Health Sciences Program Student Theses, Dissertations and Capstones

Document Type

Dissertation - NSU Access Only

Degree Name

Doctor of Philosophy (PhD) in Health Science

Copyright Statement

All rights reserved. This publication is intended for use solely by faculty, students, and staff of Nova Southeastern University. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, now known or later developed, including but not limited to photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author or the publisher.

Department

College of Health Care Sciences – Health Science Department

First Advisor

Georgia Monique Mokha

Date of original Performance / Presentation

January 2023

Publication Date / Copyright Date

1-1-2023

Abstract

Background: Hypertension is a major risk factor associated with myocardial infarction, ischemic heart disease, stroke, and a variety of other health-related conditions. Resistance training programs produce chronic reductions in blood pressure. However, little is known about the impact of varied resistance training rest intervals on chronic reductions in blood pressure. Objective: The purpose of the dissertation study was to examine the effect of resistance training rest intervals on chronic changes of systolic blood pressure and diastolic blood pressure. Research Design and Methods: The design was a prospective randomized controlled study of normotensive young adults. The investigator randomized 27 normotensive young adults into one of three groups: (30-sec rest, 90-sec rest, and 150-sec rest). The investigator obtained baseline and posttest measurements of percent of body fat (using bioimpedance), strength (one-repetition maximum), oxygen saturation, and blood pressure on all participants. The intervention groups exercise variables included exercise sessions three times per week for a total of 8 weeks, three sets of 10 repetitions, and an intensity of 65% of one repetition maximum (1RM). Throughout the exercise program, the participants recorded their exercise sessions using a smartphone application. In addition, participants self-measured their blood pressure using a home blood pressure monitor and submitted weekly data to the investigator. Analysis: The investigator used SPSS Statistical Software V.26 to conduct a mixed model 3 x 2 ANOVA analysis and a dependent t-test analysis of the systolic and diastolic blood pressure measures. Additionally, the investigator conducted a change score calculation, and a one-way ANOVA analysis of the change scores for systolic and diastolic blood pressure, body fat percentage and oxygen saturation.

Disciplines

Medicine and Health Sciences

Keywords

blood pressure; hypertension; resistance training; rest interval

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