Abstract

High-resistance, low-repetition weight training has little effect on cardiorespiratory fitness. CWT programs, on the other hand, can be designed to elicit moderate increases (5) in aerobic capacity. CWT generally consists of two or three circuits of ten exercises designed so that the total workout timeis between 25 and 30 minutes. These circuits generally consist of 10 to 15 repetitions per set at approximately 50 of maximum strength per exercise and 15 to 30 seconds rest between sets. Energy cost studies indicate that heart rate and V02 intensities during CWT are at minimum threshold levels for improving cardiorespiratory fitness. CWT should not be considered an adequate aerobic program, but should include supplemental aerobic activity for optimal development of cardiorespiratory fitness. Aerobic training programs such as running will result in greater improvement in aerobic capacity (15 to 25) compared with CWT due to the higher intensity and number of kcal expended during running. CWT however, could help maintain cardiorespiratory fitness during convalescence from muscle soreness or injury incurred during running or other activities. Verf.-Referat (gekuerzt)