Journal articles: 'Elite orienteers'

1

Johansson, Christer. "Injuries in elite orienteers." American Journal of Sports Medicine 14, no. 5 (September 1986): 410–15. http://dx.doi.org/10.1177/036354658601400515.

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Smila, Baiba, and Andra Fernāte. "PARTICIPATION AND PERFORMANCES IN COMPETITIONS: LATVIAN ORIENTEERING DEVELOPMENT EVIDENCE." SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 3 (May 26, 2017): 395. http://dx.doi.org/10.17770/sie2017vol3.2378.

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Previous efforts to depict sport development opportunities resulted in a sport development metaphor, the participation pyramid (Sotiriadou, Shilbury & Quick, 2008). The base of the sport development metaphor represents the relationship between mass and elite participation (Shilbury, Sotiriadou & Green, 2008) and medals won during the Olympic Games (Sotiriadou, De Bosscher, 2013). The most important international competitions may, therefore, best represent overall sport systems (Sparvero, Chalip, & Green, 2008), but competition opportunities for athletes are the factor contributing to elite success. The aim of this study is to determine the relationship between mass and elite orienteers’ participation and elite orienteers’ performances at the most important national and international orienteering competitions. Methods: the official most important orienteering national and international competition results from 2001 to 2016 were obtained from the websites of each annual organizing committee, linked to the International Orienteering Federation website and mathematical statistics was conducted. The results confirmed a strong, medium and weak relationship between mass and elite orienteers’ participation and elite orienteers’ performances in the most important national and international orienteering competitions. Orienteers’ movement up the participation pyramid is not automatic.

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Newton, Jacqueline A., and Paul S. Holmes. "Psychological characteristics of champion orienteers: Should they be considered in talent identification and development?" International Journal of Sports Science & Coaching 12, no. 1 (December 20, 2016): 109–18. http://dx.doi.org/10.1177/1747954116684392.

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A range of cognitive skills that support the development of sport potential have been suggested to be important for athletes and coaches. This study explored performers’ psychological characteristics within orienteers. The psychological skills of World Elite orienteers and athletes in the National Junior Squads of both Great Britain and Switzerland were assessed using the six-factor Psychological Characteristics of Excellence Questionnaire. Data suggested that, as juniors, elite orienteers reported less support for long-term success than the Swiss juniors, perhaps because of the earlier adoption of self-coaching, but were not significantly different from either junior group on all other factors. British juniors were not significantly different from the other two groups on any factor. Follow-up qualitative approaches explored possible reasons for the World Elites’ early reliance on “self” rather than “other”, the role of the coach and the self-coaching phenomenon. The role of orienteering in developing these skills is also discussed along with unique psychological challenges faced by high performing orienteers.

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Lannergard, A., J. Fohlman, L. Wesslen, C. Rolf, and G. Friman. "Immune function in Swedish elite orienteers." Scandinavian Journal of Medicine and Science in Sports 11, no. 5 (October 2001): 274–79. http://dx.doi.org/10.1034/j.1600-0838.2001.110504.x.

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Johannsen, F., and B. Stallknecht. "Training, injuries and infections among elite orienteers." Scandinavian Journal of Medicine & Science in Sports 3, no. 4 (January 30, 2007): 273–78. http://dx.doi.org/10.1111/j.1600-0838.1993.tb00394.x.

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Gal‐Or, Yaakov, Gershon Tenenbaum, and Simon Shimrony. "Cognitive behavioural strategies and anxiety in elite orienteers." Journal of Sports Sciences 4, no. 1 (March 1986): 39–48. http://dx.doi.org/10.1080/02640418608732097.

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Schiellerup, Peter, Thomas Dyhr, Jean Marc Rolain, Marianne Christensen, Rasmus Damsgaard, Steen Ethelberg, Niels Fisker, Niels Frost Andersen, Didier Raoult, and Karen A. Krogfelt. "Low seroprevalence of Bartonella species in danish elite orienteers." Scandinavian Journal of Infectious Diseases 36, no. 8 (August 2004): 604–6. http://dx.doi.org/10.1080/00365540410017617.

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8

Henriksen, Egil, Johan Landelius, Lars Wesslén, Toomas Kangro, Tommy Jonason, Christina Nyström-Rosander, Urban Niklasson, et al. "An Echocardiographic Study Comparing Male Swedish Elite Orienteers With Other Elite Endurance Athletes." American Journal of Cardiology 79, no. 4 (February 1997): 521–24. http://dx.doi.org/10.1016/s0002-9149(96)00802-8.

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Lundqvist, Carolina, and Fredrik Sandin. "Well-Being in Elite Sport: Dimensions of Hedonic and Eudaimonic Well-Being Among Elite Orienteers." Sport Psychologist 28, no. 3 (September 2014): 245–54. http://dx.doi.org/10.1123/tsp.2013-0024.

