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Influence of the day period in which exercise training is performed on cardiovascular function and sleep patterns in hypertensive subjects

Time of day influence on cardiovascular and sleep adaptations promoted by aerobic training in hypertensives

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-7q7pz7
Enrollment
Unknown
Registered
2016-12-06
Start date
2015-03-01
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertension

Interventions

All of the subjects will be randomly divided in 4 group: Experimental group 1: Morning training – 16 hypertensive men will perform 10 week of aerobic training (cycle ergometer, 3x/w, duration progress
Other
F01.145.632

Sponsors

Escola de Educação Física e Esporte da Universidade de São Paulo
Lead Sponsor
Laboratóio de Rins e Hormônios da Escola Paulista de Medicina da Universidade Federal de São Paulo
Collaborator
Laboratório de Neurobiologia do Instituto de Ciências Biomédicas da Universidade de São Paulo
Collaborator

Eligibility

Sex/Gender
Male
Age
30 Years to 65 Years

Inclusion criteria

Inclusion criteria: men; aged between 30 and 65 years; hypertensives receiving anti-hypertensive drugs for 4 or more months; neither receiving beta-blockers nor non-dihydropyridine calcium channel blockers; neither chronotype type; inactive or insufficiently active; available to participate in the interventions at both proposed times of day (morning and evening).

Exclusion criteria

Exclusion criteria: Presence of cardiovascular diseases beyond hypertesion; presence of osteomioarticular problems that unavaiable to pratice exercise; systolic and diastolic blood pressures higher than 160 and 105 mmHg, respectively; obesity level 2 or above; presence of diabetes with complications or receiving insulin; presence of organ-target damage; presence of complex arrhythmias and/or ischemia during exercise.

Design outcomes

Primary

MeasureTime frame
Blood pressure decrease verified by auscultatory technique with a minimal reduction of 4 mmHg between initial and after assessments.

Secondary

MeasureTime frame
Sleep quality increase assessed by Pittsburgh Sleep Quality Index and Epworth Scale with a minimal reduction of 0,47 e 1,20 respectively between the beginning and end of the study; heart rate decrease assessed by electrocardiogram with a minimal reduction of 4 bpm between the beginning and end of the study; systemic vascular resistance decrease based on calculus considering cardiac output assessed by CO2 rebreathing technique with a minimal reduction of 7% between the beginning and end of the study; stroke volume increase calculated by quotient between cardiac output and heart rate with a minimal increase of 15% between the beginning and end of the study; improve of cardiac and vasomotor autonomic modulation verified by the increase of heart rate modulation and decrease of blood pressure modulation assessed by spectral analysis technique; plasmatic angiotensin II decrease assessed by technique of HPLC with a minimal decrease of 0,04 nmol/ml between the beginning and end of the study; plasmatic angiotensin 1-7 increase assessed by technique of HPLC with a minimal decrease of 0,05 nmol/ml between the beginning and end of the study; plasmatic vasopressin increase assessed by technique of HPLC with a minimal decrease of 0,11 nmol/ml between the beginning and end of the study; urinary 6-sulfatoxymelatonin increase assessed by technique of ELISA with a minimal increase of 6,5% between the beginning and end of the study.

Countries

Brazil

Contacts

Public ContactClaudia Forjaz

Escola de Educação Física e Esporte da Universidade de São Paulo

cforjaz@usp.br+55(11)3091-3136

Outcome results

None listed

Source: REBEC (via WHO ICTRP)