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Related Concept Videos

Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
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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.
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Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
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Associations Between Demographic Factors and Muscle-Strengthening Activity Participation Among Individuals With

Willie Leung1, Gillian Tiralla2, Lu Shi3

  • 1The University of Tampa.

Research Quarterly for Exercise and Sport
|March 18, 2026
PubMed
Summary

Most adults with disabilities do not engage in muscle-strengthening activities (MSA) or meet guidelines. Demographic factors are associated with MSA participation, similar to the general population.

Keywords:
Disabilityphysical activityphysical activity guidelinesstrength trainingweight liftingweight training

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Area of Science:

  • Public Health
  • Exercise Science
  • Disability Studies

Background:

  • Muscle-strengthening activity (MSA) is crucial for health.
  • Understanding MSA participation among individuals with disabilities is important for targeted interventions.
  • Existing research shows disparities in physical activity among this population.

Purpose of the Study:

  • To investigate the association between muscle-strengthening activity (MSA) participation and demographic characteristics in U.S. adults with disabilities.
  • To determine the prevalence of MSA engagement and adherence to guidelines within this demographic.
  • To identify demographic factors influencing MSA participation.

Main Methods:

  • Utilized data from the 2017-2019 Behavioral Risk Factor Surveillance System (BRFSS) for a nationally representative sample of U.S. adults with disabilities.
  • Self-reported weekly MSA was used to classify engagement and guideline adherence (≥2 times/week).
  • Survey-weighted quasi-Poisson and logistic regression models analyzed MSA frequency, engagement, and guideline adherence in relation to demographic variables (age, sex, race, BMI, marital status, education, employment, income).

Main Results:

  • The average weekly MSA frequency was 1.26 times among 184,720 participants with disabilities.
  • A significant majority did not engage in any MSA (63.32%) or meet guidelines (73.15%).
  • All examined demographic characteristics were significantly associated with MSA participation, albeit with modest effect sizes (p < .05).

Conclusions:

  • A substantial proportion of adults with disabilities do not participate in recommended muscle-strengthening activities.
  • Demographic factors are linked to MSA participation in individuals with disabilities, mirroring trends in the general population.
  • Further research and targeted public health initiatives are needed to promote MSA in adults with disabilities.