The association between bouts of moderate to vigorous physical activity and patterns of sedentary behavior with frailty.
Exp Gerontol
; 104: 28-34, 2018 04.
Article
em En
| MEDLINE
| ID: mdl-29421349
ABSTRACT
OBJECTIVES:
To determine if bouts of moderate-vigorous physical activity (MVPA) and patterns of sedentary behavior are associated with frailty.METHOD:
Accelerometry from community-dwelling adults ≥50â¯years old (nâ¯=â¯2317) enrolled in the 2003-04 and 2005-06 National Health and Nutrition Examination Survey were used. Bouted (≥10â¯min) and sporadic (<10â¯min) durations of MVPA were analyzed based on meeting 0%, 1-49%, 50-99%, and ≥100% of physical activity guidelines (150â¯min/week of MVPA). Prolonged sedentary behavior were bouts lasting ≥30â¯min. Breaks from sedentary behavior were defined as any ≥1â¯min interruption in sedentary behavior. Average intensity (counts/min) and duration (minutes) during breaks were also analyzed. Frailty was measured with a 46-item frailty index.RESULTS:
Multivariable linear regression models adjusting for age, sex, education, ethnicity, income, marital status, smoking, alcohol consumption, body mass index, total sedentary time and accelerometer wear time indicated that meeting any percentage of the activity guidelines with bouted and sporadic MVPA was associated with reduced frailty. This relationship peaked at meeting 50-99% of guidelines and was associated with a 1.5 and 2.0 point reduction in the frailty index for bouted and sporadic MVPA, respectively. Two additional prolonged sedentary behavior bouts/day were associated with an additional frailty index deficit while every additional 100â¯cpm in average break intensity and every 2â¯min in average break duration were associated with one less deficit. Total sedentary breaks were not associated with frailty.CONCLUSION:
These population-level data give justification for determining if interventions which target short bouts of MVPA and interrupting prolonged, uninterrupted time spent in sedentary behaviors can treat or prevent frailty worsening.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Exercício Físico
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Comportamento Sedentário
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Fragilidade
Tipo de estudo:
Guideline
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Observational_studies
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Prevalence_studies
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Prognostic_studies
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Qualitative_research
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Risk_factors_studies
Limite:
Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Exp Gerontol
Ano de publicação:
2018
Tipo de documento:
Article