<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Astronauts get sky gym workout

          By Cheng Yingqi in Beijing and Sun Ruisheng in Taiyuan | China Daily | 2016-11-07 08:04

          Astronauts get sky gym workout

          Astronaut runs on a treadmill for about an hour on Nov 7, 2016. [Photo/Xinhua]


          Escaping the effects of the Earth's gravity and floating around in space may sound exciting, but a constant state of near weightlessness can result in a number of health problems.

          That's why the astronauts aboard the Tiangong II space lab work out for two hours every day. The onboard sports apparatus - an exercise bike and a treadmill - were specially designed to help astronauts exercise their lower limbs and cardiopulmonary systems.

          "The biggest difference between the apparatus used in space and those we use in the gym was related to weight," said Qin Younian, chief engineer of the Shanxi Orient Fitness & Health Industry Co, which designed and produced the equipment.

          The total weight of the bike and treadmill on Tiangong II had to be less than 10 kilograms, while similar equipment in a gym can weigh more than 120 kg.

          "While using as many light materials as possible, we also had to ensure the strength of the apparatus, which required high technology," Qin said.

          When they run on the treadmill, the astronauts are held in place by an elastic strap that mimics Earth's gravity and helps them to maintain lower-body strength, while the exercise bike improves cardiopulmonary function.

          "We are developing a resistance-training apparatus as well as further perfecting the bike and treadmill. By the time China completes its own space station, we will be able to send up better apparatus with a weight limit of as much as 200 kg," Qin said.

          According to the Made in China 2025 strategy, published by the State Council in May last year, China will complete construction of its space station by 2020.

          "The weightless environment in space is unsuitable for humans. For example, our leg, back and waist muscles bear our weight all the time on Earth. However, without gravity, we soon lose muscle mass, and risk brittle-bone syndrome and even blood pressure problems," said Yu Jun, an amateur astronomer and senior editor at Beijing Guoke Interactive Technology Media.

          "As a result, the astronauts have to do enough exercise to alleviate the problem."







          Previous Page 1 2 Next Page

          BACK TO THE TOP
          Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
          License for publishing multimedia online 0108263

          Registration Number: 130349
          FOLLOW US
          主站蜘蛛池模板: 忘忧草影视| 青青青视频免费一区二区| 久久无码精品一一区二区三区| 中文字幕亚洲资源网久久| 538porm在线看国产亚洲| 人人妻人人澡人人爽人人精品av | 国产美女MM131爽爽爽| 亚洲尤码不卡av麻豆| 欧美中日韩免费观看网站| 久久精品亚洲精品国产色婷| 国产精品天干天干综合网| 亚洲成A人片在线观看无码不卡| 国产精品 自在自线| WWW夜插内射视频网站| 亚洲人成电影网站色mp4| 亚洲国产成人久久综合一区| 国产av熟女一区二区三区| a国产一区二区免费入口| 青青草视频华人绿色在线| 成人又黄又爽又色的视频| 欧美成人h精品网站| 制服丝袜美腿一区二区| 国产美女免费永久无遮挡| 绯色蜜臀av一区二区不卡| 亚洲国产成熟视频在线多多| 国内精品大秀视频日韩精品| 欧美性猛交xxxx富婆| 欧美成年视频在线观看| 麻豆果冻传媒2021精品传媒一区| 人妻大胸奶水2| 久久亚洲国产精品久久| 开心一区二区三区激情 | 亚洲中文字幕成人综合网| 国产高清视频一区三区| free性开放小少妇| 十八禁国产精品一区二区| 亚洲 国产 制服 丝袜 一区| 国产chinesehdxxxx老太婆| 农村国产毛片一区二区三区女| 久久亚洲国产精品五月天| 美女把尿囗扒开让男人添|