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Basic equipment worn by most football players include a helmet, shoulder pads, gloves, shoes, and thigh and knee pads, a mouthguard, and a jockstrap or compression shorts with or without a protective cup. Neck rolls, elbow pads, hip pads, tailbone pads, rib pads, and other equipment may be worn in addition to the aforementioned basics.
Early research (Bathurst and Jarrett, 1988) [13] found that cellular confinement reinforced gravel bases are "equivalent to about twice the thickness of unreinforced gravel bases" and that geocells performed better than single sheet reinforcement schemes (geotextiles and geogrids) and were more effective in reducing lateral spreading of infill under loading than conventional reinforced bases.
Track segments (i.e., trackshoes) that incorporate grouser bars are known as grouser shoes, and typically include one to three grousers. [3] Grousers are commonly used on construction vehicles such as bulldozers, loaders, and excavators. Grousers may be permanently attached to, or formed as a single piece with, the track shoe, or they may be ...
Huaraches are a type of minimalist shoe. In their 2018 paper for the Journal of Sports Sciences, Devon R. Coetzee their co-authors defined minimalist footwear as having a sole and upper that weighed 200-gram (7.1 oz) or less and were highly flexible, a heel height of 20 millimetres (0.79 in) or shorter, and a "heel-toe differential" of 7 millimetres (0.28 in) or less.
The concept of spiked and studded shoes for other sports began to emerge as well in the late 19th century. In the 1890s, a British Company (now known as Reebok), developed the earliest known spiked leather running shoes. [4] Cleats began to be used in the United States in the 1860s when metal spikes were first used on baseball shoes. [5]
Ground reinforcement is a reinforcing element placed on a flat surface in order to increase accessibility for vehicles and ensure proper rainwater drainage in addition to protection. The reinforcing element, usually in the form of grids, is used beneath grass , asphalt , concrete in roads , parking lots , driveways and paths .