The International Pole Dance Fitness Association (IPDFA) promotes pole dancing as a form of fitness exercise.
 The organisation acts as a supervisory body for the sport and annually organizes the International Pole Championship (IPC).
 It has a database of pole dancing studios and instructors around the world and also trains/accredits instructors.
Elena Gibson (born 25 October 1976) is a pole dance choreographer, teacher and performer who has played a leading role in the development of pole dancing as an art form and sport across the world.
Pole dance combines dance and acrobatics centered on a vertical pole.
 This performance art form takes place not only in gentleman's clubs as erotic dance, but has also recently gained popularity as a mainstream form of fitness, practiced by many enthusiasts in gyms and in dedicated dance studios.
 Amateur and professional pole dancing competitions are held in countries around over the world.
Tom Sjogren (also spelled Sjögren) is a US explorer originally from Sweden who has completed the Three Poles Challenge - climbing Mount Everest (in 1999, after three previous attempts) and leading unsupported expeditions to the North and South Poles.
 He completed the Three Poles Challenge with his wife, Tina; they are the first married couple to achieve this and she is the first woman to do so.
 They billed themselves at the time as "T & T".
 They also broke broadcasting records on two of their three expeditions: the world altitude broadcasting record on Everest and the first live audiovisual broadcast from the Antarctic ice cap (in November 2001).
 They reached the South Pole on February 2, 2002.
 On their expedition to the North Pole, they also broadcast live, and broke the speed record with a time of 118 days, reaching the Pole on 29 May 2002.
 At both poles, they raised an American flag a friend had found on the street in New York on September 11.
Chinese poles are vertical poles on which circus performers climb, slide down and hold poses.
 The poles are generally between 3 and in height and approximately 2 to in diameter.
 Some poles have a slightly larger pole that rotates around the static central pole using ball bearings.
 This rotating pole allows a performer to spin on the vertical axis, giving a performer the ability to incorporate rate of spin into what would otherwise be static moves.
 Bringing the body closer into the pole causes the performer to spin faster.
 A few Chinese pole tricks have been incorporated with pole dancing techniques.
A prism paralleloscope is a piece kit used by artillery units as a gun aiming point.
 It is a type of paralleloscope that uses a prism instead of a plain mirror.
 Its purpose was to function as an aiming point in the horizontal plane when laying for indirect fire artillery.
 The prism paralleloscope entered service with the British Army in the late 1950s.
 It was permanently fitted in a fibre-glass case with a lid.
 This case was mounted on two short metal vertical poles so that it was about two feet above the ground, these vertical poles were held together by two horizontal rods slightly shorter that the parallescope case.
 Once mounted the lid of the case provided a 'canopy' above the parallescope.
A Danish pole is a circus prop, consisting of a wooden pole about 4 metres long and with a 5 cm diameter.
 It is fastened to a turnable base on the bottom and to a rope on top.
 The rope can be slackened, causing the pole to hang at an angle and permitting the artists to swing the pole around the base and do acrobatics on it while it turns.
 The rope can also be tightened, causing the pole to stand directly up in the air and allowing the artists to do more traditional pole acrobatics.
High Flyers, also known as Long Line High Flyers, are vertical poles used by commercial fishermen that serve to locate the beginning and end of a long fishing line, commonly used in tuna, swordfish, as well as other fishing.
 Often constructed with a vertical Marine Grade aluminum pole which resists corrosion, they have a tapered fluted buoy to provide buoyancy, and the poles are about 6–9 feet (2–3 meters) high above the water.
 The counter-weight at the bottom is often a PVC pipe filled with concrete.
 The High Flyer is tipped with an aluminum radar reflector that warns ships from a distance of a line between two High Flyers.
The International Pole Championship (IPC) is a competition organized annually by International Pole Dance Fitness Association (IPDFA).
 It is the brainchild of renowned performer and instructor Ania/Anna Przeplasko (pronounced pshe plaz ko).
 It is the world first international pole dance fitness championship where winners are credited solely for their dance skills, trick techniques and overall showmanship.
 The IPC is the only pole competition that gathers the world’s best men and women.
 Winners of national championships are granted entry to this championship.
 Undiscovered talents can submit a video entry via the IPC website where the winner of online voting gains, along with the title Pole Idol, sponsorship to the Grand Finals.
Showtime is a type of performance Litefeet / pole dancing done as a busking routine using hand holds installed inside New York City Subway cars.
 Showtime includes acrobatic flips, hat and shoe tricks, and pole tricks.
 Estimates have placed the number of Showtime dancers in the low hundreds.

Question: Chinese poles are vertical poles on which circus performers climb, slide down and hold poses, a few Chinese pole tricks have been incorporated with pole dancing, Pole dance combines dance and acrobatics centered on which type of pole?
Answer: vertical