Efeitos do treinamento de força na modulação autonômica cardiovascular em idosas com comprometimento cognitivo leve

Abstract

Introduction: With aging, it is common for changes to occur in different areas of cognition. Cognitive functioning worsens in conditions of autonomic and cardiovascular dysfunction. Regular physical activity, however, has been described as an excellent means of mitigating the degenerations caused by aging within the physical, psychological domains and social. Objective: To evaluate the effects of strength training on cardiovascular autonomic modulation in elderly people with mild cognitive impairment. Materials and Methods: 32 women aged 60 years and over were divided into two groups: control (GC) and strength training (GTF), who were not included in some type of regular physical training for at least three months, in which anthropometric estimates, body composition, maximum strength, analysis of heart rate variability, blood pressure, heart rate was performed. Strength training consisted of 8 weeks, 3 sessions per week lasting 60 minutes each. Results: Strength training promoted a reduction in SBP pressure levels (post GTF: 107.25±11.76 vs post GC: 126.50±9.35; vs pre GTF: 123.81±12.34), DBP (post GTF: 68.75±7.71 vs post GC: 81.56±4.34; vs pre GTF: 75.00±6.64), PAM (post GTF: 81.58±8.04 vs post GC: 95.81± 3.34; vs pre GTF: 91.27±6.71), SD (post GTF: 7714±1212 vs post GC: 9231.19±1577.43; vs. pre GTF 9233±1280), regarding the MMSE, an increase was observed in the following variables: orientation (post GTF: 10 (10.0-10.0) vs post GC: 9 (8.0 - 9.5) ; vs. pre 10 (9.0- 9.5) 10.0), attention and calculation (post GTF: 2.5 (2.0- 4.0) vs post GC: 2 (0.0-2.5); vs. pre 2 (1.0-3. 0), evocation (post GTF: 3 (2.0-3.0) vs post GC: 2 (1.0-3.0); vs. pre 2 (1.5-2.5) and overall score of MMSE (post GTF: 26.31±1.53 vs post GC: 22.87 ±3.40; vs. pre 24.12 ±2.20 GTF). In the HRV variables, there was an increase in RMSSD (post GTF:27.49±11.59 vs post GC: 18.63±8.88; vs. pre18.76±7.72) and in HF (nu) (post GTF: 63.93±14.07 vs post GC: 42.06±18.88; vs. pre 46.09±15.44) and a decrease in LH (nu) (post GTF: 37.82±15 .21 vs. post GC: 53.22±12.68; vs. pre 49.44±16.54).Conclusion: After eight weeks of RT at moderate intensity, there was an improvement in cardiac autonomic modulation, hemodynamic parameters, as well as in MMSE scores in elderly women with MCI.