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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...
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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...
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Bioavailability Study Design: Healthy Subjects Versus Patients

Bioavailability studies are essential for evaluating a drug's therapeutic efficacy and understanding its absorption patterns under various physiological conditions. Conducting such studies on target patient populations provides more relevant data by simulating real-world disease states. However, practical challenges often necessitate the use of young, healthy adult volunteers as study subjects.Patients may exhibit altered drug absorption patterns due to the effects of the disease itself,...

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Related Experiment Video

Updated: May 16, 2026

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

Hypericum for fatigue - a pilot study.

C Stevinson1, M Dixon, E Ernst

  • 1Department of Complementary Medicine, School of Postgraduate Medicine and Health Sciences, University of Exeter, Exeter, UK.

Phytomedicine : International Journal of Phytotherapy and Phytopharmacology
|December 1, 2012
PubMed
Summary

This pilot study suggests Hypericum perforatum may effectively reduce unexplained fatigue. Further randomized controlled trials are needed to confirm these findings for fatigue treatment.

Related Experiment Videos

Last Updated: May 16, 2026

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

Area of Science:

  • Integrative Medicine
  • Phytotherapy
  • Clinical Psychology

Background:

  • Fatigue is a prevalent medical complaint lacking definitive treatments.
  • Hypericum perforatum (St. John's Wort) shows efficacy in reducing fatigue in depressed individuals.
  • Unexplained fatigue warrants investigation for novel therapeutic interventions.

Purpose of the Study:

  • To explore the potential of Hypericum perforatum as a remedy for unexplained fatigue.
  • To gather preliminary data for a future randomized controlled trial.
  • To assess the impact of Hypericum on fatigue, depression, and anxiety symptoms.

Main Methods:

  • An open-label, uncontrolled pilot study.
  • Twenty patients with unexplained fatigue received Hypericum extract (3x1 tablet daily) for six weeks.
  • Fatigue, depression, and anxiety were assessed using baseline and follow-up measures.

Main Results:

  • Significant reduction in perceived fatigue after two weeks, with further decrease at six weeks.
  • Concurrent reduction in symptoms of depression and anxiety observed.
  • Baseline data indicated potential depression in nearly half the participants, possibly linked to fatigue.

Conclusions:

  • Hypericum perforatum demonstrates potential in alleviating unexplained fatigue.
  • Results support the need for a randomized placebo-controlled trial to validate Hypericum's specific effects on fatigue.
  • Future study designs should consider the comorbidity of depression in fatigue management.