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Related Concept Videos

The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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...
Aging01:26

Aging

Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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...
The Functions of the Skeletal System01:22

The Functions of the Skeletal System

The most apparent functions of the skeletal system are support, protection, and movement. However, bone tissue also performs several other critical metabolic functions. For one, the bone matrix acts as a reservoir for a number of minerals important to the functioning of the body, especially calcium and phosphorus. These minerals, present in the bone tissue, can be released back into the bloodstream when required. Calcium ions, for example, are essential for muscle contractions and controlling...
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.
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Related Experiment Video

Updated: Jun 5, 2026

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
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Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

Oxidative stress and skeletal muscle dysfunction with aging.

Wataru Aoi1, Kunihiro Sakuma

  • 1Laboratory of Health Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan. waoi@kpu.ac.jp

Current Aging Science
|January 18, 2011
PubMed
Summary

Aging increases muscle oxidative stress, damaging tissues and causing muscle dysfunction. Regular exercise and antioxidants can counteract this, improving muscle health.

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Last Updated: Jun 5, 2026

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
12:59

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

Ratiometric Biosensors that Measure Mitochondrial Redox State and ATP in Living Yeast Cells
12:22

Ratiometric Biosensors that Measure Mitochondrial Redox State and ATP in Living Yeast Cells

Published on: July 22, 2013

Area of Science:

  • Muscle physiology
  • Aging research
  • Oxidative stress biology

Background:

  • With aging, muscle tissues experience increased reactive oxygen species production, leading to elevated oxidative stress.
  • Oxidative stress damages cellular components like lipids, proteins, and DNA within muscle.
  • This cellular damage impacts muscle energy metabolism, protein degradation, and apoptosis, contributing to age-related muscle dysfunction.

Purpose of the Study:

  • To describe the influence of oxidative stress on age-related muscle dysfunction.
  • To review countermeasures for mitigating oxidative stress in aging muscle.

Main Methods:

  • Review of scientific literature on aging, oxidative stress, and muscle physiology.
  • Analysis of the effects of oxidative stress on cellular processes in muscle.
  • Evaluation of exercise and nutritional interventions as countermeasures.

Main Results:

  • Oxidative stress significantly contributes to the loss of muscle mass and metabolic dysfunction associated with aging.
  • Evidence suggests oxidative stress affects muscle function through transcriptional and post-translational regulation of key proteins.
  • Regular exercise and antioxidant-rich nutrition can reduce oxidative stress and improve muscle function.

Conclusions:

  • Oxidative stress is a key factor in age-related muscle dysfunction.
  • Exercise and proper nutrition are effective strategies to combat muscle aging by reducing oxidative stress.