Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Daily physical activity and ageing.

K R Westerterp1

  • 1Department of Human Biology, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands. K.Westerterp@HB.Unimaas.NL

Current Opinion in Clinical Nutrition and Metabolic Care
|November 21, 2000
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Changes in physical activity over the lifespan: impact on body composition and sarcopenic obesity.

Obesity reviews : an official journal of the International Association for the Study of Obesity·2018
Same author

Control of energy expenditure in humans.

European journal of clinical nutrition·2016
Same author

Heritability and genetic etiology of habitual physical activity: a twin study with objective measures.

Genes & nutrition·2014
Same author

Validating measures of free-living physical activity in overweight and obese subjects using an accelerometer.

International journal of obesity (2005)·2013
Same author

Daily physical activity assessment with accelerometers: new insights and validation studies.

Obesity reviews : an official journal of the International Association for the Study of Obesity·2013
Same author

Metabolic adaptations to over--and underfeeding--still a matter of debate?

European journal of clinical nutrition·2012
Same journal

Seeing cachexia clearly: the evolution of body composition and radiological biomarkers in cancer wasting.

Current opinion in clinical nutrition and metabolic care·2026
Same journal

The updated recommendations for medical nutrition in the perioperative period: a focus on early oral intake.

Current opinion in clinical nutrition and metabolic care·2026
Same journal

Pediatric and adolescent nutritional and metabolic assessment in the precision era.

Current opinion in clinical nutrition and metabolic care·2026
Same journal

Nutrition in cirrhosis: bridging guidelines and practice in hepatic disease.

Current opinion in clinical nutrition and metabolic care·2026
Same journal

Metabolic health in a changing world: widening the lens to climate, cities, and place.

Current opinion in clinical nutrition and metabolic care·2026
Same journal

Beyond the scale: a systems-level reframing of obesity and metabolic care.

Current opinion in clinical nutrition and metabolic care·2026
See all related articles

Aging increases physical activity variability. While exercise training doesn't prevent declines in physical activity or muscle mass, it improves muscle function, impacting disability and mortality risk.

Area of Science:

  • Gerontology
  • Exercise Physiology
  • Human Aging

Background:

  • Aging is characterized by increased variability in physiological features, indicating diverse rates of decline.
  • Physical activity is a potential modulator of the aging process, necessitating reliable measurement techniques.
  • Energy expenditure on physical activity significantly decreases with age, both proportionally and absolutely.

Purpose of the Study:

  • To investigate the relationship between habitual physical activity, exercise training, and age-related physiological changes.
  • To examine the impact of physical activity on muscle mass and function during aging.
  • To assess the role of physical inactivity in disability and mortality risk.

Main Methods:

  • Utilized doubly labeled water studies to quantify energy expenditure related to physical activity across the lifespan.

Related Experiment Videos

  • Compared the effects of habitual activity levels and structured exercise training on age-associated changes.
  • Evaluated muscle mass and function parameters, including fiber type, capillary density, and aerobic capacity.

    • Main Results:

    • Average proportion of daily energy expenditure for physical activity decreased from 35% at age 20 to 25% at age 90.
    • Absolute activity-induced energy expenditure reduced to one-third of its initial value over the same age interval.
    • Exercise training did not counteract the decline in non-training physical activity, but significantly improved muscle function (fiber type, capillary density, aerobic capacity).

    Conclusions:

    • Physical activity levels and energy expenditure decline significantly with age.
    • While exercise may not prevent muscle mass loss, it enhances muscle function, positively influencing health outcomes.
    • Physical inactivity is a major risk factor for disability and mortality; even recent activity increases offer benefits, though these are reversible.