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Exercise and Muscle Performance

Exercise and Muscle Performance

Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
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...

Exercise and Cardiovascular Response

Exercise and Cardiovascular Response

Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
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...

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Related Experiment Video

Updated: Jun 23, 2026

A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats

A 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

Transcriptomic responses to endurance exercise training in rats.

Conrad Oakes¹, Lior Pachter^2,3

¹Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA.

BMC Genomic Data

|June 21, 2026

Summary

This summary is machine-generated.

Researchers mapped exercise

Keywords:

Exercise Isoforms Transcriptomics

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Last Updated: Jun 23, 2026

A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats

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Published on: August 14, 2014

Versatility of Protocols for Resistance Training and Assessment Using Static and Dynamic Ladders in Animal Models

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Published on: December 17, 2021

Area of Science:

Exercise science
Molecular biology
Genomics

Background:

Understanding exercise's molecular impact is crucial for human health and performance.
The Molecular Transducers of Physical Activity Consortium (MoTrPAC) generated extensive molecular data from exercise studies.
Rattus norvegicus (rat) models provide valuable insights into exercise physiology.

Purpose of the Study:

To create a comprehensive molecular map of endurance exercise effects across multiple tissues.
To investigate the predictive power of gene expression for exercise intensity.
To explore exercise-induced changes at the isoform level and identify potential viral influences.

Main Methods:

Analysis of RNA-sequencing data from 19 different tissues in Rattus norvegicus.
Gene expression profiling to assess temporal effects of endurance exercise.
Bioinformatic analysis to detect isoform-level changes and potential viral sequences.

Main Results:

Gene expression patterns accurately predicted the training volume in rats.
Exercise-induced isoform-level expression differences were identified, which were not apparent in gene-level analysis.
A potential novel virus was detected, possibly affecting physiological measurements.

Conclusions:

Comprehensive molecular mapping enhances understanding of exercise's physiological effects.
Isoform-level analysis provides deeper biological insights than gene-level analysis.
Further investigation into exercise-associated viral infections is warranted.