Related Experiment Video
Updated: Nov 22, 2025

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
Interference Phenomenon with Concurrent Strength and High-Intensity Interval Training-Based Aerobic Training: An
Felipe C Vechin1,2, Miguel S Conceição3, Guilherme D Telles3
1School of Physical Education and Sport, University of Sao Paulo, Av. Prof. Mello Moraes, 65, Cidade Universitária, Sao Paulo, SP, 05508-030, Brazil. felipevechin@usp.br.
Concurrent training (CT) combining high-intensity interval training (HIIT) with resistance training (RT) can minimize the interference effect on muscle gains. Very intense HIIT protocols like resisted sprint training (RST) and sprint interval training (SIT) are recommended for CT.
Area of Science:
- Exercise Physiology
- Sports Science
- Muscle Physiology
Background:
- Concurrent training (CT) may hinder resistance training (RT) adaptations (interference effect).
- A 2000 model proposed interference with high-intensity interval training (HIIT) and RT.
- Limited data existed on other HIIT protocols and interference.
Purpose of the Study:
- To update the theoretical model of the interference phenomenon in CT.
- To analyze the impact of various HIIT protocols on RT-induced adaptations.
- To provide recommendations for optimizing CT protocols.
Main Methods:
- Review and synthesis of current HIIT-based CT literature.
- Analysis of HIIT nomenclature and framework.
- Theoretical modeling of the interference effect.
Main Results:
- Very intense HIIT protocols (resisted sprint training [RST], sprint interval training [SIT]) minimize interference with muscle strength and mass.
- HIIT performed before RT without rest may cause interference, particularly in shorter protocols.
Conclusions:
- Implement very intensive HIIT protocols (RST, SIT) in CT to avoid the interference effect.
- Careful sequencing and rest periods are crucial when combining HIIT and RT.
- Updated model suggests specific HIIT types are compatible with RT adaptations.
More Related Videos
07:40Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
Published on: October 10, 2019
06:28A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats
Published on: April 28, 2023
Related Concept Videos
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Exercise and Muscle Performance
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Muscle Stimulation Frequency
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Factors Influencing Heart Rate
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...