Prone position
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Word history
The word prone, meaning "naturally inclined to something, apt, liable,", is recorded in English since 1382; the meaning "lying face-down" is first recorded in 1578 but is also referred to as "laying down" or "going prone".
It derives from the Latin pronus "bent forward, inclined to," from adverbial form of the prefix pro- "forward." Both the original, literal and the derived figurative sense were used in Latin, but the figurative is older in English.
Anatomy
In anatomy, the prone position is a position of the body lying face down. It is opposed to the supine position which is face up. Using the terms defined in the anatomical position, the ventral side is down, and the dorsal side is up.
With respect to the forearm, prone refers to that configuration where the palm of the hand is directed posteriorly, and the radius and ulna are crossed.
Shooting
In competitive shooting, the prone position is the position of a shooter lying face down on the ground. It is considered the easiest and most accurate position as the ground provides extra stability. It is the starting position in three positions events. Currently the Olympics only have one purely prone event, the fifty meters men's rifle prone. Both men and women also have the fifty meters rifle three positions. Many video games (particularly first-person shooters) allow the player character to go into the prone position.
50M Prone Men (ISSF)
Male shooters shoot a .22LR calibre rifle (smallbore) over a course of fire of 60 shots to count, after unlimited sighting shots, in a time limit of 1 hour and 15 minutes (when using electronic targets). If necessary, an 'elimination' course of fire may be undertaken to reduce the number of shooters to the number that may fire simultaneously in a 'qualification' round. Each shot may score from 1 to 10 points, with no decimal points (e.g. 0,1,2,3,4,5,6,7,8,9,10, but not 3.2 or 9.8 etc.) The maximum score for an elimination or qualification round is 600 points. The top 8 shooters in the qualification round will be selected to shoot 'shot-for-shot' in an 'Olympic' final. The final is 10 shots, shot after a five minute period for unlimited sighters. The 10 shots are shot on command in a 45 second time-span, where each shooter must shoot one shot. Following each individual finals shot, the individual shooter's score for that shot is read to the audience. Shots in the final are scored to one decimal place, e.g. a shooter may score 9.8 or 10.6 in the finals for a shot, whereas in the qualification or elimination round those same shots would score 9 or 10 respectively. The maximum score for 10 shots in the finals is 109.0, with 10.9 being the maximum score for each shot. The Finals score for the 10 shots is added to the score for the qualification round.
UK Prone (NSRA)
The UK national shooting body also has courses of fire for prone shooting at multiple distances and targets. Commonly, this is split into what is known as 'short' and 'long' ranges.
UK Prone Short Range
The NSRA generally refers to shooting .22LR calibre rifles over a distance of between 15 yards and 25 metres 'indoors' as being short range shooting. Targets are generally outward gauging (touching a ring on the target scores the lower of the two adjacent scores), except on some of the Schools and older targets (e.g. 5 bull targets). Being indoors, no allowance is necessary for wind, light or other changes. Shots are scored as decimal values from 0 to 10, with no decimal places.
UK Prone Long Range
UK Long range shooting is generally over either 50 yards, 50 Metres or 100 yards distance outdoors. Targets vary, but generally the ISSF 50M (scaled) is used for 50 yards or 50 Meters and a proportional sized target is used for 100 yards. A 50 yard, 50 Metre or 100 yard target is generally constructed to allow 20 shots to count, to be executed during one 'detail' of 20 minutes duration. Sighting shots would also be included in that time period.
Outdoors, variables such as light, wind, temperature, humidity and mirage effect the target image and bullet trajectory. To help shooters, most ranges have wind flags placed at useful positions around the range to display the wind conditions.
Pilots and the prone position
The prone position is also used to describe the way pilots and other crew sometimes (but rarely) sit in an aircraft; lying on their stomachs rather than seated in a normal upright position. During World War II, the bomb aimer in some types would sit in this position to be better able to view the ground through a transparent panel or bubble in the nose of a bomber. Later, it was suggested that a pilot in the prone position might be more effective in some kinds of high-speed aircraft, and many speculative designs of the 1950s featured this arrangement. However, it never became mainstream.
See also
Sources
ko:복사 (사격)Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
