Cardiovascular Oscillations in Coronary Patients With and Without Type 2 Diabetes

NCT02050399 | Completed DMC

• 1 other identifier: 13287613.0.0000.5504
• Study Type: interventional
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

Coronary artery disease (CAD) and diabetes mellitus (DM) may promote alterations in heart responses during exercise or postural maneuver. Thus, the purpose of this study is to observe the influence of different postures (supine, seated and standing) and different percentages (15, 30, 45 and 60%) of the maximum voluntary contraction (MVC) of handgrip in the responses of heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), cardiac output (CO), stroke volume (SV) and peripheral vascular resistance (PVR) in coronary patients with and without type 2 diabetes.

Conditions

Coronary Artery Disease; Diabetes Mellitus, Type 2

Keywords

Isometric Exercise; Arterial Pressure; Autonomic Nervous System; Cardiovascular system; Posture

Outcome Measures

Primary Outcomes (1)

• Cardiovascular responses during isometric exercise

  15 men with coronary artery disease and 15 healthy subjects will perform isometric contractions (handgrip) in different percentages (15,30, 45 60%) of maximum voluntary contraction (MVC) and in different postures (supine, seated and standing position). The percentages and postures will be randomized and the subjects will perform two contractions per day in a posture. All the variables will be evaluated through pulse plethysmograph (Finometer PRO, Finapress Medical System, The Netherlands). The subjects will be assessed in the protocol of isometric exercise for six days (two contractions per day and one posture). Initially they will remain at rest for 10 minutes and wiil perform the percentage drawn of maximal voluntary contraction until exhaustion. After 10 minutes of recovery subjects will perform another percentage of maximum contraction to exhaustion.

  Change in heart rate, systolic blood pressure, diastolic blood pressure, mean arterial pressure, cardiac output, stroke volume and peripheral resistance. [time frame: initial (10 min), during the time of contraction (peak) and after contraction (10 min)

Study Arms (3)

Healthy subjects

ACTIVE COMPARATOR

15 men, 45 and 65 years old. After initial evaluation, clinical exercise testing, cardiopulmonary exercise testing, carotid ultrasound, laboratory tests (biochemical blood) and isometric exercise protocol will be performed.

Other: Isometric exercise

Coronary disease with Type 2 Diabetes

EXPERIMENTAL

15 men, 45-65 years old, with coronary artery disease and type 2 diabetes will perform clinical exercise testing, cardiopulmonary exercise testing, carotid ultrasound, laboratory tests (biochemical blood), clinical autonomic tests and isometric exercise protocol will be performed.

Other: Isometric exercise

Coronary disease without Type 2 Diabetes

EXPERIMENTAL

15 men, 45-65 years old, with coronary artery disease will perform clinical exercise testing, cardiopulmonary exercise testing, carotid ultrasound, laboratory tests (biochemical blood) and isometric exercise will be performed.

Other: Isometric exercise

Interventions

Isometric exercise OTHER

The isometric protocol (handgrip) will be performed into 4 percentages of MVC (15, 30, 45 and 60%) to exhaustion in 3 postures (supine, seated and standing position). The percentages and the postures will be randomized. In the first day of exercise protocol the subjects will be at rest during 10 minutes and will perform 3 MVC during 5 seconds, with 5 minutes of recovery. The higher value of MVC will be used to prescribe the percentages. The subjects will perform two contractions until exhaustion in one posture in each day.

Coronary disease with Type 2 Diabetes; Coronary disease without Type 2 Diabetes; Healthy subjects

Eligibility Criteria

• Age: 45 Years - 65 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• coronary artery disease
• clinical diagnosis of type 2 diabetes
• free of type 2 diabetes to participate of control group and coronary disease without Type 2 Diabetes group
• nonsmokers
• not alcoholics

You may not qualify if:

• autonomic neuropathy
• clinical exercise testing with ECG alterations (ST-segment depression greater than 2 mm, ventricular and supraventricular arrhythmias, sustained or non-sustained supraventricular tachycardia, atrial tachycardia, atrial fibrillation and atrioventricular blocks) or symptom of angina induced by stress.
• Individuals with hypertension and diabetes mellitus not controlled.
• Subjects who did not complete all assessments.
• Subjects with temporal (R-Ri and pressure) series with noise preventing the evaluation

Sponsors & Collaborators

• Universidade Federal de Sao Carlos: lead

Study Sites (1)

Universidade Federal de São Carlos

São Carlos, São Paulo, 13565-905, Brazil

Location

Related Publications (6)

• Leite PH, Melo RC, Mello MF, Silva Ed, Borghi-Silva A, Catai AM. Heart rate responses during isometric exercises in patients undergoing a phase III cardiac rehabilitation program. Rev Bras Fisioter. 2010 Sep-Oct;14(5):383-9. English, Portuguese.

  PMID: 21180863 BACKGROUND

• Amaral JF, Mancini M, Novo Junior JM. Comparison of three hand dynamometers in relation to the accuracy and precision of the measurements. Rev Bras Fisioter. 2012 Jun;16(3):216-24. doi: 10.1590/s1413-35552012000300007.

  PMID: 22801514 BACKGROUND

• Legramante JM, Massaro M, Raimondi G, Castrucci F, Cassarino S, Peruzzi G, Iellamo F. Effect of postural changes on cardiovascular responses to static exercise in hypertensive human beings. J Hypertens. 1999 Jan;17(1):99-105. doi: 10.1097/00004872-199917010-00015.

  PMID: 10100100 BACKGROUND

• Porta A, Catai AM, Takahashi AC, Magagnin V, Bassani T, Tobaldini E, van de Borne P, Montano N. Causal relationships between heart period and systolic arterial pressure during graded head-up tilt. Am J Physiol Regul Integr Comp Physiol. 2011 Feb;300(2):R378-86. doi: 10.1152/ajpregu.00553.2010. Epub 2010 Oct 20.

  PMID: 20962207 BACKGROUND

• Krzeminski K, Cybulski G, Ziemba A, Nazar K. Cardiovascular and hormonal responses to static handgrip in young and older healthy men. Eur J Appl Physiol. 2012 Apr;112(4):1315-25. doi: 10.1007/s00421-011-2069-y. Epub 2011 Jul 28.

  PMID: 21796411 BACKGROUND

• Millar PJ, MacDonald MJ, McCartney N. Effects of isometric handgrip protocol on blood pressure and neurocardiac modulation. Int J Sports Med. 2011 Mar;32(3):174-80. doi: 10.1055/s-0030-1268473. Epub 2010 Dec 16.

  PMID: 21165806 BACKGROUND

MeSH Terms

Conditions

Coronary Artery Disease; Diabetes Mellitus, Type 2

Interventions

Exercise

Condition Hierarchy (Ancestors)

Coronary Disease; Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Arteriosclerosis; Arterial Occlusive Diseases; Vascular Diseases; Diabetes Mellitus; Glucose Metabolism Disorders; Metabolic Diseases; Nutritional and Metabolic Diseases; Endocrine System Diseases

Intervention Hierarchy (Ancestors)

Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Officials

• Aparecida Maria Catai

  Universidade Federal de Sao Carlos

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: OTHER
• Intervention Model: FACTORIAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Cardiovascular oscillations at rest and during isometric exercise in coronary patients with and without type 2 diabetes

Study Record Dates

• First Submitted: January 16, 2014
• First Posted: January 30, 2014
• Study Start: August 1, 2013
• Primary Completion: December 1, 2015
• Study Completion: March 1, 2016
• Last Updated: January 26, 2018

Record last verified: 2014-01

Locations

BR (1)