<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: 四虎精品国产AV二区| 一区二区三区四区五区黄色| 国产成人免费永久在线平台 | 精品国产一区二区三区性色| 免费观看的av在线播放| 亚洲十八禁一区二区三区| 国产乱弄免费视频观看| 日韩精品毛片一区到三区| 日韩精品人妻系列无码专区免费| 成人av天堂网在线观看| 久久精品亚洲日本波多野结衣| 久久精品夜夜夜夜夜久久| 中文有无人妻vs无码人妻激烈| 中文字幕久久国产精品| 国产午夜福利视频合集| 日本五十路熟女一区二区| 国产精品人成视频免费播放| 精品无码视频| 国产精品日韩av在线播放| 人妻少妇精品中文字幕| 国产性生大片免费观看性| 国产a√精品区二区三区四区| 国产老妇伦国产熟女老妇高清| 日本一区二区精品色超碰| 亚洲精品国产av成人网| 无码人妻一区二区三区av| 亚洲精品无amm毛片| 91毛片网| 精品少妇av蜜臀av| 久久99久久99精品免视看国产成人| 亚洲av片在线免费观看| 538porm在线看国产亚洲| 操国产美女| 精品国产一区av天美传媒| 少妇被无套内谢免费看| 巨熟乳波霸若妻在线播放| 91久久精品亚洲一区二区三区| 亚洲av片在线免费观看| 中文字幕日韩精品人妻| 亚洲精品第一区二区在线| 亚洲AV日韩AV永久无码电影|