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Related Concept Videos

Exercise and Muscle Performance01:27

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 Response01:20

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...
Clearance Models: Physiological Models01:09

Clearance Models: Physiological Models

Drug clearance is a critical pharmacokinetic process involving the irreversible removal of drugs from the body through various organs over a specified time period. Physiological models are indispensable in determining organ-specific clearance, defined by the proportion of the drug eliminated per unit of time from the organ's blood volume.
The organ's clearance rate depends on the blood flow to the organ and the extraction ratio (E). The extraction ratio describes the organ's proficiency in drug...
Mechanistic Models: Overview of Compartment Models01:21

Mechanistic Models: Overview of Compartment Models

Mechanistic models, a category encompassing both physiological and compartmental modeling, differ from empirical models' approaches to incorporating known factors about the systems being modeled. Empirical models describe data with minimal assumptions, while mechanistic models aim to provide a robust description of available data by specifying assumptions and integrating known factors about the system. Compartmental analysis is a key example of a mechanistic model in pharmacokinetics and...
Model Approaches for Pharmacokinetic Data: Physiological Models01:15

Model Approaches for Pharmacokinetic Data: Physiological Models

Physiological models in pharmacokinetics are instrumental in understanding the distribution and elimination of drugs within the body. These models describe the drug concentration within target organs, influenced by factors such as drug uptake, tissue volume, and blood flow. Drug uptake is governed by the partition coefficient, which signifies the drug concentration ratio in tissue to that in the blood. The blood flow rate to a specific tissue is expressed as Qt, and the rate of change in tissue...
Pharmacokinetic Models: Comparison and Selection Criterion01:26

Pharmacokinetic Models: Comparison and Selection Criterion

Physiological and compartmental models are valuable tools used in studying biological systems. These models rely on differential equations to maintain mass balance within the system, ensuring an accurate representation of the dynamic processes at play.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.

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Related Experiment Video

Updated: Jul 26, 2026

Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
07:26

Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans

Published on: October 17, 2018

Exercise physiology in the 1990's: mechanistically defining the exercise model.

P F Gardiner

    Canadian Journal of Applied Sport Sciences. Journal Canadien Des Sciences Appliquees Au Sport
    |March 1, 1986
    PubMed
    Summary

    Sport researchers should prioritize a mechanistic approach to define exercise models, focusing on neuromuscular control to advance human performance knowledge and practical applications in exercise programming.

    Area of Science:

    • Sports Science
    • Exercise Physiology
    • Biomechanics

    Background:

    • Current understanding of exercise is largely phenomenological.
    • A mechanistic approach is needed to advance knowledge beyond observational data.
    • The theory versus practice debate hinders scientific progress.

    Purpose of the Study:

    • To advocate for a mechanistic approach in defining exercise models.
    • To identify key components limiting human performance within the neuromuscular system.
    • To emphasize the need for systematic study of neuromuscular adaptations to exercise.

    Main Methods:

    • Focus on the neuromuscular control of movement.
    • Investigate limiting factors in muscle, motoneurone, and supraspinal systems.

    More Related Videos

    Versatility of Protocols for Resistance Training and Assessment Using Static and Dynamic Ladders in Animal Models
    08:31

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

    Published on: December 17, 2021

    A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats
    06:28

    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

    Related Experiment Videos

    Last Updated: Jul 26, 2026

    Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
    07:26

    Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans

    Published on: October 17, 2018

    Versatility of Protocols for Resistance Training and Assessment Using Static and Dynamic Ladders in Animal Models
    08:31

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

    Published on: December 17, 2021

    A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats
    06:28

    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

  • Utilize "simple" experimental models for precise cause-effect definition.

    • Main Results:

    • Human performance limitations may reside in muscle, motoneurone, or supraspinal factors.
    • Mechanistic definition could lead to reclassification of exercise types.
    • New evidence highlights the need to study neuromuscular adaptations systematically.

    Conclusions:

    • A mechanistic approach is crucial for understanding exercise and human performance.
    • This approach will inform exercise program design and effectiveness evaluation for diverse populations.
    • Bridging the gap between specialization and practical application requires awareness and education.