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A genetic variant in IL-15Rα correlates with physical activity among European-American adults
Journal article   Open access   Peer reviewed

A genetic variant in IL-15Rα correlates with physical activity among European-American adults

Michael Bruneau, Jr, Sean Walsh, Eric Selinsky, Garrett Ash, Theodore J Angelopoulos, Priscilla Clarkson, Paul Gordon, Niall Moyna, Paul Visich, Robert Zoeller, …
Molecular genetics & genomic medicine, v 6(3), pp 401-408
May 2018
PMID: 29624921
url
https://doi.org/10.1002/mgg3.368View
Published, Version of Record (VoR)CC BY V4.0 Open

Abstract

Adult Alleles Body Mass Index European Continental Ancestry Group - genetics Exercise - physiology Female Gene Frequency - genetics Genetic Variation - genetics Genotype Humans Interleukin-15 - genetics Interleukin-15 Receptor alpha Subunit - genetics Interleukin-15 Receptor alpha Subunit - physiology Male Muscle Strength - genetics Muscle, Skeletal - anatomy & histology Polymorphism, Single Nucleotide - genetics Body Composition Phenotype United States
Background Interleukin-15 (IL-15) is a myokine associated with muscle strength, possibly by attenuating protein breakdown. A variant in the alpha-receptor (IL-15Rα 1775 A>C, rs2228059) partially modulates the muscle strength and size response to resistance training. We examined if this polymorphism associated with habitual physical activity among European-American adults. Methods Men (n = 240, 23.7 ± 0.3 year, body mass index [BMI] 25.3 ± 0.3 kg/m2) and women (n = 292, 23.2 ± 0.3 year, 24.0 ± 0.3 kg/m2) were genotyped. Physical activity phenotypes were derived from the Paffenbarger Physical Activity Questionnaire. Analysis of covariance (ancova) tested log-transformed differences between the IL-15Rα genotype and physical activity phenotypes by gender with age and BMI as covariates. Results Men with the IL-15Rα 1775AA genotype spent more time in light intensity physical activity (39.4 ± 2.4 hr/week) than men with the CC genotype (28.6 ± 2.3 hr/week, (p = .009). Conclusion Further research is needed to confirm our finding and determine the possible mechanisms by which the IL-15Rα variant modulates light intensity physical activity.

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Genetics & Heredity
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