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Cross-country skiing (sport)

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From Wikipedia, the free encyclopedia
Competitive winter sport
This article is about the sport of competitive cross-country skiing. For cross-country skiing in general, seeCross-country skiing.

Cross-country ski competition
Highestgoverning bodyFIS
NicknamesCross-country, XC skiing, Nordic skiing
Characteristics
Mixed-sexSeparate events for men and women
TypeOutdoor winter sport
EquipmentSkis,poles,boots,bindings
Presence
Olympic1924 (men),1952 (women)
Paralympic1976

Competitive cross-country skiing encompasses a variety of race formats and course lengths. Rules ofcross-country skiing are sanctioned by theInternational Ski Federation and by various national organizations. International competitions include theFIS Nordic World Ski Championships, theFIS Cross-Country World Cup, and at theWinter Olympic Games. Such races occur overhomologated, groomed courses designed to supportclassic (in-track) and freestyle events, where the skiers may employskate skiing. It also encompasses cross-countryski marathon events, sanctioned by theWorldloppet Ski Federation, and cross-countryski orienteering events, sanctioned by theInternational Orienteering Federation. Related forms of competition arebiathlon, where competitors race on cross-country skis and stop to shoot at targets with rifles, andparalympic cross-country skiing that allows athletes with disabilities to compete at cross-country skiing with adaptive equipment.

Norwegian army units were skiing for sport (and prizes) in the 18th century. Starting in the latter part of the 20th century, technique evolved from the striding in-track classic technique to include skate-skiing, which occurs on courses that have been groomed with wide lanes for those using the technique. At the same time,equipment evolved from skis and poles that were made of wood and other natural materials to comprising such man-made materials asfiberglass,carbon fiber, andpolyethylene plastics.[1]

Athletes train to achieve endurance, strength, speed, skill and flexibility at different levels of intensity. Off-season training often occurs on dry land, sometimes onroller skis. The organization of cross-country ski competitions aims to make those events accessible both to spectators and television audiences. As with other sports that require endurance, strength and speed, some athletes have chosen to use bannedperformance-enhancing drugs.

History

[edit]
Local championship,Ballangen Municipality, Norway, 1925
Swedish competitor,Martin Matsbo, in April 1935
Main article:History of skiing

In 1767 Danish-Norwegian general,Schack Carl Rantzau, codified four classes of military skiing contests and established prizes for each:[2][3]

  • Shooting at prescribed targets at 40–50 paces while skiing downhill at "top speed" (precursor to biathlon).
  • "Hurling" themselves while racing downhill among trees "without falling or breaking skis" (precursor to slalom).
  • Downhill racing on large slopes without "riding or resting on their stick" or falling (precursor to downhill racing).
  • "Long racing" with full military kit and a gun on the shoulder over ca. 2.5 km of "flat ground" within 15 minutes (precursor to modern cross-country skiing).

An early record of a public ski competition was for an 1843 event inTromsø. The announcement called the event a "wagering race on skis".[4] A distinct alpine technique emerged around 1900 from how skiing was practiced up until then whenMathias Zdarsky advocated the "Lilienfelder Ski Method" as an alternative to the Norwegian technique.[3] In Norwegian,langrenn refers to "competitive skiing where the goal is to complete a specific distance in pre-set tracks in the shortest possible time". Alpine skiing competitions (known ashill races) existed in Norway during the 18th and 19th centuries, but were discontinued when the main ski festival in Oslo focused on long races (competitive cross-country skiing) and ski jumping (now known as the Nordic disciplines). The alpine disciplines reemerged in Central Europe around 1920.Ski touring competitions (Norwegian:turrenn) are long-distance cross-country competitions open to the public, competition is usually within age categories.[5]

In the 1800s racers used a single, wooden pole, which was longer and stronger than modern poles, and could be used for braking downhill, as well. In Norway, racing with two poles ("Finland style") met with resistance, starting in the 1880s, when some race rules forbade them; objections included issues of aesthetics—how they made skiers "[waddle] like geese". As the use of pairs of pole became the norm, materials favored lightness and strength, starting withbamboo, which gave way to fiberglass, used at the1968 Winter Olympics,aluminum, used at the1972 Winter Olympics, and ultimately carbon fiber, introduced in 1975.[6]

Skate skiing

[edit]

