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Related Concept Videos

Cross-bridge Cycle01:26

Cross-bridge Cycle

As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
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Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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Cellular Adaptation I: Introduction and Atrophy01:23

Cellular Adaptation I: Introduction and Atrophy

Cells can adapt to environmental changes to maintain function and avoid injury, a process called cellular adaptation. Adapted cells exist in a reversible intermediate state with changes in size, number, phenotype, metabolism, or function. These responses help cells meet altered physiological or pathological demands; for example, enlargement of breast and uterine tissues during pregnancy. Early adaptations may enhance function, but persistent stress eventually causes tissue damage.Types of...
Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
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Overview of Protein Metabolism01:21

Overview of Protein Metabolism

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Related Experiment Video

Updated: Jun 12, 2026

The Creation of a Rat Model for Osteosarcopenia via Ovariectomy
03:52

The Creation of a Rat Model for Osteosarcopenia via Ovariectomy

Published on: February 21, 2025

Sarcopenia.

David R Thomas1

  • 1Division of Geriatric Medicine, Saint Louis University Medical Center, Saint Louis University School of Medicine, 1402 South Grand Boulevard, M28, St Louis, MO 63104, USA. thomasdr@slu.edu

Clinics in Geriatric Medicine
|May 26, 2010
PubMed
Summary
This summary is machine-generated.

Sarcopenia, characterized by muscle loss and functional decline in aging, is best treated with resistance exercise. Other interventions like hormone therapy and nutrition show limited effectiveness for this age-related condition.

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Segmentation and Linear Measurement for Body Composition Analysis using Slice-O-Matic and Horos
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Segmentation and Linear Measurement for Body Composition Analysis using Slice-O-Matic and Horos

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Last Updated: Jun 12, 2026

The Creation of a Rat Model for Osteosarcopenia via Ovariectomy
03:52

The Creation of a Rat Model for Osteosarcopenia via Ovariectomy

Published on: February 21, 2025

Segmentation and Linear Measurement for Body Composition Analysis using Slice-O-Matic and Horos
13:35

Segmentation and Linear Measurement for Body Composition Analysis using Slice-O-Matic and Horos

Published on: March 21, 2021

Area of Science:

  • Gerontology
  • Muscle Physiology
  • Aging Research

Background:

  • Sarcopenia definition is evolving, focusing on lean muscle mass loss and functional impairment.
  • Accurate classification is crucial for effective therapeutic approaches in older adults.
  • Sarcopenia is specifically age-related muscle decline, excluding inflammation-driven loss.

Purpose of the Study:

  • To review the current understanding and therapeutic strategies for sarcopenia.
  • To evaluate the efficacy of different interventions for age-related muscle loss.

Main Methods:

  • Literature review of sarcopenia definition and clinical relevance.
  • Analysis of therapeutic interventions including exercise, hormonal therapy, and nutrition.

Main Results:

  • Resistance exercise is the primary effective intervention, improving muscle mass and strength even in the very old.
  • Hormone replacement therapies (testosterone, growth hormone) show modest or limited benefits.
  • Nutritional therapy presents potential but has demonstrated small effects in clinical trials.

Conclusions:

  • Resistance exercise is the cornerstone treatment for sarcopenia.
  • Current hormonal and nutritional interventions require further research for significant clinical impact.
  • Effective management of sarcopenia relies on accurate diagnosis and targeted interventions, primarily exercise.