FEAR OF FALLING INTERACTS WITH ACTN3 GENOTYPE TO PREDICT FAST GAIT SPEED IN OLDER ADULTS

FEAR OF FALLING INTERACTS WITH ACTN3 GENOTYPE TO PREDICT FAST GAIT SPEED IN OLDER ADULTS

Deficits in walking speed are associated with poor health outcomes in older adults. The alpha-actinin-3 gene (ACTN3) harbors the R577X polymorphism, which influences muscle function and physical performance in older adults. Fear of falling (FOF) is associated with gait, mobility and physical perform...

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Veröffentlicht in:Innovation in aging 2024-12, Vol.8 (Supplement_1), p.868-869
Hauptverfasser: Goldberg, Allon, Burkhardt, Summer, Norris, Hayden, Garber, Johnathon, Little, Natalie, Kendall, Jaiden, Sucic, Joseph
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container_issue Supplement_1
container_start_page 868
container_title Innovation in aging
container_volume 8
creator Goldberg, Allon
Burkhardt, Summer
Norris, Hayden
Garber, Johnathon
Little, Natalie
Kendall, Jaiden
Sucic, Joseph
description Deficits in walking speed are associated with poor health outcomes in older adults. The alpha-actinin-3 gene (ACTN3) harbors the R577X polymorphism, which influences muscle function and physical performance in older adults. Fear of falling (FOF) is associated with gait, mobility and physical performance deficits in older adults. Our objective was to determine if effects of FOF on fast gait speed (FGS) are associated with ACTN3 genotype, to identify individuals based on ACTN3 genotype at risk for greatest declines in FGS with onset of FOF. Older adults (N=168, female=61.3%, mean age 72.8 years, range 65-85 years) attended a study visit at which demographic, self-rated health (SRH) and FOF information was collected, and 10-meter FGS was tested. Saliva was obtained for ACTN3 genotyping. Multiple regression evaluated variance in FGS explained by FOF, RR genotype (present/absent), and interaction of FOF with RR genotype, controlling for age, sex and SRH. The final regression model explained 36.9% of FGS variance (p
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title FEAR OF FALLING INTERACTS WITH ACTN3 GENOTYPE TO PREDICT FAST GAIT SPEED IN OLDER ADULTS
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