Skate skiing was introduced to competition in the 20th Century. At the first German ski championship, held at theFeldberg in theBlack Forest in 1900, the Norwegian Bjarne Nilssen won the 23 km cross-country race and was observed using a skating motion while skiing—a technique unknown to the spectators.[7]Johan Grøttumsbråten used the skating technique at the1931 World Championship inOberhof, one of the earliest recorded use of skating in competitive cross-country skiing.[4] This technique was later used in ski orienteering in the 1960s on roads and other firm surfaces. Finnish skierPauli Siitonen developed a variant of the style for marathon or other endurance events in the 1970s by leaving one ski in the track while skating outwards to the side with the other ski (one-sided skating);[8] this became known as the "marathon skate".[9] American skierBill Koch further developed the marathon skate technique in the late 1970s.[5][10] Skate skiing became widespread during the 1980s after Koch's success with it in the1982 Cross-country Skiing Championships drew more attention to the technique.[8] Norwegian skier,Ove Aunli, started using the technique in 1984, when he found it to be much faster than classic style.[11] Skating is most effective on wide, smooth, groomed trails, using fiberglass skis that glide well; it also benefits a stronger athlete—which, according to Olav Bø, are the reasons that the technique made a breakthrough in the early 1980s.[4] Athletes widely adopted skating to both sides by the time of the 1985 world championship and it was formally adopted by the FIS in 1986[5]—despite initial opposition fromNorway, theSoviet Union andFinland—while preserving events using only classic technique.[11]

Events

[edit]

Winter Olympic Games

[edit]
A man in blue clothes with a number "33" cross-country skiing in front of three other men.
Sverre Stenersen headed for victory inNordic combined at the 1956 Winter Olympic Games inCortina d'Ampezzo, Italy.

TheWinter Olympic Games are a major international sporting event that occurs once every four years. The first Winter Olympics, the1924 Winter Olympics, was held inChamonix, France and includedNordic skiing (which includescross-country skiing) among the five principal disciplines. Cross-country events have evolved in the Winter Olympics since 1924, as seen in the following timeline:[12]

At the2022 Olympics in Beijing, cross-country skiing featured events in both classic cross-country and skate skiing (also called free technique). The two styles alternate at the major events (Olympic Games, World Championships). For example, at the 2018 Winter Olympics in Pyeongchang, the 15 km men's individual race was a skate skiing event. At the 2022 Olympics, this event was skied in classic style.[13]

FIS events

[edit]
Classical event during theFIS Nordic World Ski Championships of 2009 inLiberec,Czech Republic.

TheFIS Nordic World Ski Championships have been held in various numbers and types of events since 1925 for men and since 1954 for women. From 1924 to 1939, the World Championships were held annually, including years withWinter Olympic Games. After World War II, the World Championships were held every four years from 1950 to 1982. Since 1985, the World Championships have been held in odd-numbered years.[14]

FIS events include:[14]

FIS Nordic World Ski Championships medal events[14]
EventDates for MenDates for Women
Individual sprint2001–Present2001–Present
Team sprint2005–Present2005–Present
5 kmN/A1962–1999
10 km1991–1999, 2025–Present1954–Present
15 km1954–20231989–2003
17–18 km1925–1950N/A
20 kmN/A1978–1987
30 km1926–20031989–2023
50 km1925–Present2025–Present
4 × 10 km relay1933–2023N/A
3 × 5 km relayN/A1954–1970
4 × 5 km relayN/A1974–2023
4 × 7.5 km relay2025–Present2025–Present
Combined/double pursuit/Skiathlon1993–Present1993–Present

Ski marathon

[edit]

Marathon mass start at the 2006Tartu Maraton.

A ski marathon is a long-distance, usually point-to-point race, of more than 40 kilometers; some are held concurrent with shorter races and participation is usually open to the public. In Norwegian, such a race is calledturrenn ("ski touring race").[5] Major events have more than 10,000 participants where mass starts often have a modified starting order by groupings of participants—who have been judged to be of similar ability, beginning with the elite skiers group and ending with a group of the least experienced skiers.[15] Skiers can use either classic or skate-skiing techniques, depending on the rules of the race. Awards are usually based on overall placement, placement by sex of athlete, and by age category.[15] There are two major series in this category, theSki Classics and theWorldloppet.

Ski Classics series

[edit]
Main article:Ski Classics

Ski Classics is a commercially sponsored international long-distance cross-country skiing cup competition, held in Europe. It originated in January 2011.[16] As of the winter of 2015–6, the tour consisted of eight long-distance events, preceded by a prologue of 15 km and La Sgambeda of 24 km:[17]

Classic Series events
EventClassicFreestyleLocation
Czech RepublicJizerská Padesátka50 / 25 km30 kmBedřichov,Czech Republic
ItalyMarcialonga70 / 45 kmMoenaCavalese,Italy
GermanyKönig Ludwig Lauf50 / 23 km50 / 23 kmOberammergau,Germany
SwedenVasaloppet90 / 45 / 30 kmSälenMora,Sweden
SwitzerlandEngadin Skimarathon42 / 21 / 17 kmMalojaS-chanf,Switzerland
Switzerland La Diagonala65 km65 kmEngadinSt. Moritz, Switzerland
NorwayBirkebeinerrennet54 kmRenaLillehammer,Norway
SwedenÅrefjällsloppet65 kmVålådalen –Åre, Sweden

