Most of us know that exercise is good for us.我们大多数人都知道，演习是对我们有好处。 It boosts circulation and tones the cardiovascular system.它增强了流通和音调的心血管系统。 It builds strength, burns calories and reduces depression.它建立的实力，烧伤卡路里，并降低抑郁症。 It improves insulin sensitivity in people with diabetes.它提高胰岛素敏感性在糖尿病的人。 It may even help delay the onset of Alzheimer’s disease.它甚至可能帮助延缓发病的阿尔茨海默病的。 But can you even imagine that it can partially reverse aging at the cellular level.但你能想象，甚至，它可以部分扭转老化，在细胞水平上。

In a study appearing this week in the online journal PLoS geneticists looked at the effects of six months of strength training in 25 elderly volunteers aged 65 and older (average age: 70).在一项研究中出现的这个星期在网上杂志plos遗传学家研究的影响， 6个月的力量训练在25个长者义工年龄在65岁和老年人（平均年龄： 70 ） 。

“To be honest, we were expecting some indication that the exercise program improved strength,” says biologist Simon Melov, director of genomics at the Buck Institute in Novato, Calif., and coauthor of the study. “老实说，我们期待的一些迹象显示，这次演习的计划改善的力量，说： ”生物学家西蒙melov主任，在基因组学研究所将责任推卸在诺瓦托，加州，和共同作者的研究。 What the scientists didn’t expect was what they actually found—that after six months of resistance training, there were dramatic changes at the genetic level.什么科学家没料到的是什么其实他们发现，即经过6个月的阻力训练，有戏剧性的变化在基因的水平。 As Melov puts it, “The genetic fingerprint [of the elderly participants] was reversed to that of younger people—not entirely, but enough to say that their genetic profile was more like that of young people than old people.”作为melov的说法， “遗传指纹[老人参加]扭转这一对年轻的人-不完全，但足以说，他们的遗传简介更像是说，年轻的人比旧人” 。

What kind of workout routine does it take to produce these changes?什么样的锻炼例行是否采取出示这些变化呢？ The seniors went through a rigorous exercise program—an hourlong session of strength training twice a week for six months, using the same types of machines found in most gyms.老人经历了严格的锻炼计划-一小时会议的力量训练每周两次为6个月内，使用同类型的机器，发现在大多数体育场馆。 At each session, they performed three sets of 10 contractions for each muscle group, similar to a standard workout (albeit using lighter weights than most young people would use).在每届会议上，他们表演了三套10收缩为每个肌肉组，类似的一套标准作业（尽管使用较轻的重量比大多数年轻的人会使用） 。 Trainers and kinesiologists were on hand throughout to make sure the participants used the machines properly and did not injure themselves.导师和kinesiologists人对整个手，以确保参加者使用的机器，妥善，并没有伤害自己。

The take-home message is clear.该带回家的讯息是明确的。 “It’s never too late to start exercising,” says Tarnopolsky. “这是永远不会为时已晚开始锻炼，说： ” tarnopolsky 。 You’re only as old as your genes.您只需要一样古老的基因。
Source:资料来源： MSNBC MSNBC的