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24-411: A layback spin is a variation of the upright spin , a spin in figure skating . British figure skater Cecilia Colledge was "responsible for the invention" of the spin and the first to execute it. Colledge's coach, Jacques Gerschwiler, who was a former gymnastics teacher and according to Colledge "very progressive in his ideas", got the idea for the upright spin while watching one of Colledge's trainers,

48-527: A back attitude position and arching the head and upper body backward so that the skater faces up towards the sky, ceiling, or further. The free leg position is optional. A variation of the layback spin is the Biellmann spin , made popular by world champion Denise Biellmann , which the International Skating Union (ISU), the organization that governs figure skating, considers a difficult variation of

72-401: A boutique advisory firm where he was chairman and CEO from 1998 to 2005. In 2006, he was a co-founder of BladeRock Capital, an investment firm that focused on life science companies. It made investments in undervalued public (and selectively, in private) companies, which are developing medical breakthrough products that address critical and severe unmet medical needs. In 2015, BladeRock Capital

96-456: A former circus performer turned acrobatics instructor, train Colledge to perform backbends "by means of a rope tied around her waist". The upright spin has long been associated with women's skating, but men have also performed it. Skaters include it in their programs because it increases their technical content and fulfills choreographic needs. The layback spin is executed by holding the free leg in

120-538: A long-running annual ice show that raises money to benefit the Jimmy Fund and Dana–Farber Cancer Institute . Following his skating career, Petkevich originally intended to go to medical school, but after attending University of Oxford as a Rhodes scholar , and studying virology , he earned a Ph.D. in cell biology in 1978. Petkevich studied music privately, was a Fellow in the Music Department at Harvard, and

144-428: A more athletic costume of a jumpsuit and turtleneck sweater rather than the more formal suit-and-tie outfit that was otherwise universal in the 1960s. By the early 1970s, many other skaters had emulated Petkevich's costume style. He earned a spot on the 1968 Olympic team at age 18 by edging out Scott Allan for third place at that year's U.S. Figure Skating championships. Fourth after the compulsory figures, he earned

168-460: A standing ovation for a dramatic performance that included a jump he invented called the Bourkey, after his coach, described by Sports Illustrated as “jump in which he kicks sideways, whirls, arches and generally hangs around up in the air long enough to wash out a pair of sweat socks.” Petkevich was the recipient of an unusual trophy. At the 1947 World Figure Skating Championships , Ulrich Salchow

192-628: Is an American former figure skater . He is the 1971 U.S. national champion and North American champion . He placed 6th at the 1968 Winter Olympics and 5th at the 1972 Winter Olympics . His best finish at the World Championships was 4th in 1972; he placed 5th in 1969, 1970, and 1971. In 1972, he won the gold medal at the World University Games. The son of a radiologist , Dr. Frank Michael Petkevich, and Delphine Marie (Proulx) Petkevich, Petkevich first tried skating at age two, but

216-411: Is arched. The free leg is optional. The angular velocity of an upright spin is low, about one revolution per second, but its moment of inertia is large during its balancing stage. As the angular velocity increases (up to five revolutions per second), the moment of inertia is decreased as the arms and free leg move towards the center of the spin. At this point, the center of gravity reaches its maximum as

240-410: The layback spin. It is executed by the skater grabbing their free blade and pulling the heel of their boot behind and above the level of the head so that their legs are in an approximate full split, with the head and back arched upward. The spin "requires much strength and extreme flexibility". Other difficult variations of the layback spin is the full layback (the upper body is arched sideways with

264-408: The layback spin. It is executed by the skater grabbing their free blade and pulling the heel of their boot behind and above the level of the head so that their legs are in an approximate full split, with the head and back arched upward. The spin "requires much strength and extreme flexibility". Other difficult variations of the layback spin are the full layback (the upper body is arched sideways with

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288-411: The middle of multi-rotational jumps. Petkovich also states that the forward upright spin "may well be the most exciting basic spin in skating". Skaters can attain "unbelievable" speed while performing the upright spin; because of its speed, it is often the final spin in a program. Other variations of the upright spin is the scratchspin and the sideways leaning spin. The scratchspin gets its name from

312-471: The other partner, with the axis to their upper back to the knee over 45 degrees. Upright spin The International Skating Union (ISU), the governing body of figure skating, defines an upright spin as a spin with "any position with the skating leg extended or slightly bent which is not a camel position". British figure skater Cecilia Colledge was "responsible for the invention" of