Worldloppet series

[edit]
Main article:Worldloppet Ski Federation

The Worldloppet Ski Federation recognizes twenty ski marathons including those in the Ski Classics series (except La Diagonala and Årefjällslopet). They recognize those athletes who complete Worldloppet races in 10 countries, at least one of which has to be on another continent, to qualify as a "Worldloppet Master". The organization, sanctioned by FIS, seeks to attract elite racers to its events with the FIS Worldloppet Cup and aims thereby to "increase media and spectator interest in long distance racing".[18] Notable races, other than the Ski Classics series include:[19]

Worldloppet Series events
EventClassicFreestyleLocation
AustraliaKangaroo Hoppet42 / 21 kmFalls Creek, Victoria, Australia
AustriaDolomitenlauf42 / 21 km60 kmObertilliach /Lienz,Austria
FranceTransjurassienne50 / 25 km76 / 54 kmLes Rousses /LamouraMouthe,France
JapanSapporo International Ski Marathon50 / 25 kmSapporo,Japan
EstoniaTartu Maraton63 / 31 km63 / 31 kmOtepääElva,Estonia
CanadaGatineau Loppet53 / 29 km53 / 29 kmGatineau, Quebec,Canada
United StatesAmerican Birkebeiner54 / 23 km50 / 23 kmCableHayward, Wisconsin, United States
FinlandFinlandia Hiihto62 / 32 km50 kmLahti,Finland
RussiaDemino Ski Marathon25 km50 kmRybinsk,Russia
PolandBieg Piastów50 /26 km30 kmSzklarska Poręba,Poland
IcelandFossavatn Ski Marathon50 kmÍsafjörður,Iceland
ChinaVasaloppet China50 kmChangchun,China
New ZealandMerino Muster42 / 21 kmWānaka,New Zealand
ArgentinaUshuaia Loppet42 kmUshuaia,Argentina

Ski orienteering

[edit]
Main article:Ski orienteering
Olympic women's biathlon gold medalistsOlga Zaitseva andAndrea Henkel at the World Cup pursuit race inOberhof, 2013.

Ski orienteering is anorienteering discipline recognized by theInternational Orienteering Federation.[20] TheWorld Ski Orienteering Championships is organized every odd year and includes sprint, middle and long distance competitions, and aRelay for both men and women. TheWorld Cup is organized every even year.[20]Junior World Ski Orienteering Championships and World Masters Ski Orienteering Championships are organized annually.[20]

Biathlon

[edit]
Main article:Biathlon

Biathlon combines cross-country skiing andrifle shooting. Depending on the shooting performance, extra distance or time is added to the contestant's total running distance/time. For each shooting round, the biathlete must hit five targets; the skier receives a penalty for each missed target, which varies according to the competition rules; in any given competition one of the following penalties would apply:[21]

  • Skiing around a 150-metre (490 ft) penalty loop, which, depending on conditions, takes 20–30 seconds for elite athletes to complete.
  • Adding one minute to the skier's total time.
  • Use of an extra cartridge (placed at the shooting range) to hit the target; only three such extras are available for each round, and a penalty loop must be made for each target left standing.

Paralympic

[edit]
Main article:Paralympic cross-country skiing
Olena Iurkovska ofUkraine competing on cross-country sit-skis at the2010 Winter Paralympics.

Paralympic cross-country skiing is an adaptation ofcross-country skiing for athletes with disabilities. Paralympic cross-country skiing is one of twoNordic skiing disciplines in theWinter Paralympic Games; the other isbiathlon. Competition is governed by theInternational Paralympic Committee (IPC). Paralympic cross-country skiing includes standing events, sitting events (for wheelchair users), and events for visually impaired athletes under the rules of the International Paralympic Committee. These are divided into several categories for people who are missing limbs, have amputations, are blind, or have any other physical disability, to continue their sport. The classifications are for:[22]

  • Standing skiers with arm impairments, leg impairments or with both arm and leg impairments.
  • Sit-Skiers, all with leg impairments, but with varying degrees of torso control.
  • Skiers with visual impairment including blindness, low visual acuity, and limited field of vision.

Technique and equipment

[edit]
Jörgen Brink skis with classic, diagonal-stride technique uphill in track atHolmenkollen in 2007.

