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Related Concept Videos

Fatigue01:21

Fatigue

Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
Muscle Recovery and Fatigue01:24

Muscle Recovery and Fatigue

Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective response...
Fatigue Strength of Concrete01:22

Fatigue Strength of Concrete

Fatigue, in the context of materials science and engineering, refers to the weakening or failure of a material caused by repeatedly applied loads, even if these loads are below the strength limit of the material. Fatigue strength in concrete is a critical property that influences its durability and longevity. Concrete can fail in two ways due to fatigue. Static fatigue or creep rupture occurs under a constant load or one that increases slowly. The other failure mode is due to cyclical or...

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Related Experiment Video

Updated: Jun 4, 2026

Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer
07:22

Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer

Published on: February 20, 2020

Investigation of fatigue.

B Berris, A Rachlis

    Canadian Family Physician Medecin De Famille Canadien
    |February 10, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Fatigue is common, but extensive tests aren't always needed. A thorough history and physical exam, with basic labs like urinalysis and complete blood count, often suffice for diagnosing fatigue.

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    Last Updated: Jun 4, 2026

    Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer
    07:22

    Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer

    Published on: February 20, 2020

    The Treadmill Fatigue Test: A Simple, High-throughput Assay of Fatigue-like Behavior for the Mouse
    09:25

    The Treadmill Fatigue Test: A Simple, High-throughput Assay of Fatigue-like Behavior for the Mouse

    Published on: May 31, 2016

    Evaluating the Role of Mitochondrial Function in Cancer-related Fatigue
    08:56

    Evaluating the Role of Mitochondrial Function in Cancer-related Fatigue

    Published on: May 17, 2018

    Area of Science:

    • Internal Medicine
    • Diagnostic Medicine

    Background:

    • Fatigue is a prevalent symptom encountered in clinical practice.
    • Identifying the underlying cause of fatigue is crucial for effective patient management.

    Purpose of the Study:

    • To outline an evidence-based approach for the diagnostic workup of fatigue.
    • To differentiate between organic and non-organic causes of fatigue.
    • To guide the extent of laboratory and radiological investigations.

    Main Methods:

    • Review of clinical guidelines and literature on fatigue diagnosis.
    • Emphasis on detailed patient history and physical examination.
    • Recommendations for stepwise laboratory and radiological investigations based on clinical findings.

    Main Results:

    • A significant proportion of fatigue cases (at least 50%) lack an identifiable organic cause.
    • Minimal investigations including urinalysis, complete blood count, smear, sedimentation rate, and chest X-ray are recommended initially.
    • Further investigations should be guided by the presence or absence of localizing symptoms and signs.

    Conclusions:

    • A focused diagnostic approach, prioritizing clinical assessment, can avoid unnecessary extensive testing for fatigue.
    • The diagnostic strategy for fatigue should be tailored to individual patient presentation, balancing thoroughness with resource efficiency.