Health, Exercise, and Sports Sciences ETDs

Publication Date

Spring 3-28-2024

Abstract

The purpose of this study was to compare the acute physiological and perceptual responses to rest intervals during high-intensity functional training (HIFT) using a “rounds for time” (RFT) and an “every minute on the minute” (EMOM) design. Two studies were conducted in twelve trained and nine untrained individuals who performed two HIFT trials (EMOM and RFT). Blood lactate, oxygen consumption, heart rate, and rating of perceived exertion were significantly higher for the RFT compared to the EMOM. There was no difference between the EMOM and RFT for muscle damage responses. Lastly, there was no difference between the EMOM and RFT for physical activity enjoyment; however, exercise self-efficacy was higher for the EMOM. In conclusion, the RFT induced greater metabolic and cardiovascular stress compared to the EMOM. Both the EMOM and RFT may be considered enjoyable and effective designs to address the current physical activity guidelines.

Keywords

high-intensity functional training, cardiorespiratory fitness, muscular fitness, CrossFit, resistance exercise, aerobic exercise

Document Type

Dissertation

Language

English

Degree Name

Physical Education, Sports and Exercise Science

Level of Degree

Doctoral

Department Name

Health, Exercise, and Sports Sciences

First Committee Member (Chair)

Fabiano Amorim

Second Committee Member

Ann Gibson

Third Committee Member

Leonard Kravitz

Fourth Committee Member

Gabriella Bellissimo

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