Cross-country ski competitors employ one of two techniques, according to the event: classic and skating (in freestyle races, where all techniques are allowed).[5]Skiathlon combines the two techniques in one race.[23]

Skis are lighter, narrower and designed to be faster than those used inrecreational cross-country skiing and made ofcomposite materials.[1] For classic events, typical ski lengths are between 195 and 210 centimetres, while ski lengths for skating are 170 to 200 cm.[12] Skis for skating are also more rigid than skis for classical.[5] Skis arewaxed for speed and, in the case of classic skis, traction when striding forward. Racingski boots are also lighter than recreational ones and are attached at the toe only tobindings that are specialized for classic or skate skiing.

Racing ski poles are usually made fromcarbon fiber and feature smaller, lighter baskets thanrecreational poles. Poles designed for skating are longer than those designed for classic skiing.[24]

Classic

[edit]

In classic cross-country skiing the skis remain parallel, as the skier strides straight ahead. The undersides of the skis have a grip section in the middle treated with a specialski wax that provides friction when the foot is still, yet glides when the foot is in motion, while the rest of the ski bottom has aglide wax. Classic events occur on courses with tracks set by a grooming machine at precise intervals and with carefully planned curvature. Both poles may be used simultaneously ("double-poling") or with alternating foot and arm extended (as with running or walking) with the pole pushing on the side opposite of the extended, sliding ski. In classic skiing the alternating technique is used for the "diagonal stride"—the predominant classic sub-technique.[25] In diagonal-stride legs move like in ordinary walking, but with longer and more powerful steps. Diagonal is useful on level ground and on gentle uphill slopes. Uphill steps are shorter and more frequent. With double-poling both poles are used simultaneously for thrust, which may be augmented with striding. Double-poling is useful on level ground and on gentle downhill slopes. On steep uphills fishbone technique can be used.[5]

Skating

[edit]
Main article:Skating techniques
Michal Malák skate skis at a qualifier for theTour de Ski, 2007.

While skate skiing, the skier provides propulsion on a firm snow surface by pushing alternating skis away from one another at an angle, in a manner similar toice skating. Skis are waxed with a glide wax over their entire length, making them faster than classic skis. Freestyle events take place on smooth, wide, specially groomed courses. With the skating technique double-poling is usually employed with alternating skating strides or with every skate stride. The following table puts these poling sequences into order according to the speed achieved as a progression of "gears". In the lowest gear (rarely used in racing), one is poling on the side of the sliding ski, similar to diagonal stride. In the highest gear, the athlete skates without poles.[25] There are equivalent terms in other languages; for example in Norwegian, skating is likened to paddling or dancing, depending on the tempo.[5]

Skate-skiing terminology
"Gear"Term used in the US[26]Term used in Canada[27]
1stDiagonal V: single pole on stationary sideDiagonal skate
2ndV1: Double pole on same sideOffset skate
3rdV2: Double pole on alternate sides1-skate
4thV2 alternate (open field skate)2-skate
5thSkate without polesFree-skate

The primary turns used for racing, are theparallel turn, which is used while descending and can provide braking, and the step turn, which is used for maintaining speed during descents or out of track on flats.[28] Thewedge turn (or "snowplow turn"),[28] is sometimes used for braking and turning.

Skier development and training

[edit]
Dry-land training and racing with roller skis

Countries with cross-country ski teams usually have a strategy for developing promising athletes and programs to encourage participation in the sport, starting at a young age. One example is Cross-Country Ski Canada's "Long-Term Athlete Development" program.[27] The program encompasses youth development, training, introduction to competition and improvement of promising athletes with an emphasis on "stamina (endurance), strength, speed, skill and suppleness (flexibility)". It covers age groups from toddlers to mature adults, who are able to enjoy and participate in the sport.[27] Similarly, the USSA has an outline of "Cross Country Athlete Competencies" that has four phases beginning at 12 years old and under and addressing the 21 and older phase at the top. The program encompasses six "domains:"[26]

  • Technical skills specific to cross-country ski racing.
  • Physiological and motor skills addressing physical fitness, strength, power, and endurance.
  • Psychological and sociological skills, emphasizing sound relationships and the mental skills required for competition.
  • Training and competition performance, addressing goal-directed training to achieve favorable competition results.
  • Equipment selection, use, and maintenance of the athlete's skis, boots, bindings, wax, clothing, and poles necessary to success.
  • Education that eventually allows the athlete to become his or her own coach.

