Correct answer: speed skating

Speed skates are a bit like "slippers"

Although speed skating and short track speed skating both compete on the ice with skates, this skate is different from other skates, and there is still an article to say about the difference.

Speed skating skates have long blades, narrow and flat blades (small curvature), large ice pushing area and low friction resistance when contacting with the ice surface, and are suitable for long-distance skating. The skates have only one fixed point (the front of the skates and the skates are fixed together), and the back is not fixed. For example, speed skating skates are a bit like "slippers". Athletes don't always stick their heels on the skates when skating.

Short-track speed skating skates have a short blade, a large blade curvature and a small contact area with the ice, and the skates are completely fixed on the skates.

Speaking of which, I'd like to introduce the skates for figure skating. The skates for figure skating not only have short blades, but also have teeth at the front end, so they can move flexibly and easily change the sliding direction. The invention of the knife tooth allows athletes to complete more difficult movements.

Competition clothes are very different, just look at the helmet.

When the TV camera cuts only one athlete, and the explanation of venue factors is less, in fact, you can also tell whether the video signal comes from the speed skating field or the short track speed skating field.

Athletes who don't wear helmets in the competition belong to speed skating, and those who don't wear helmets are short-track speed skaters, so it is clear at a glance.