Prevention and/or maintaining cardiovascular health in the elderly.
Conditions
Interventions
The aim of this study was verify the cardiovascular healthy by the autonomic adaptations to 12 weeks of different training models, therefore before and post the training period the heart rate variabil
Other
E02.779.483.875
E02.779.483
Sponsors
Faculdade de Educação Física, Laboratório de Fisiologia do Exercício, Universidade Estadual de Campinas
Faculdade de Educação Física, Laboratório de Fisiologia do Exercício, Universidade Estadual de Campinas
Eligibility
Inclusion criteria
Inclusion criteria: Volunteers irregularly active or sedentary; both sexes; over 60 years old; non smokers.
Exclusion criteria
Exclusion criteria: Manifestation of ischemic myocardial disease; diabetes; arrhythmias; hypertension; use of medications for the mentioned diseases; joint limitations.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| It was expected that at least for the training that worked cardiorespiratory fitness had improved heart rate variability and hemodynamic variables as already described in the literature that the higher oxygen consumption greater variability in heart rate and low blood pressure. For the analysis of heart rate variability, the record of resting HR was performed using heart rate monitor (S810i - Polar® - Finland) to obtain the beat-to-beat records corresponding to the intervals between consecutive R waves of the electrocardiogram (iRR) in time (RMSSD and SDNN) and frequency domain (LF, HF e LF/HF) and to blood pressure measurement by auscultation, using a mercury column esfigmomanôometro (mmhg) (Narcosul, Brazil). The variables described above were evaluated before and after 12 weeks of the various proposed training (aerobic, high intensity strength, low-intensity strength with blood flow restriction, concurrent and concurrent with blood flow restriction) and control group to eliminate the factor time.;For statistical analysis, visual inspection techniques and the Shapiro-Wilk test for the presence of outliers and normality of the data. After we applied a mixed model having group (two levels) and time (two levels) as fixed factors and subjects as random factor for each dependent variable. In the event of significant F ratio values, we used a Tukey adjustment for multiple comparisons, and effect. The significance value was P <0.05 and the statistical package used was the SAS 9.3 for Windows. Despite our initial hypothesis the results showed no changes of variables after the intervention period. | — |
Secondary
| Measure | Time frame |
|---|---|
| Evaluations described below were used for calculation (pre-training), adjust (sixth training week) of training load and within the specificity of each type of training is expected to improve (after training) force (high-intensity strength training and with low blood flow restriction and concurrent training with and without blood flow restriction) and cardiorespiratory fitness (aerobic training and concurrent training with and without blood flow restriction). Peak oxygen uptake (VO2peak ml/kg/min) The participants performed a maximum graded exercise test on a treadmill (Quinton TM55, Bothell, Washington, EUA). Gas exchange data were collected continuously using an automated breath-by-breath metabolic system (CPX, Medical Graphics,St. Paul, Minnesota, USA). The protocol consisted of a 2-min warm-up at 4 km · h?1, followed by increases in increments of 0.3 km · h?1 every 30 s until exhaustion. A 1 % grade was used to reproduce athletic track conditions. The highest 30 s mean oxygen consumption value was defined as the peak oxygen consumption (VO2peak), as a VO2 plateau was not observed in any of the individuals. 3 experienced researchers detected the ventilatory threshold (VT) and respiratory compensation point (RCP) by standard visual analysis. Maximum dynamic strength test (1-RM) The procedures for the 45 ° leg press 1-RM test followed previously described criteria. In short, participants performed a general warm-up on a cycle ergometer at 20 km · h ? 1 for 5 min, followed by specific warm-up sets of 45 ° leg press exercise. In the first set, individuals performed 8 repetitions with a load corresponding to 50 % of their estimated 1-RM, obtained during the familiarization sessions. In the second set, they performed 3 repetitions at 70 % of their estimated 1RM. A 2-min interval was allowed between warm-up sets. After warming-up, the participants performed the leg-press 1-RM test protocol. First, they were seated in the machine and placed both feet in a self-sele | — |
Countries
Brazil
Contacts
Public ContactMara Patrícia Mikahil
Faculdade de Educação Física, Laboratório de Fisiologia do Exercício, Universidade Estadual de Campinas
Outcome results
None listed