Ski training for the athlete depends on whether the desired specialty emphasizes endurance (marathon) or intensity (mid-distance events). The "intensity" theory of ski training uses stress to break down muscles and recovery to build them up stronger than before. In this theory, there are five levels ofintensity for training:[29][30]

  1. Aerobic: Low-intensity, aerobic training (at 60–70% of an athlete's maximum intensity) should consume most of the training hours for endurance athletes.[29]
  2. Strength: Strength training improves flexibility and joint motion to minimize injury and to improve overall strength, not addressed by sport-specific training.[29]
  3. Lactate Threshold: This level builds an efficient base speed by training the body to convert bloodlactate into energy, rather than creating a sensation of tired muscles.[30]
  4. VO2 max: This level usesinterval training to build the athlete'sVO2 max—volume of oxygen that the lungs pass into the musculature via the cardiovascular system.[30]
  5. Speed: This level of training addresses the athlete's ability to sprint and is neuromuscular, essentially training the muscles to move quickly.[30]

Athletes train for each level on a seasonal schedule designed for the targeted events: marathon or mid-distance.[30] Additional aspects of training address aerobic (low-intensity) exercise—especially for endurance—and strength to improve joint flexibility and to minimize the risk of injury.[30] Cross-country ski training occurs throughout the year, including on dry land where athletes engage inroller skiing and ski striding to maintain ski-specific muscle fitness.[31]

Athletes in competitions usually benefit from a low body weight, therefore there is have a high risk of being affected byeating disorders during training and preparation.[32][33] The problem is especially eminent among junior athletes,[34][35][36] but also many world class competitors talked in public about the risk and personal experiences.[37][38][39][40][41][42][43][44][45][46][47] A critical observer from science isJorunn Sundgot-Borgen.[37][48]

Race management

[edit]
Event celebration with a podium ceremony is part of race management.

In its "Organizing committee handbook", the FIS covers aspects of race management, including the layout of the competition venue, organization of the events (including scheduling, officiating, and awards), and addressing ancillary factors, such as the role of the media.[49] National handbooks, such as the "USSA Cross-Country Technical Handbook"[50] and the "Cross Country Canada officials manual",[51] provide further guidance, sometimes specific to their venues.

An important aspect of race preparation isgrooming the course to provide a surface for skate-skiing and setting tracks for classic events. This takes into account snow physics, methods for packing snow and surface shaping, and the equipment used for these functions. Also key is the layout of grooming and track setting in the stadium with various formats for starts, finishes and intermediate functions for relays and pursuits.[51]

Design of racing venues

[edit]
A cross-country skiing stadium was part of the racing venue at the Lahti Ski Games 2010.

In its "Cross-country homologation manual", the FIS recognizes that fans of the sport wish to follow it on television. With this in mind, the manual addresses how to design therace course and the stadium in a manner that not only enhances the experience of spectators, but of viewers, as well—not just to show the athletes in action, but to show the ways in which fans enjoy the action. The manual includes considerations of:[52]

  • Course design criteria
  • Requirements for different race formats
  • Course layouts
  • Courses for skiers with disabilities
  • Stadium layout
  • Waxing rooms with ski test areas
  • Warm up course

A course is expected to test the skier's technical and physical abilities, to be laid out in a manner that takes advantage of the natural terrain, and to provide smooth transitions among uphills, downhills and "undulating" terrain—distributed approximately evenly among the three. The manual advocates that courses present a variety of uphills, varying in lengths and gradients between 6% and 12%, which are arrayed efficiently within the venue. It cites two types of stadium, the horseshoe (preferred for television) and the "ski in, ski out" layout. It emphasizes the importance of accommodating television coverage at the start, finish, and exchange zones for equipment or relays. In addition, television coverage requires a variety of facilities to support the activities of the press.[52]

Climate change is causing venues, accustomed to natural snow, to rely increasingly onman-made snow to provide the grooming surface on the race course. Such snow tends to be denser and icier than natural snow, which increases the speed of skiers, especially on downhills. With the increase of speed and a harder surface, comes the increased risk of injuries from falls. The FIS claims to be compiling data on the comparative frequency and severity of falls, but wasn't sharing the information, as of January 2022.[53]

Doping

[edit]

As with other sports, some competitors in cross-country skiing have chosen to enhance their performance throughdoping.[54] Anti-doping tests at the 2001 World Nordic skiing championships in Lahti, Finland revealed thatJari Isometsä,Janne Immonen and two other skiers from Finland's gold-medal relay team,Mika Myllylä andHarri Kirvesniemi, and two female skiers tested positive forhydroxyethyl starch (HES), ablood plasma expander usually used tocover up the use oferythropoietin (EPO). EPO boosts the oxygen-carrying capability ofhemoglobin. In addition, the team head coach left needles and drip bags at a public location near theHelsinki airport.[55]

