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Related Concept Videos

Fatigue01:21

Fatigue

677
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...
677
Exercise Stress Test01:26

Exercise Stress Test

809
Introduction
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
809
Assessment of the Cardiovascular System I: Subjective Data01:23

Assessment of the Cardiovascular System I: Subjective Data

649
A thorough health history and physical assessment are essential for identifying cardiovascular disease (CVD) symptoms and distinguishing them from other health issues.
Initial Enquiry
Ask the patient about their primary concern and thoroughly explore all reported symptoms.
Medical History
Investigate past illnesses affecting the cardiovascular system, such as angina, anemia, rheumatic fever, congenital heart disease, stroke, thrombophlebitis, dysrhythmias, varicosities
Inquire about symptoms...
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Muscle Recovery and Fatigue01:24

Muscle Recovery and Fatigue

3.7K
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...
3.7K
Heart Failure VII: Nursing Interventions01:30

Heart Failure VII: Nursing Interventions

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The first step in nursing management of a patient with heart failure involves thoroughly assessing the patient's medical history.Subjective Data: Obtain the patient's medical history of coronary artery disease, hypertension, myocardial infarction, and symptoms like dyspnea, orthopnea, and paroxysmal nocturnal dyspnea.Objective Data: Conduct a physical examination to identify findings such as jugular vein distention, pulmonary crackles, tachycardia, murmurs, peripheral edema, and vital signs,...
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Related Experiment Video

Updated: Dec 9, 2025

The Treadmill Fatigue Test: A Simple, High-throughput Assay of Fatigue-like Behavior for the Mouse
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Short fatigue questionnaire: Screening for severe fatigue.

Adriaan Penson1, Sylvia van Deuren1, Margreet Worm-Smeitink2

  • 1Department of Hematology, Radboud University Medical Center, Nijmegen, The Netherlands.

Journal of Psychosomatic Research
|September 5, 2020
PubMed
Summary
This summary is machine-generated.

The 4-item Short Fatigue Questionnaire (SFQ) is a reliable and valid tool for screening severe fatigue. It offers excellent psychometric properties and a suggested cut-off score of 18 for clinical use.

Keywords:
Cut-off score.Psychometrics.Screening instrument.Severe fatigueShort fatigue questionnaire.

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Area of Science:

  • Psychometrics
  • Clinical Assessment
  • Fatigue Research

Background:

  • Fatigue is a common and debilitating symptom in numerous chronic conditions.
  • Accurate and efficient measurement of fatigue is crucial for diagnosis and management.
  • Existing fatigue questionnaires may require further validation or optimization for specific populations.

Purpose of the Study:

  • To evaluate the psychometric properties of the 4-item Short Fatigue Questionnaire (SFQ).
  • To establish a cut-off score for identifying severe fatigue using the SFQ.
  • To generate normative data for the SFQ across various chronic conditions and the general population.

Main Methods:

  • Utilized data from 2985 patients with chronic conditions and 2288 individuals from the general population.
  • Assessed internal consistency (Cronbach's alpha) and construct validity through correlations with established fatigue measures.
  • Employed Receiver Operating Characteristic (ROC) analysis to determine an optimal cut-off score for severe fatigue.

Main Results:

  • The SFQ demonstrated excellent internal consistency (Cronbach's alpha) across most groups studied.
  • Strong correlations were observed between the SFQ and other fatigue measures (r=0.76 with EORTC QLQ-C30, r=0.68 with digital diary).
  • ROC analysis identified a cut-off score of 18 with high sensitivity (0.984) and specificity (0.826) for severe fatigue, validated against the Checklist Individual Strength (CIS).

Conclusions:

  • The 4-item Short Fatigue Questionnaire (SFQ) is a psychometrically sound instrument.
  • The SFQ is a reliable and valid tool for screening severe fatigue in both clinical settings and research.
  • The identified cut-off score and normative data enhance the utility of the SFQ for practical application.