每天要走多少步才有益健康？
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二月是心脏健康月——这是一个去健身的好时机，并且许多人使用可穿戴技术来辅助健身活动。
这些装备的其中一个功能，例如跑步机每天都能追踪步数，它通常默认的目标是10000步。大多数设备允许调整这一目标。所以跑多少步才可以？
杜兰大学公共卫生与热带医学学院临床流行病学副教授和杜兰预防研究中心调查员Jeanette Gustat主要观点是，人们应该步行，步行超过他们以前所走的路。
Gustat说“时间和强度的因素是一样的，走路很容易，因为它需要很少的设备，几乎每个人都能做到。”
尽管许多健身等跟踪器例如美国心脏协会是以10000步为走路目标，但是官方全民健身指南并不规定特定数量的步数，Gustat说。
为了对健康有益，美国卫生及公共服务部的2008年美国居民体育活动指南建议成年人每周至少进行150分钟(2.5小时)中等强度有氧身体活动，或75分钟高强度体力活动(1.25小时)，或等量的两者的组合。
美国外科主任最近发起一项加强锻炼的活动，他们使用这些体育活动指导方针意在促进步人们加强步行运动。
据一些报道称， 步行运动起源于1964年东京奥运会，然后日本开始计划营销活动促销计步器。随着计步器在美国的兴起，研究人员发现它们是有用的，开始将它应用到体育活动上。2011年的一项研究建议成年人每周5天，每天30分钟至少走3000步，或每天三次，每次10分钟走1000步。
February is heart health month—a good time to get back to health and fitness goals, and many people are using wearable technology to help. One function of these devices—such as Fitbit or Garmin—is to track steps per day, and oftentimes the default goal is 10,000 steps. Most devices allow you to adjust that goal. So how many steps are enough? The main point is that people should walk, and walk more than they have previously, says Jeanette Gustat, clinical associate professor of epidemiology at the Tulane University School of Public Health and Tropical Medicine and investigator at the Tulane Prevention Research Center. "Time and intensity factor in as well," Gustat says. "But really with walking, and all activity, it is about doing more. And with walking it's easy because it takes little equipment and nearly everyone can do it." Although many fitness trackers—and groups such as the American Heart Association—cite 10,000 steps as a goal, official national fitness guidelines don't actually promote a specific number of steps, Gustat says. To obtain substantial health benefits, the U.S. Department of Health and Human Services' 2008 Physical Activity Guidelines for Americans recommends adults get at least 150 minutes (2.5 hours) of moderate-intensity aerobic physical activity, or 75 minutes (1.25 hours) of vigorous-intensity physical activity, or an equivalent combination, each week. The U.S. Surgeon General recently launched a Step It Up campaign to promote walking and walkable communities, which uses these physical activity guidelines. According to some reports, steps recommendations originated around the 1964 Tokyo Olympics and a Japanese marketing campaign to promote pedometers. With the rise of pedometer use in the U.S. as well, researchers have found them to be useful and began translating physical activity recommendations into steps. A 2011 study from the Louisiana State University's Pennington Biomedical Center recommended that adults walk a minimum of 3,000 steps in 30 minutes on five days each week or three bouts of 1,000 steps in 10 minutes each day.
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