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1 Departments of Physiology and Physical Medicine, Rehabilitation and Sports Medicine, University of Puerto Rico School of Medicine, San Juan, Puerto Rico 00936; 2 Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808 - 4124; 3 Physical Activity Sciences Laboratory, Laval University, Québec, Canada G1K 7P4; 4 Division of Biostatistics, Washington University School of Medicine, St. Louis, Missouri 63110; 5 School of Kinesiology and Leisure Studies, University of Minnesota, Minneapolis, Minnesota 55455; 6 Department of Kinesiology, Indiana University, Bloomington, Indiana 47405; and 7 Department of Health and Kinesiology, Texas A&M University, College Station, Texas 77843 - 4243
We examined the
association between an angiogenin gene polymorphism and blood pressure
(BP) at rest and in response to acute exercise before and after a 20-wk
endurance-training program. Subjects were 737 normotensive and
borderline hypertensive subjects (257 black and 480 white). The
polymorphism was detected by PCR and digestion with AvaII,
yielding an allele of 253 bp or a rare allele of 194 + 59 bp.
Resting and exercise [50 W; 60, 80, and 100% of maximal
O2 consumption (
O2 max)]
systolic (SBP) and diastolic BP were determined before and after
training. Among blacks, adjusted SBP in the sedentary state was
significantly lower in carriers of the rare allele at rest and exercise
intensities of 60, 80, and 100% of
O2 max. In the trained state, carriers
of the rare allele had a significantly (P < 0.05)
lower SBP than did noncarriers at rest and at 80 and 100% of
O2 max. The genotypic effect observed
among blacks was not evident among whites. Furthermore, change in BP
(after
before) was not significantly associated with the
genotype. In conclusion, the angiogenin gene AvaII
polymorphism is associated with a lower SBP at rest and in response to
acute high-intensity exercise in blacks but not in whites.
genetics; AvaII; African Americans; acute exercise; endurance exercise
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