Push-up

A push-up (or press-up) is a common calisthenics exercise performed in a prone position by raising and lowering the body using the arms. Push-ups exercise the pectoral muscles, triceps, and anterior deltoids, with ancillary benefits to the rest of the deltoids, serratus anterior, coracobrachialis and the midsection as a whole. Push-ups are a basic exercise used in civilian athletic training or physical education and commonly in military physical training. They are also a common form of punishment used in the military, school sport, or in some martial arts disciplines.

In the past this movement was called a floor dip.

Etymology

The American English term push-up was first used between 1905 and 1910, while the British press-up was first recorded between 1945 and 1950.

Muscles worked

While the push-up primarily targets the muscles of the chest, arms, and shoulders, support required from other muscles results in a wider range of muscles integrated into the exercise.

Abdominals

The rectus abdominis and transversus abdominis contract continually while performing push-ups to hold the body off the floor and keep the legs and torso aligned. The rectus abdominis spans the front of the abdomen and is the most prominent of the abdominal muscles. The transversus abdominis lies deep within the abdomen, wrapping around the entire abdominal area. Both muscles compress the abdomen, and the rectus abdominis also flexes the spine forward, although it does not execute this function when performing push-ups.

Dip (Catalan myth)

In Catalan myth, Dip (Catalan pronunciation: [ˈdip]) is an evil, black, hairy dog, an emissary of the Devil, who sucks people's blood. Like other figures associated with demons in Catalan myth, he is lame in one leg. Dip is pictured on the escutcheon of Pratdip.

See also

Sources

El gran libro de los vampiros by Angel Gordon, Morales y Torres editores.Spanish

External links

Decagonal prism

In geometry, the decagonal prism is the eighth in the infinite set of prisms, formed by ten square side faces and two regular decagon caps. With twelve faces, it is one of many nonregular dodecahedra. The decagonal prism has 12 faces, 30 edges, and 20 vertices. If faces are all regular, it is a semiregular or prismatic uniform polyhedron.

Uses

The decagonal prism exists as cells in two four-dimensional uniform 4-polytopes:

Related polyhedra

External links

Dip (exercise)

The dip is an exercise used in strength training. Narrow, shoulder-width dips primarily train the triceps, with major synergists being the anterior deltoid, the pectoralis muscles (sternal, clavicular, and minor), and the rhomboid muscles of the back (in that order). Wide arm training places additional emphasis on the pectoral muscles, similar in respect to the way a wide grip bench press would focus more on the pectorals and less on the triceps.

Classic meaning

In past decades, the term floor dip was used in place of what is now called a press-up or push-up.

Modern meaning

To perform a dip, the exerciser hangs from a dip bar or from a set of rings with their arms straight down and shoulders over their hands, then lowers their body until their arms are bent to a 90 degree angle at the elbows, and then lifts their body up, returning to the starting position. Short people are able to cope better with a narrower grip, but not with a wider one.

Due to natural flexibility in the shoulder joints, it is important to try to "lock" them as much as possible during this exercise. Otherwise, the supporting rotator cuffs may become strained.

Floor

A floor is the walking surface of a room or vehicle. Floors vary from simple dirt in a cave to many-layered surfaces modern technology. Floors may be stone, wood, bamboo, metal, or any other material that can support the expected load.

The levels of a building are often referred to as floors although a more proper term is story or storey.

Floors typically consist of a subfloor for support and a floor covering used to give a good walking surface. In modern buildings the subfloor often has electrical wiring, plumbing, and other services built in. As floors must meet many needs, some essential to safety, floors are built to strict building codes in the first world.

Special floor structures

Where a special floor structure like a floating floor is laid upon another floor then both may be referred to as subfloors.

Special floor structures are used for a number of purposes:

Floor (legislative)

The floor of a legislature or chamber is the place where members sit and make speeches. When a person is speaking there formally, they are said to have the floor. The House of Commons and the House of Lords In the United Kingdom, the U.S. House of Representatives and the U.S. Senate all have "floors" with established procedures and protocols.

Activity on the floor of a council or legislature, such as debate, may be contrasted with meetings and discussion which takes place in committee, for which there are often separate committee rooms. Some actions, such as the overturning of an executive veto, may only be taken on the floor.

United Kingdom

In the United Kingdom's House of Commons a rectangular configuration is used with the government ministers and their party sitting on the right of the presiding Speaker and the opposing parties sitting on the benches opposite. Members are not permitted to speak between the red lines on the floor which mark the boundaries of each side. These are traditionally two sword lengths apart to mitigate the possibility of physical conflict. If a member changes allegiance between the two sides, they are said to cross the floor. Only members and the essential officers of the house such as the clerks are permitted upon the floor while parliament is in session.

Floor (band)

Floor is an American doom/stoner band from Miami, Florida, United States.

History

Initially from Miami, Floor was formed in 1992 by Steve Brooks (guitar), Anthony Vialon (guitar/bass), and Betty Monteavaro (drums). Jeff Sousa became the drummer in late 1993, and Brooks and Vialon changed their sound by implementing two uniquely low-tuned guitars, forgoing the need of a bassist. Material was recorded for two full-length albums (Dove 1994, Saturnine and Tears 1995) but neither were released until after their eponymous album years later. During that time several vinyl-only 7" EPs were released, followed by their first break in 1996. They reformed with a new line-up for one show in 1997 with Henry Wilson on drums and practiced only occasionally until 2001. Finally they released their first full-length album, self-titled Floor, before splitting up in 2003. The Self-Titled album went on to garner accolades from the underground music scene and the bands' cult-following grew in their absence. Brooks would go on to form the band Torche. Henry Wilson went on to form the bands Dove and House of Lightning. Anthony Vialon, having also played several years with Miami outfit Cavity, focused on theology.