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Related Concept Videos

Longitudinal Research02:20

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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
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Longitudinal Cohort Study Investigating Fall Risk Across Diverse Muscle Health Statuses Among Older People in the

Yuan-Ping Chao1,2, Wen-Hui Fang1,2, Tao-Chun Peng1,2

  • 1Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital; and School of Medicine, National Defense Medical Center, Taipei, Taiwan.

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Older adults with dynapenia (impaired muscle function, preserved mass) face higher fall risks than those with sarcopenia. Prioritizing muscle function may prevent falls in this population.

Keywords:
dynapeniafallpossible sarcopenia

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Area of Science:

  • Gerontology
  • Musculoskeletal Health
  • Public Health

Background:

  • Falls are a major health concern for older adults, especially those with poor muscle health.
  • The distinct roles of muscle mass versus function in fall risk are not fully understood.
  • Previous research has yielded conflicting results due to varied definitions of muscle health.

Purpose of the Study:

  • To investigate the longitudinal risk of falls across different muscle health statuses in community-dwelling older adults.
  • To differentiate fall risk associated with dynapenia, presarcopenia, and sarcopenia.
  • To identify specific risk factors contributing to falls in older individuals with impaired muscle health.

Main Methods:

  • Longitudinal study of community-dwelling adults aged 65+ from 2015-2023.
  • Muscle health assessed via handgrip strength, walking speed, and appendicular skeletal muscle mass.
  • Dynapenia (impaired function, preserved mass), presarcopenia (reduced mass, preserved function), and sarcopenia (both impaired) were defined and compared to robust muscle health.

Main Results:

  • Dynapenia was associated with the highest fall incidence (27.15%).
  • Dynapenic individuals had a significantly higher adjusted fall risk (HR=2.10) compared to sarcopenic individuals (HR=1.31).
  • Female participants with dynapenia and multiple comorbidities (e.g., coronary artery disease, arthritis, sedative use) showed a markedly elevated fall risk (HR=2.82).

Conclusions:

  • Dynapenia, characterized by impaired muscle function, presents a greater fall risk in older adults than sarcopenia.
  • Specific risk factors, including female sex and certain comorbidities, amplify fall risk in dynapenic individuals.
  • Enhancing muscle function should be a key preventive strategy to reduce fall-related adverse outcomes in the elderly.