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This study examined subjective (SWB), psychological (PWB) and social well-being (Social WB) at a global and sport contextual level among ten elite orienteers (6 women and 4 men, median age = 20.4, range 18–30) by employing semistructured interviews. Athletes described SWB as an interplay of satisfaction with life, sport experiences and perceived health combined with experienced enjoyment and happiness in both ordinary life and sport. SWB and PWB interacted, and important psychological functioning among the elite athletes included, among other things, abilities to adopt value-driven behaviors, be part of functional relationships, and to self-regulate one’s autonomy. The ability to organize and combine ordinary life with elite sport, and the use of strategies to protect the self during setbacks was also emphasized. For a comprehensive theoretical understanding of well-being applicable to elite athletes, the need for a holistic view considering both global and sport-specific aspects of WB is discussed.

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Hansen, Mette, Jens Bangsbo, Jørgen Jensen, Bo Martin Bibby, and Klavs Madsen. "Effect of Whey Protein Hydrolysate on Performance and Recovery of Top-Class Orienteering Runners." International Journal of Sport Nutrition and Exercise Metabolism 25, no. 2 (April 2015): 97–109. http://dx.doi.org/10.1123/ijsnem.2014-0083.

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This trial aimed to examine the effect of whey protein hydrolysate intake before and after exercise sessions on endurance performance and recovery in elite orienteers during a training camp. Eighteen elite orienteers participated in a randomized controlled intervention trial during a 1-week training camp (13 exercise sessions). Half of the runners (PRO-CHO) ingested a protein drink before (0.3 g kg−1) and a protein-carbohydrate drink after (0.3 g protein kg−1 and 1 g carbohydrate kg−1) each exercise session. The others ingested energy and timematched carbohydrate drinks (CHO). A 4-km run-test with 20 control points was performed before and on the last day of the intervention. Blood and saliva were obtained in the mornings, before and after run-tests, and after the last training session. During the intervention, questionnaires were fulfilled regarding psychological sense of performance capacity and motivation. PRO-CHO and not CHO improved performance in the 4-km run-test (interaction p < .05). An increase in serum creatine kinase was observed during the week, which was greater in CHO than PRO-CHO (interactionp < .01). Lactate dehydrogenase (p < .001) and cortisol (p = .057) increased during the week, but the change did not differ between groups. Reduction in sense of performance capacity during the intervention was greater in CHO (p < .05) than PRO-CHO. In conclusion, ingestion of whey protein hydrolysate before and after each exercise session improves performance and reduces markers of muscle damage during a strenuous 1-week training camp. The results indicate that protein supplementation in conjunction with each exercise session facilitates the recovery from strenuous training in elite orienteers.

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Damm, Andersson, Henriksen, Niklasson, Jonason, Ahrén, Wesslén, et al. "Wall motion abnormalities in male elite orienteers are aggravated by exercise." Clinical Physiology 19, no. 2 (February 1999): 121–26. http://dx.doi.org/10.1046/j.1365-2281.1999.00156.x.

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Rolf, C., G. Anderson, P. Westblad, and B. Saltin. "Aerobic and anaerobic work capacities and leg muscle characteristics in elite orienteers." Scandinavian Journal of Medicine & Science in Sports 7, no. 1 (January 30, 2007): 20–24. http://dx.doi.org/10.1111/j.1600-0838.1997.tb00112.x.

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HÉBERT-LOSIER, KIM, LAURENT MOUROT, and HANS-CHRISTER HOLMBERG. "Elite and Amateur Orienteers’ Running Biomechanics on Three Surfaces at Three Speeds." Medicine & Science in Sports & Exercise 47, no. 2 (February 2015): 381–89. http://dx.doi.org/10.1249/mss.0000000000000413.

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Colakoglu, T., F. Er, G. Ipekoglu, S. Karacan, F. F. Colakoglu, and E. Zorba. "Evaluation of Physical, Physiological and Some Performance Parameters of the Turkish Elite Orienteers." Procedia - Social and Behavioral Sciences 152 (October 2014): 403–8. http://dx.doi.org/10.1016/j.sbspro.2014.09.220.

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Friman, Göran, Lars Wesslén, Carl Phlson, Olle Lindquist, Erik Larsson, Jan Fohlman, Eva Hjelm, and Christer Johansson. "Sudden unexpected deaths in young Swedish elite orienteers—Is there an infectious aetiology?" Journal of Infection 28, no. 3 (May 1994): 348–49. http://dx.doi.org/10.1016/s0163-4453(94)93043-0.

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16

Bergström, Max, Mats Jong, and Stig Arve Sæther. "Orienteering from Cradle to Grave—How a Sport Could Offer Lifelong Participation." Social Sciences 10, no. 5 (April 21, 2021): 146. http://dx.doi.org/10.3390/socsci10050146.