336-415: The other partner, with the axis to their upper back to the knee over 45 degrees. Figure skating champion and writer John Misha Petkovich categorizes the upright spin into two further groups: the back upright spin and the forward upright spin . He calls the back upright spin "perhaps the most important spin in skating" because the position skaters execute toward the end of the spin is also executed in

360-422: The scratches made by the blade on the ice, which creates loops or circles on the ice parallel to the tracings made when the skater's weight is centered between the center of the spinning blade and the first tooth of the skate's toepick. When performed extremely quickly, it is also called the blur spin. The sideways leaning spin is executed when the skater's head and shoulders are leaning sideways and their upper body

384-482: The skater stretches vertically, the moment of inertia is at its minimum, and the angular velocity is at its maximum. The skater ends the spin by opening their arms, which increases the moment of inertia, and they exit the spin on a curve. YouTube clip of Dorothy Hamill performing the scratchspin, 1985. Retrieved 4 August 2022. John Misha Petkevich John Misha Petkevich (born March 3, 1949, in Minneapolis )

408-617: The spin and the first to execute it. Colledge's coach, Jacques Gerschwiler , who was a former gymnastics teacher and according to Colledge "very progressive in his ideas", got the idea for the upright spin while watching one of Colledge's trainers, a former circus performer turned acrobatics instructor, train Colledge to perform backbends "by means of a rope tied around her waist". The upright spin has long been associated with women's skating, but men have also performed it. Skaters include it in their programs because it increases its technical content and fulfills choreographic needs. A variation of

432-474: The upper body bent to the side from the waist towards the ice or arched back from the waist towards the ice) and when the skater's upper body is arched sideways or arched back, with their free leg almost touching their head in a full circle. In ice dance, difficult variations of the layback spin include a split , with both legs straight and the boot of one partner's free leg held up higher than their head (which can be supported by their partner) and leaning away from

456-474: The upper body bent to the side from the waist towards the ice or arched back from the waist towards the ice) and when the skater's upper body is arched sideways or arched back, with their free leg almost touching their head in a full circle. In ice dance, difficult variations of the layback spin include a split , with both legs straight and the boot of one partner's free leg held up higher than their head (which can be supported by their partner) and leaning away from

480-455: The upright spin is the layback spin , executed by holding the free leg in a back attitude position and arching the head and upper body backward so that the skater faces up towards the sky, ceiling, or further. The free leg position is optional. A variation of the layback spin is the Biellmann spin , made popular by world champion Denise Biellmann , which the ISU considers a difficult variation of

504-615: Was composer-in-residence at Eliot House, Harvard. He has composed a clarinet quintet, a piano trio, a sonata for piano and a number of songs in different genre. Most of the compositions have been played in small concerts. In 1983, he joined Hambrecht & Quist where he was Head of Healthcare Banking and a biotechnology analyst. From 1987 to 1989, he pursued healthcare investment banking. In 1989, he joined Robertson Stephens & Co. as Managing Director and served several roles including Head of Healthcare Banking and ultimately became Head of Investment Banking. He founded The Petkevich Group,

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528-652: Was eight years old when he began to actively pursue the sport, and age 14 when he became serious about competing. He grew up in Great Falls, Montana , where he was coached to the Olympic level by Arthur Bourke . He later worked with Gustave Lussi . Petkevich was known as a particularly dynamic free skater for his time. His emphasis on freer musical expression and less rigid body lines set him apart from most other men's singles competitors of his era. He has also been credited with innovating fashion for male competitors by wearing

552-514: Was particularly impressed by Dick Button 's skating, and gave him one of his own trophies. Following the 1972 Olympics, Button passed on Salchow's trophy to Petkevich. In 2010, Petkevich passed the trophy to Paul Wylie , keeping alive the meaning of the trophy which is meant to reward a skater for having had a material impact on the sport. While still a competitive skater, Petkevich attended Harvard University , and graduated in 1973. In 1970, while at Harvard, he founded An Evening with Champions ,

576-564: Was renamed V2M Capital and was reorganized with Petkevich as the sole chief investment officer. As of 2021, Petkevich remains Chief Investment Officer at V2M Capital, LLC. Petkevich is on the board of trustees of the United States Figure Skating Foundation, serves as its treasurer and is chairman of the investment committee. Previously, he served on the board of the San Francisco Opera, on the advisory board of

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