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Related Concept Videos

Exercise and Muscle Performance01:27

Exercise and Muscle Performance

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Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
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Overview of Protein Metabolism01:21

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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.
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Bone Disorders01:29

Bone Disorders

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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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The Effect of Aging on Tissues01:19

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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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...
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Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

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The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
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Nutrition and Exercise in Sarcopenia.

Stephen D Anton1,2, Azumi Hida1,3, Robert Mankowski1

  • 1Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States.

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Area of Science:

  • Gerontology
  • Nutritional Science
  • Exercise Physiology

Background:

  • Sarcopenia, the age-related loss of muscle mass and function, leads to frailty and disability.
  • Recent sarcopenia definitions include grip strength and body mass correction, expanding the at-risk population.
  • Understanding effective interventions for sarcopenia and frailty is crucial for maintaining older adult health.

Purpose of the Study:

  • To review existing literature on diet and exercise interventions for sarcopenia and frailty.
  • To identify effective strategies for improving lean mass and functional outcomes in older adults.
  • To highlight research gaps in targeting sarcopenic populations.

Main Methods:

  • Systematic literature review of 19 clinical trials.
  • Analysis of interventions focusing on diet, exercise, or combined approaches.
  • Evaluation of effects on lean mass, muscle strength, and functional measures.

Main Results:

  • Protein supplementation showed some benefits for functional and strength outcomes.
  • Exercise and combined interventions consistently improved lower body strength.
  • Effects on walking speed and grip strength were less consistent; calorie restriction was generally ineffective for body composition.

Conclusions:

  • Targeted interventions are needed for the growing population of older adults at risk of sarcopenia.
  • Protein supplementation and exercise show potential but require further investigation.
  • More research is essential to develop effective, specific interventions for sarcopenic individuals.