At theSochi Winter Olympic Games, Austrian cross-country skierJohannes Dürr was ejected from competition after testing positive for the blood booster EPO.[56] In 2007, The International Olympic Committee banned biathletes,Wolfgang Perner andWolfgang Rottmann, and the cross-country skiers,Martin Tauber,Jürgen Pinter, Johannes Eder, Roland Diethart and Christian Hoffmann, from all future Olympic competition.[57] An Italian court found Tauber and Pinter not guilty in 2012.[58]

Skiers, who have tested positive for EPO or other performance-enhancing drugs, include (date of sanction):

NameCountryYear
Dominik BaldaufAustria2019
Roland DiethartAustria2007
Johannes DürrAustria2009, 2014
Johannes EderAustria2007
Max HaukeAustria2019
Christian HoffmannAustria2011
Harald WurmAustria2015
Karel TammjärvEstonia2020
Andreas VeerpaluEstonia2020
Janne ImmonenFinland2001
Jari IsometsäFinland2001
Aki KarvonenFinland1985
Harri KirvesniemiFinland2001
Arto KoivistoFinland1981
Juha LallukkaFinland2011
Eero MäntyrantaFinland1972
Mika MyllyläFinland2001
Milla SaariFinland2001
Virpi SarasvuoFinland2001
Tero SimiläFinland2014
Pertti TeurajärviFinland1982
Kaisa VarisFinland2003
Evi Sachenbacher-StehleGermany2014
Yevgeniy KoshevoyKazakhstan2011
Alexey PoltoraninKazakhstan2020
Therese JohaugNorway2016
Martin Johnsrud SundbyNorway2016
Kornelia KubińskaPoland2010
Natalya Baranova-MasalkinaRussia2002
Yuliya ChepalovaRussia2009
Olga DanilovaRussia2002
Yevgeny DementyevRussia2009
Irina KhazovaRussia2007
Larisa LazutinaRussia2002
Natalya MatveyevaRussia2009
Sergey ShiryayevRussia2007
Alyona SidkoRussia2009
Lyubov YegorovaRussia1997
Galina KulakovaSoviet Union1976
Johann MühleggSpain2002
Marina LisogorUkraine2014

Health risks

[edit]

Cross country skiing is known to be a sport with a low risk of injuries or accidents.[59] Kinds of injuries, who are mostly registered, are themedial tibial stress syndrome, problems with theachilles tendon, lower back pain (especially among young adult athletes), ankle ligamentsprains and fractures, muscle ruptures, knee ligament sprains and injuries of theulnar collateral ligament of thumb.[60]

Furthermore the physical exertions at low temperatures can causeasthma.[61]

For the risk of eating disorders seehere.

References

[edit]
  1. ^abKuzmin, Leonid (2006).Investigation of the most essential factors influencing ski glide(PDF) (Licentiate thesis). Luleå University of Technology. Archived fromthe original(PDF) on 8 February 2006. Retrieved20 October 2012.
  2. ^Huntford, Roland (November 2008).Two Planks and a Passion: The Dramatic History of Skiing. Bloomsbury Academic. p. 436.ISBN 978-1-84725-236-4.
  3. ^abBergsland, Einar (1946):På ski. Oslo: Aschehoug.
  4. ^abcBø, Olav:Skiing throughout history, translated by W. Edson Richmond. Oslo: Samlaget, 1993.
  5. ^abcdefghRolf Bryhn; Knut Are Tvedt, eds. (1990). "Kunnskapsforlagets idrettsleksikon".Kunnskapsforlagets idrettsleksikon (Encyclopedia of Sports). Oslo: Kunnskapsforlaget. p. 455.ISBN 82-573-0408-5.
  6. ^Brugge, Mette (20 December 2015)."Skistavens historie: Hjelpemiddel og bråkmaker".Aftenposten (in Norwegian). Oslo. p. 14. Retrieved22 December 2015.
  7. ^Vaage, Jacob:Norske ski erobrer verden. Oslo: Gyldendal, 1952.
  8. ^abField, Patrick; Corradini, Angelo (2007), Paal, Epp; Corradini, Angelo (eds.),"Wordloppet Anniversary Book—30 years of skiing around the world (Skating, Siitonen and Koch)"(PDF),Anniversary Book, World Loppet Ski Foundation, archived fromthe original(PDF) on 27 September 2015, retrieved1 April 2016
  9. ^"Marathon Skate".Cross Country Ski Tips and Information. XCSki.com. 2010. Retrieved4 January 2015.
  10. ^Robbins, Paul (11 January 1983)."Skier Bill Koch the winter after his cross-country championship".The Christian Science Monitor. Boston. Retrieved13 December 2015.
  11. ^abBengtsson, Bengt Erik."Cross-country skating: How it started".Skiing History Magazine. International Skiing History Association. Retrieved20 October 2014.
  12. ^ab"Cross Country Skiing Equipment and History". International Olympic Committee. Retrieved11 October 2014.
  13. ^"Which cross-country ski disciplines are in the Olympics?".Salomon. Archived fromthe original on 19 February 2022. Retrieved19 February 2022.
  14. ^abc"FIS History",About FIS, International Ski Federation, archived fromthe original on 7 August 2014, retrieved23 October 2014
  15. ^abDirectors (2015)."WL Rules and Regulations—Everything you need to know". Worldloppet Ski Federation. Archived fromthe original on 6 November 2015. Retrieved13 December 2015.
  16. ^"Ski Classics – vill göra långloppen mera populära". Längd. 30 November 2010. Archived fromthe original on 22 December 2015. Retrieved5 March 2015.
  17. ^Nilsson, David (2015)."Visma Ski Classics". Retrieved15 December 2015.
  18. ^"FIS Worldloppet Cup presented by Worldloppet—Rules". Worldloppet Ski Federation. 2015. Archived fromthe original on 16 April 2015. Retrieved15 December 2015.
  19. ^"What is Worldloppet?". Worldloppet Ski Federation. 2012. Retrieved23 October 2014.
  20. ^abcWebmaster (2011)."Ski Orienteering". International Orienteering Federation. Retrieved5 November 2014.
  21. ^IBU Congress (2012)."IBU Event and Competition Rules".Rules adopted by the 2012 10th Regular IBU Congress. International Biathlon Union. Archived fromthe original on 17 October 2014. Retrieved5 November 2014.
  22. ^IPC (2013)."Nordic Skiing Classification".IPC Cross-Country Skiing and Biathlon. International Paralympic Committee. Retrieved4 October 2014.
  23. ^"About Cross Country".US Ski Team. Archived fromthe original on 5 November 2014. Retrieved5 November 2014.
  24. ^Talesnick, Stan (March 1983).The Better Way to Go: Cross Country Skiing. Consolidated Amethyst Communications. p. 111.ISBN 978-0-920474-17-4.
  25. ^abRees, David (1981).Cross-country skiing: touring and competition (3d ed.). Toronto: Copp C. Pitman.ISBN 978-0-7730-4045-8.OCLC 300405310.
  26. ^abCross Country Competencies Task Force (2002)."Cross Country Athlete Competencies"(PDF).Development resources. United States Ski and Snowboard Association. Archived fromthe original(PDF) on 6 February 2014. Retrieved5 November 2014.
  27. ^abcRees, Dave (2007)."Cross-Country Skiing—A Sport For Life". Cross Ski Country Canada. Retrieved9 November 2014.
  28. ^abPSIA Standards Committee (June 2014)."Cross Country Certification Standards 2014"(PDF). Professional Ski Instructors of America. Archived fromthe original(PDF) on 21 April 2015. Retrieved22 October 2014.
  29. ^abcFish, Bryan (December 2008). "Plan your training".Training Tips from CXC. Cross Country Skier.
  30. ^abcdefKuzzy, Garrott (December 2008). "Intensity training".Cross Country Skier.
  31. ^Hall, Marty (March 1982).One Stride Ahead (5 ed.). Winchester Press. p. 237.ISBN 978-0-87691-331-4.
  32. ^Annette Bös (2003)."Frauen mit Eßstörungen im Ausdauersport"(PDF) (in German).Eberhard Karls Universität Tübingen. Retrieved7 September 2025.
