.3 min. LA at 180 w decreased (p<O.O5) for all groups, with pre to post changes of 3.3 to 2.1 mmol(dot)/L.. Maximal O2 deficit increased (p<O.OS) for TNT and SMX averaging 38 to 46 mLO2(dot)/kg, but did not increase (p>0.05) for CNT. There were no other significant differences across training groups for any training adaptations. The results indicate that TNT or SMX training can induce rapid improvements in both aerobic and anaerobic fitness using a single 30-min bout.

Descriptors :   *MILITARY PERSONNEL, *NAVAL WARFARE, *AEROBIC PROCESSES, *ANAEROBIC PROCESSES, *ENDURANCE(PHYSIOLOGY), TRAINING, CAPACITY(QUANTITY), PERFORMANCE(HUMAN), CYCLES, TIME, PHYSICAL FITNESS, TNT, CONCENTRATION(CHEMISTRY), BLOOD, LACTATES, ERGOMETERS.

Subject Categories : Personnel Management and Labor Relations
      Anatomy and Physiology
      Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE