Aggressive skating and in line skating
Rolls or aggressive skating is an extreme sport for many years idolized by young people, along with another 
one, skateboarding. Aggressive skating is a form of skating based on stunts, completely different from other forms of inline skating – recreational, speed, fitness.
It first appeared in skate parks built on half-pipes, spines and other special structures, then moved on city streets The rollers execute tricks that run on rails or sliding angled edges, jumps with different rotations over stairs and other obstacles. The term “aggressive” however, is a name used only outside the industry, not approved within the sport. Those who practice it say simply rolling or skating.
The first roller skates were created in 1760 and is characterized by a single row of wheels. In 1819, in Paris, M. Petitbled held the patent for the first roll with three aligned wheels . Over the next 40 years, all the rolls had a single row of wheels and their number may vary depending on the manufacturer.Scott Olson contributed most to the development of the sport wheels built by Chicago Roller Skate Company. By attaching four wheels, first and last being arranged outside boots, wheels began to resemble more and more with ice skates. Olson Brothers speculated that similarities and led a major change in the sports industry. Skating has become a growing hobby agreed. The correct term used when we refer to the roller wheels attached to a single line is `Rollerblade`. Unfortunately, this name is applied to all types of rolls and creates confusion among practitioners of the sport.
Rollerblading comes from the brand that is market leader in the U.S., Rollerblade, and is the popular name used for “in-line skating” or “riding a roller”.
Why to practice in-line skating?
• For being in shape which is much easier and more pleasant than an hour of aerobic (and involve the same number of calories consumed in one hour);
• Because you want a flat abdomen ;
• Because it is a nice way of relaxing and going out with friends
• Because you want to go into gear (you can reach speeds between 10 and 50 km / h);
• Because you want strong sensations (you can try a slope);
Benefits of rollerblading
• improvement in heart rate (first, riding a roller is a cardiovascular exercise)
• increase resistance during exercise and lung capacity
• training buttocks and abdominal muscles
• improving coordination
• consumption of a large number of calories
