The early sailboards that ushered in this now internationally popular sport first made their appearance in 1973, with booms made of heavy wood, which was later replaced with light aluminum, with mast composed of epoxy strengthened with carbon fibers, the latter also used for reinforcement in the newer Dacron sails. Similar light materials have replaced heavier ones for the boards.

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Mountain biking

Mountain biking entails the sport of riding bicycles off-road, often over rough terrain, whether riding specially equipped mountain bikes or hybrid road bikes. Most mountain bikes share similar characteristics that underscore durability and performance in rough terrain: wide, knobby tires, large frame tubing, front fork or dual suspension shock absorbers. The durability factor means a far heavier bicycle weight to

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