The online version of this article (doi:10.1186/1476-7120-10-39) contains supplementary material, which is available to authorized users.
In-Chang Hwang, Kyung-Hee Kim contributed equally to this work.
The authors declare that they have no competing interests.
JZ conceived of and designed the study. DS and MK made substantial contributions to conception and design. SK and YK contributed to data interpretation and revision of the manuscript. WC, MI and HK analyzed data and contributed to discussion of the results. KK collected and analyzed the data, searched for articles, analyzed the data and made substantial contribution to revision of the manuscript. IH collected, managed and analyzed the data, searched for articles, drafted the figures, and drafted the first manuscript. All authors read and approved the final manuscript.
Although chronic effects of exercise on endothelial function are established, the impact of acute exercise on flow-mediated dilatation (FMD) of brachial artery has not been elucidated yet.
Eighty-six young healthy volunteers were prospectively enrolled from January 2011 to December 2011. The subjects completed FMD tests at rest and immediately after treadmill exercise test. Primary outcome was the impact of acute exercise on FMD, measured by the difference of FMD before and after exercise. Secondary outcomes were the relationship of gender and exercise habit with FMD.
Seventy-four subjects who met the eligibility criteria were included for analysis. Thirty-five (47.3%) were male, and the mean age was 22.7±2.7 years. FMD was reduced after exercise (8.98±4.69 to 7.51±4.03%; P=0.017) and the reduction was found in female group (10.36±5.26 to 7.62±3.71%; P=0.002) but not in male group. Post-exercise FMD was significantly impaired in subjects who did not exercise regularly (6.92±3.13% versus 8.95±5.33%; P=0.003). The decrease of FMD after exercise was greater in female group (−2.75±5.28% versus 0.27±3.24%; P=0.003) and was associated with exercise habit (β=2.532; P=0.027).
In healthy young subjects, FMD was reduced after a bout of acute exercise. The impact of acute exercise showed significant differences according to gender and exercise habit. FMD impairment after acute exercise was observed in females and subjects without regular exercise.
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- Impact of acute exercise on brachial artery flow-mediated dilatation in young healthy people
- BioMed Central
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