有趣的是,研究人员发现,这种相关性在40岁至65岁人群中最强。密西西比大学的健康与运动科学助理教授保罗·罗普林茨(Paul Loprinzi)认为,这表明,要是你不想让端粒缩短,中年可能是开始或者坚持锻炼计划的关键时段。他与密西西比大学的杰里米·伦内克(Jeremy Loenneke)、加州大学旧金山分校(University of California, San Francisco)的伊丽莎白·布莱克本(Elizabeth Blackburn)教授同为本研究的共同作者,而布莱克本教授曾因发现了端粒的分子性质而与其他人分享了2009年的诺贝尔奖。
However, as Dr. Loprinzi points out, this study is purely associational, so cannot show whether exercise actually causes changes in telomere length, only that people who exercise have longer telomeres.
然而,正如罗普林茨博士指出的那样,这项研究只是个纯粹的相关性研究,所以它只表示锻炼的人端粒较长,却无法说明运动是否确实会导致端粒长度的变化。
The study also couldn’t tease out the ideal amount of exercise for telomere maintenance, Dr. Loprinzi say, because the survey asked only whether someone exercised at all, not how frequently.
罗普林茨博士还说,由于调查只询问了受访者是否进行过锻炼,并没有问及锻炼的频率,所以这项研究无法确定要维持端粒长度所需的理想运动量。
Perhaps most important, the results don’t tell us whether longer telomeres translate into better health. But, Dr. Loprinzi says, other studies, including from his lab, “have shown that telomeres are predictive of mortality,” with shorter telomeres equating to shorter lives.
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