  33. ^Martin Einsiedler (3 March 2021)."Untergewicht im Langlauf: Das Bleistifte-Rennen muss aufhören" (in German).tagesspiegel.de. Retrieved7 July 2025.
  34. ^"Blodprøver tyder på spiseforstyrrelser" (in Norwegian).Dagbladet. 31 December 2021. Retrieved19 July 2025.
  35. ^Rachel Perkins (2 May 2022)."Hannah Halvorsen Studies Eating Disorders in Cross-Country Skiing from the Coaches' Perspective". fasterskier.com. Retrieved19 July 2025.
  36. ^Ingvild Pettersen, Erik Hernæs, Finn Skårderud (19 July 2016)."Pursuit of performance excellence: a population study of Norwegian adolescent female cross-country skiers and biathletes with disordered eating".BMJ Open Sport & Exercise Medicine.2 (1) e000115.United States National Library of Medicine.doi:10.1136/bmjsem-2016-000115.PMC 5117075.PMID 27900180.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  37. ^abMikal Emil Aaserud (7 December 2018)."NIH-professor slår full alarm om spiseforstyrrelser i langrenn" (in Norwegian).NRK. Retrieved19 July 2025.
  38. ^"Gewicht "grenzwertig": Olympiasiegerin sorgt sich um Magersucht-Probleme" (in German). n-tv.de. 29 April 2023. Retrieved7 July 2025.
  39. ^Birger Løfaldli (9 June 2023)."Vondt tema. Dessverre er det fortsatt høyaktuelt" (in Norwegian).aftenposten.no. Retrieved2 August 2025.
  40. ^"Zwei Langlauf-Stars zum eigenen Schutz gesperrt" (in German). blick.ch. 31 December 2019. Retrieved8 July 2025.
  41. ^"Langlauf-New aus Norwegen: Bjoergen, Northug und Essstörungen" (in German). www.xc-ski.de. 16 December 2011. Retrieved7 July 2025.
  42. ^"Ski(d)nytt snakker om spiseforstyrrelser og får besøk av Emilie fleten" (in Norwegian). langrenn.com. 20 October 2021. Retrieved19 July 2025.
  43. ^Bryan Armen Graham (27 March 2024)."Jessie Diggins: 'Eating disorders are about control when you feel like you have none'".theguardian.com. Retrieved8 July 2025.
  44. ^"Langlauf-Star Therese Johaug enthüllt Essstörung - Karriere auf der Kippe: "Vielleicht nie wieder Rennen gelaufen"" (in German).Eurosport. 19 March 2025. Retrieved7 July 2025.
  45. ^"Französische Langlauf-Hoffnung beendet Karriere mit nur 22 Jahren - emotionaler Abschiedsbrief über Probleme und Magersucht" (in German). eurosport.de. 8 April 2025. Retrieved7 July 2025.
  46. ^"Legende kanzelt Bundestrainer ab" (in German).Sport1. 4 March 2021. Retrieved7 July 2025.
  47. ^Anders Skjerdingstad, Carl Andreas Wold (6 May 2019)."Bjørgen ber voksne gripe inn mot spiseforstyrrelser: – Vanskelig å ta den første praten" (in Norwegian). nrk.no. Retrieved2 August 2025.
  48. ^"En langsom krise i langrennssporten og norsk toppidrett?"(PDF) (in Norwegian).Copenhagen Business School. 15 May 2023. Retrieved19 July 2025.
  49. ^FIS Cross-Country Committee (2011)."Organizing committee manual"(PDF).Cross-Country World Cup. International Ski Federation. Archived fromthe original(PDF) on 25 November 2014. Retrieved9 November 2014.
  50. ^USSA (2004)."USSA Cross-Country Technical Handbook"(PDF). U.S. Ski and Snowboard Association. Archived fromthe original(PDF) on 9 November 2014. Retrieved9 November 2014.
  51. ^abThomson, Jim, ed. (November 2009)."Cross Country Canada officials manual".Version 3.4. Cross Country Canada. Retrieved9 November 2014.
  52. ^abFIS Cross-Country Committee (2012)."Cross-country homologation manual"(PDF) (6 ed.). International Ski Federation. Archived fromthe original(PDF) on 20 February 2014. Retrieved8 November 2014.
  53. ^Bellisle, Martha (11 January 2022)."Climate change: Athletes flag the dangers of manmade snow".AP NEWS.Archived from the original on 11 January 2022. Retrieved12 January 2022.
  54. ^Culpepper, Chuck (12 February 2014)."Denial coaching". Sports on Earth. Archived fromthe original on 12 February 2014. Retrieved9 November 2014.
  55. ^Seiler, Stephen (2001)."Doping Disaster for Finnish Ski Team: a Turning Point for Drug Testing?".News & Comment / Sports Medicine. SportScience. Retrieved9 November 2014.
  56. ^"Austrian cross-country skier kicked out of Olympics for doping".Fox News. Sports. 23 February 2014. Retrieved9 November 2014.
  57. ^Kelso, Paul (25 April 2007)."Six Austrian Nordic skiers banned for life by IOC for blood-doping".The Guardian. Retrieved9 November 2014.
  58. ^Staff (6 July 2012)."Seks østerrikere frikjent, tre dømt etter OL-doping".www.langrenn.com (in Norwegian). langrenn.com. Retrieved20 February 2019.
  59. ^"Wintersportarten im Risiko-Check" (in German).sueddeutsche.de. 19 October 2021. Retrieved7 July 2025.
  60. ^P. Renstrom, R. J. Johnson (1989). "Cross-country skiing injuries and biomechanics".Sports Medicine (Auckland, N.Z.).8 (6).PubMed:346–370.doi:10.2165/00007256-198908060-00004.PMID 2694282.
  61. ^Florian Haupt, Jonas Kraus (22 March 2025)."Ein Land im Sturzflug" (in German).spiegel.de. Retrieved7 July 2025.

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