Adaptations to Three Weeks of Aerobic/Anaerobic Training in West Coast U.S. Navy Sea-Air-Land Personnel (SEALS).
Final rept. Jun-Aug 91,
NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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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 n8 at 70 VO sub 2peak intermittent TNT n6 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 n6 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 p0.05 for all groups, averaging 18.1 to 19.3 min. LA at 180 w decreased pO.O5 for all groups, with pre to post changes of 3.3 to 2.1 mmoldotL.. Maximal O2 deficit increased pO.OS for TNT and SMX averaging 38 to 46 mLO2dotkg, but did not increase p0.05 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.
- Personnel Management and Labor Relations
- Anatomy and Physiology
- Stress Physiology