Hypertension Clinical Trial
— PEHOfficial title:
Impact of L-citrulline Associated With L-arginine Supplementation on the Post-exercise Hypotension in Normotensives and Hypertensives
Post-exercise hypotension (PEH) is a established phenomenon as one of the non-pharmacological ways of reducing blood pressure, producing important impacts, particularly in hypertensive individuals. However, the factors involved in the magnitude and duration of this effect are relatively little studied. Thus, the bioavailability of vasodilatation mediators may maximize the duration and magnitude of PEH. In this sense, the objective of the present project will be to verify the impact of L-citrulline associated with L-arginine supplementation on the acute blood pressure response after an aerobic exercise session. Approximately 80 adults (40 normotensive and 40 hypertensive) will be selected. The sample will be submitted to measurements of body mass, height and resting blood pressure. After the minimum interval of 48 h, subjects will be randomly submitted to four experimental situations (exercise/L-citrulline, exercise/L-arginine, exercise/placebo, exercise/L-citrulline + L-arginine). The exercise sessions (40 min in treadmill at 60% of FCres) will be performed with a minimum interval of 48 h. After each session, the blood pressure of the sample will be recorded during 24 hours. For data analysis, blood pressure values will be plotted in average of the wakefulness and average of the sleep periods and average of the 24 hours. The comparisons will be made through the ANOVA (repeated measures), following the recommended assumptions. It is hoped that the results of this project will collaborate to the knowledge regarding non-pharmacological models aimed at the prevention and treatment of hypertension in normotensive and hypertensive patients.
Status | Recruiting |
Enrollment | 20 |
Est. completion date | February 28, 2018 |
Est. primary completion date | January 31, 2018 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | N/A and older |
Eligibility |
Inclusion Criteria: - Hypertensive and Normotensive, without osteoarticular disabilities and medical authorization to physical exercise practice. |
Country | Name | City | State |
---|---|---|---|
Brazil | Juliano Casonatto | Londrina | Parana |
Lead Sponsor | Collaborator |
---|---|
Juliano Casonatto |
Brazil,
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Heart rate variability: standards of measurement, physiological interpretation and clinical use. Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Circulation. 1996 Mar 1;93(5):1043-65. — View Citation
Pickering TG, Hall JE, Appel LJ, Falkner BE, Graves J, Hill MN, Jones DW, Kurtz T, Sheps SG, Roccella EJ; Subcommittee of Professional and Public Education of the American Heart Association Council on High Blood Pressure Research. Recommendations for blood pressure measurement in humans and experimental animals: Part 1: blood pressure measurement in humans: a statement for professionals from the Subcommittee of Professional and Public Education of the American Heart Association Council on High Blood Pressure Research. Hypertension. 2005 Jan;45(1):142-61. Epub 2004 Dec 20. — View Citation
Quintana DS, Heathers JA, Kemp AH. On the validity of using the Polar RS800 heart rate monitor for heart rate variability research. Eur J Appl Physiol. 2012 Dec;112(12):4179-80. doi: 10.1007/s00421-012-2453-2. Epub 2012 Jul 13. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Ambulatorial Blood Pressure Monitoring | The ambulatorial blood pressure measurements will be taken with oscillometric device (Dyna-MAPA - São Paulo, Brazil) attached on the left arm. The participants will received instructions to keep the arm stand during the measures. The monitor will be setting to register the systolic and diastolic blood pressure and heart rate every 20 minutes during "daytime" (08:00am to 11:00pm) and every 30 minutes during "night-time" (11:00pm to 08:00am) to reduce sleep disturbs. The device screen will be electronically blinded to avoid feedback. The metric measures will be reported by millimeters of mercury (mmHg). | 24 hours |
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