Temple University - Exercise cannot reduce a sodium-retaining hormone in African Americans known to potentially cause hypertension, found Michael D. Brown, Ph.D., the senior author of a study in the September 2007 issue of Experimental Physiology .坦普尔大学演习,并不能减少钠挡激素非裔美国人知道,有可能导致高血压,发现迈克尔布朗,博士,资深作者的一项研究显示,在2007年9月发行的实验生理学 . Brown is an associate professor of kinesiology at Temple University’s College of Health Professions.布朗是一个副教授运动学坦普尔大学的高校生的专业.

The hormone, aldosterone, influences the kidney’s regulation of blood pressure, but too much of it can contribute to the development of hypertension because it causes the kidney to retain salt.激素,醛固酮,影响肾脏的调节血压,但过多的,它可以促进发展,对高血压,因为它会导致肾脏保留盐. Aldosterone, released by the adrenal glands on top of the kidneys, plays a role in the complex system used by the body to regulate blood pressure.醛固酮释放肾上腺之上,对肾脏的作用,在复杂的系统,用身体来调节血压.

“Although the results are discouraging for African Americans and hypertension, it’ll point us in other directions that may have more potential and could be the key to reducing hypertension,” said Brown, who has a background in exercise physiology. "虽然结果是令人沮丧的非裔美国人和高压,它就会一点,我们在其他方向可能有较大潜力可关键减低高血压, "布朗说,有一个背景,在运动生理学.

Many African Americans develop the salt-sensitive form of hypertension.许多非洲裔美国人,发展盐敏感性高血压形成. Approximately 40 percent of African Americans have hypertension — the highest rate of any racial or ethnic group in the United States — but there is little data about what makes them more susceptible to this condition, Brown said.大约40 %的非洲裔美国人有高血压发生率最高的任何种族或民族,在美国,但有一点是什么类型的数据,使他们更容易受到这种条件下,布朗说.

This study is based on the premise that the prevalence of blood pressure sensitivity to salt is extremely high is African Americans.这项研究是基于一个前提,流行血压敏感性盐分极高,是非裔美国人. Alterations in aldosterone regulation may play a role because aldosterone causes the kidney to retain salt.改建醛固酮调控可以扮演一个角色,因为醛固酮引起肾脏保留盐. Brown said he wanted to find out if exercise could lower the levels.布朗说,他想看看是否可以行使较低水平.

In the study, he found that the level of aldosterone was related to how the two racial groups distributed body fat.在这项研究中,他发现水平醛固酮有关如何将这两个种族团体散发体内脂肪. Caucasians generally stored fat in the abdomen area, whereas African Americans had fat distributed throughout the body in a layer under the skin.白种人通常储存脂肪,在腹部地区,而非裔美国人已发各地散发体一层皮肤下. The six-month study involving 35 Caucasians and African Americans with hypertension found that aerobic exercise training program reduced aldosterone levels in Caucasians by 32 percent, but levels for African Americans were reduced by only 8 percent.这项为期六个月的研究,涉及35个白人和非裔美国人的高血压患者,发现有氧运动训练计划,降低醛固酮水平,在白种人为32 % ,但目前水平为非洲裔美国人只减少了百分之八. Total body fat was reduced only in Caucasians, which might be a clue to the drop in aldosterone.体内脂肪总量减少了,只有在白种人,这可能是一条线索,以减少醛固酮.

“The kidneys help to regulate blood pressure by changing the levels of salt and water in our body. "肾脏有助于调节血压的变化水平,盐和水的身体. Sometimes the kidneys reset at a higher blood pressure level if it has retained too much salt,” Brown said.有时肾脏移向较高的血压水平,如果它保留了太多的盐, "布朗说.

While the study showed exercise did not lower aldosterone in African Americans, exercise still has many other benefits for this population, Brown said.而研究显示锻炼不低醛固酮是非裔美国人,运动仍然有许多其他的好处,这对于人口,布朗说.

“Exercise has the capacity to affect so many things. "演习,有能力去影响,所以很多东西. It’s a way for the body to correct itself,” he added.它的一个途径身体,以纠正自己, "他补充说.

“Solving the cause of hypertension is similar to solving a big puzzle. "解决导致高血压是同类解决一大难题. Each piece of the puzzle represents a contributing factor to hypertension.每一块拼板的一个促进因素与高血压. Each of these pieces, or possible causes of hypertension, needs to be studied in a systematic way,” Brown said.上述每件,或可能导致高血压,需要加以研究,有系统地, "布朗说.

Brown will continue his research in this area with a $3.5 million National Institutes of Health grant awarded earlier this year.布朗将继续其在这方面的研究与一个350万美元的美国国家卫生研究院给予了今年早些时候. In September, Brown will recruit African Americans with hypertension for a study on how exercise can improve the blood vessel condition. 9月,布朗将招收非裔美国人高血压患者进行一项研究,探讨如何锻炼可以改善血管状况. The study will also take an in-depth look at how genes can contribute to hypertension.这项研究也将在深入研究基因如何能有助于高血压.