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Related Concept Videos

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.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
Skeletal Muscle Relaxants: Adverse Effects01:21

Skeletal Muscle Relaxants: Adverse Effects

Skeletal muscle relaxants are widely used for muscle paralysis and relieving pain following any muscle injury or stiffness. However, depending on the drug type, they can have adverse effects that range from mild to severe. Usually, nondepolarizing neuromuscular blockers have minimal side effects. For example, drugs like d-tubocurarine, cisatracurium, and rocuronium cause hypotension, whereas drugs like baclofen, when stopped abruptly, can lead to the recurrence of spastic conditions.
Unlike...
Overview of Protein Metabolism01:21

Overview of Protein Metabolism

Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.

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Related Experiment Video

Updated: May 27, 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

Bedrest and sarcopenia.

Robert H Coker1, Robert R Wolfe

  • 1Department of Geriatrics and the Center for Translational Research in Aging and Longevity, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA. CokerRobert@uams.edu

Current Opinion in Clinical Nutrition and Metabolic Care
|November 24, 2011
PubMed
Summary
This summary is machine-generated.

Sarcopenia, a condition common in the elderly, is worsened by bedrest. Essential amino acid supplementation may help mitigate the negative effects of hospitalization on muscle health in older adults.

Related Experiment Videos

Last Updated: May 27, 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

Area of Science:

  • Gerontology
  • Muscle Physiology
  • Nutritional Science

Background:

  • Aging presents challenges to health, exacerbated by obesity and sarcopenia.
  • Sarcopenia, characterized by neuromuscular and muscle protein synthesis alterations, increases elderly morbidity and mortality.
  • Unanticipated bedrest or hospitalization poses significant clinical challenges for the elderly, particularly those with sarcopenia.

Purpose of the Study:

  • To characterize the physiological elements of sarcopenia.
  • To describe the impact of bedrest on sarcopenia.
  • To review countermeasures for bedrest-induced deleterious effects in the elderly.

Main Methods:

  • Review of physiological elements of sarcopenia.
  • Analysis of bedrest impact on sarcopenia.
  • Evaluation of countermeasures against bedrest consequences.

Main Results:

  • Accelerated sarcopenia is a syndrome involving neuromuscular control and muscle protein synthesis alterations.
  • Bedrest-induced insulin resistance complicates muscle mass and function maintenance.
  • Nutritional strategies are crucial for managing muscle health during hospitalization.

Conclusions:

  • Essential amino acid supplementation shows promise in minimizing hospitalization's detrimental effects on the elderly.
  • Nutritional adjunctive therapy may reduce hospital stay duration and readmission rates.
  • Further research is needed for optimal clinical management of elderly individuals during unanticipated bedrest.