Efeitos de 24 Semanas de Treinamento Resistido Sobre Índices da Aptidão Aeróbia de Mulheres Idosas Effects of 24 Weeks of Resistance Training on Aerobic Fitness Indexes of Older Women

ABSTRACT Introduction and objectives: Peak oxygen uptake (VO 2 peak) and anaerobic threshold (AT) have been widely accepted as important predictors of aerobic fitness. Traditionally, aerobic training is viewed as the main way to increase these indices. Conversely, resistance training (RT) is not typically prescribed for this purpose. In elderly subjects, it has been suggested that RT may increase aerobic capacity; however, the literature is controversial. The purpose of the present study was to verify the effects of 24 weeks of RT on aerobic capacity indexes of elderly women. Methods: Fifty elderly women voluntarily took part in this study and were divided into two possible groups: control group (CG - n=25; mean age of 68.00 ± 6.38 years) and training group (TG - n=25; mean age of 68.04 ± 6.78 years). All volunteers underwent cardiopulmonary exercise test on treadmill until volitional exhaustion before and after the intervention period. A split plot ANOVA test was used to examine differences within and between groups. Results: It was observed that the TG exhibited significant increase in the variables time of test and oxygen uptake for both AT and exhaustion moments. The CG did not show any significant alterations for any of the dependent variables. Conclusions: It can be concluded that 24 weeks of RT are capable of promoting improvement in performance during a cardiopulmonary exercise test in a sample of elderly women. Further studies are necessary to elucidate the mechanisms responsible for these adaptations.Keywords: aging, aerobic capacity, strength training, sarcopenia.