Effects Of Community-based Exercise Training And Detraining On Hemodynamic Variables In Older Women: Role Of Intensity And Modality

Abstract

Regular exercise is associated with a reduced risk of developing chronic diseases and improved physical capacity. However, to our knowledge, the effects of modality, intensity and consequences of detraining have not yet been investigated in the elderly population. We sought to evaluate and compare the effect of modality and intensity (moderate intensity continuous aerobic training - MICT, high intensity interval aerobic training - HIIT, resistance training - RT, or combined - MICT + RT and HIIT + RT) of a training program. on the behavior of hemodynamic and functional variables of elderly women after 12 weeks of training and 16 weeks after their interruption. PURPOSE: To verify the effect of exercise modality and intensity on the hemodynamic variables of the elderly. METHODS: 69 elderly women (69.19 ± 7.89 years) were randomized into MICT (n = 29), RT (n = 15), MICT + RT (n = 12), and HIIT + RT (n = 13). Participants performed physical exercises twice a week during 60 minutes. The variables investigated were blood pressure (BP), heart rate (HR), abdominal circumference (AC) at pre, after 12 weeks of intervention, and after 16 weeks of training interruption (detraining). RESULTS: Diastolic blood pressure decreased in HIIT + RT between pre and untrained (p <0.01) and in RT between post and untrained (p <0.02). There was a significant increase in HR between post and detraining MICT (p <0.02) and a decrease in MICT + RT between pre and post training (p <000), with no significant difference in detraining. AC decreased in HIIT + RT between pre and post (p <0.01), in RT between pre and detraining (p <0.009) and post and detraining (p <0.00). There was an increase in post and detraining WC for MICT (p <0.05) and MICT + RT (p <0.03). CONCLUSION: Isolated or combined aerobic training can be effective in reducing blood pressure levels. Resistance training was also effective for reducing abdominal fat levels.Table 1.: Blood pressure, heart rate and abdominal circumference during follow-up