Subjects Evaluated With Low Cardiac Vagal Tone
Conditions
Brief summary
Purpose: to investigate the hypothetical additive value of a sudden rest-exercise training over the cardiac vagal of cardiac patients in a supervised exercise program.
Detailed description
Allocating in the admission for a supervised exercise program all subjects evaluated with low cardiac vagal tone (cardiac vagal index ≤ 1,30), it is expected that from a sample of almost 150 subjects (all over 18 years-old, ranging mostly from 40 to 50), we will compare 50 subjects that adhered to the supervised exercise program ( more than 65% of expected presence). Patients with pacemaker on unable to exercise in the bicycle will be excluded from the study, as well as those who does not adhere to at least more than 65% of the expected presence in the supervised exercise program. All the sample will be randomized to performed 8 weeks of a specific sudden rest-exercise training and after 8 weeks will discontinue the protocol, or will do the opposite ( 8 weeks of no specific protocol, followed by 8 weeks of specific sudden rest-exercise training). The cardiac vagal will be evaluated at every 8 weeks to measure the cardiac vagal index between both phases. During all the time, all clients will perform aerobic, strength and flexibility exercises as part of the supervised exercise program.
Interventions
Aerobic, strength and flexibility exercises in a supervised exercise program for 8 weeks; after 8 weeks will add a specific sudden rest-exercise training protocol, three times a week. The cardiac vagal index will be measured at every 8 weeks.
OTHERSupervised exercise program together with a specific sudden rest-exercise training protocol
Aerobic, strength and flexibility exercises in a supervised exercise program for 8 weeks together with a specific sudden rest-exercise training protocol, three times a week After 8 weeks will discontinue the specific sudden rest-exercise training protocol. The cardiac vagal index will be measured at every 8 weeks.
Sponsors
Clínica de Medicina do Exercício
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
SUPPORTIVE_CARE
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* cardiac vagal index ≤ 1,30
Exclusion criteria
* pacemaker * low adherence * cognitive/physical impairment
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Supervised exercise program and rest-exercise transition training to improve cardiac vagal tone | 16 weeks | Cardiac vagal tone after either 8 weeks of aerobic, strength and flexibility exercises alone or 8 weeks of aerobic, strength, flexibility exercises combined with specific sudden rest-exercise training |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Longitudinal effects of supervised exercise program and rest-exercise transition training to improve cardiac vagal tone | 1 year | Cardiac vagal tone measures at every 8 weeks after both phases (16 weeks of training / no training, depending of the randomization) during a year |
Outcome results
None listed