美国科学60秒 SSS 2012-10-25
时间：2018-12-24 作者：英语课 分类：Scientific American(十)月
英语课
Want to exercise, but don't have enough time? Forget slogging half an hour on the treadmill 1. You can burn the same number of calories with a few quick sprints 3 on an exercise bike. So says a study presented at a meeting of the American Physiological 4 Society.
Researchers studied 10 active young men. For three days, the men ate an energy-balanced diet--meaning calories in matched calories out. Then, still on the diet, each guy spent two days living in a sealed chamber 5, so researchers could monitor oxygen and CO2 levels—a way of exactly calculating calories burned.
Just hanging out watching TV, the guys burned 2,200 calories a day. But they burned 200 more on days when they did five 30-second sprints on an exercise bike. Now, these were not laid-back efforts. The guys pedaled as hard as they could, and had to take four-minute rest breaks in between.
Previous studies show that sprint 2 training like this improves the body's response to blood sugar, possibly helping 6 to stave off diabetes 7. And the researchers say it may be an alternative to endurance exercise for burning calories. That is, if you don't mind really feeling the burn.
1 treadmill
n.踏车；单调的工作
- The treadmill has a heart rate monitor.跑步机上有个脉搏监视器。
- Drugs remove man from the treadmill of routine.药物可以使人摆脱日常单调的工作带来的疲劳。
2 sprint
n.短距离赛跑；vi. 奋力而跑，冲刺；vt.全速跑过
- He put on a sprint to catch the bus.他全速奔跑以赶上公共汽车。
- The runner seemed to be rallied for a final sprint.这名赛跑者似乎在振作精神作最后的冲刺。
3 sprints
n.短距离的全速奔跑( sprint的名词复数 )v.短距离疾跑( sprint的第三人称单数 )
- You can run sprints only so long before you're out of breath. 你死命地跑，只能跑那么一段时间，到了喘不上气的时候，只好停下来。 来自辞典例句
- The cheetah finds the open grasslands ideal footing for its lightning-quick sprints. 非洲猎豹把开阔的草原作为它们闪电猎食的理想处所。 来自互联网
4 physiological
adj.生理学的，生理学上的
- He bought a physiological book.他买了一本生理学方面的书。
- Every individual has a physiological requirement for each nutrient.每个人对每种营养成分都有一种生理上的需要。
5 chamber
n.房间，寝室；会议厅；议院；会所
- For many,the dentist's surgery remains a torture chamber.对许多人来说，牙医的治疗室一直是间受刑室。
- The chamber was ablaze with light.会议厅里灯火辉煌。