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Background: The aim of this present study is to explore what makes orienteering meaningful and rewarding to former elite athletes’ years or even decades after ending their elite careers. Methods: Applying a qualitative approach with a case study design, data was collected through semi-structured interviews with 11 former elite orienteers from Norway and Sweden, and the data was subsequently analyzed with thematic analysis, resulting in two main themes: individually matched challenges and a social community. Results: The character, structure, and culture of orienteering both enabled and encouraged former elite athletes to make the transition into recreational sport. Even so, the characteristics of the sport related to both its structure (range of ages, level, and ambition) and organization (well-organized) as well as the participants’ backgrounds (well-educated) and intrinsic motivation (satisfaction, enjoyment, mastery) seemed to match a lifelong sport participation. Conclusions: These factors could indicate that orienteering is a sport that can facilitate a lifelong sport participation for athletes with such a background.

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Jensen, K., J. Franch, O. Kärkkäinen, and K. Madsen. "Field measurements of oxygen uptake in elite orienteers during cross-country running using telemetry." Scandinavian Journal of Medicine & Science in Sports 4, no. 4 (January 30, 2007): 234–38. http://dx.doi.org/10.1111/j.1600-0838.1994.tb00433.x.

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Okudan, Nilsel, Muaz Belviranli, Banu Kabak, Murat Erdogan, and Muharrem Karanfilci. "Perceptive Cognitive Skills of Elite Orienteers and Its Relation with Neurotrophic Factors and Myokines." Medicine & Science in Sports & Exercise 48 (May 2016): 841–42. http://dx.doi.org/10.1249/01.mss.0000487520.07074.54.

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19

Henriksen, Kangro, Jonason, Landelius, Hedberg, Ekstrand, and Ringqvist. "An echocardiographic study of right ventricular adaptation to physical exercise in elite male orienteers." Clinical Physiology 18, no. 6 (November 1998): 498–503. http://dx.doi.org/10.1046/j.1365-2281.1998.00130.x.

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20

Henriksen, E. "An echocardiographic study of right and left ventricular adaptation to physical exercise in elite female orienteers." European Heart Journal 20, no. 4 (February 1999): 309–16. http://dx.doi.org/10.1053/euhj.1998.1197.

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21

Svena McGill, Lars Wesslen, Eva Hje. "Serological and Epidemiological Analysis of the Prevalence of Bartonella spp. Antibodies in Swedish Elite Orienteers 1992-93." Scandinavian Journal of Infectious Diseases 33, no. 6 (January 2001): 423–28. http://dx.doi.org/10.1080/00365540152029882.

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22

Nilsson, Johnny, Asbjörn Gjerset, Egil Johansen, and Mikkel Lund. "Speed Adaptation in Cycle Duration and EMG During Running at Different Terrain and Ground Conditions." LASE Journal of Sport Science 5, no. 1 (June 1, 2014): 1–6. http://dx.doi.org/10.1515/ljss-2016-0020.

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Abstract The purpose was to study how important stride parameters such as the cycle duration, electromoygraphical (EMG) burst duration and activation level change with running speed and with change in terrain and ground conditions. In total six male regional to national level elite orienteers participated in the study. Mean (range), height and weight were 25 (19-32) years, 180 (1.74-1.88)m and 71 (67-75)kg. Hip joint angular displacement was determined by means of an electrogoniometer. The electrical activity in m. vastus lateralis (VL) of the right leg was recorded with bipolar surface electrodes taped over the belly of the muscles. Electrogoniometric and EMG data were recorded by means of a portable data logger at a rate of 1000 Hz. The time between markers in test intervals was recorded by means of an ultra sound based timing system (Time-it, Eleiko AB, Sweden). The participating orienteers performed, after a warming up period, runs on four different horizontal ground surfaces; gravel road, forest terrain (low density undergrowth), timber felling and wet moss. The recordings were done during running in four different constant self determined speeds: slow, medium, fast (competition speed) and maximum speed. The cycle duration decreased in a similar manner with speed during running in all the tested terrain conditions and gravel road. The burst duration of the knee extensor m. vastus lateralis showed the same trend as the change in cycle duration with speed. The same increasing trend in mean EMG activation level with speed is seen in all terrain conditions and gravel road. However, specific differences between terrain and surface conditions in cycle duration, burst duration and EMG amplitude were present.

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Araujo, Nayara Costa, Anibal Monteiro Magalhães Neto, Mahmi Fujimori, Miguel Sordi Bortolini, Allisson Benatti Justino, Adenilda Cristina Honorio-França, and Eduardo Luzía França. "Immune and Hormonal Response to High-intensity Exercise During Orienteering." International Journal of Sports Medicine 40, no. 12 (August 14, 2019): 768–73. http://dx.doi.org/10.1055/a-0970-9064.

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AbstractOrienteering is an endurance sport that combines physical and cognitive activity, during which the athlete must complete a course with several points distributed over unknown terrain in the shortest possible time. A number of studies have investigated the body’s physiological adaptations to the stress caused during competition, but not the immunological changes. To that end, the present study evaluated the immunological, physiological and pathological responses in athletes performing high-intensity physical exercise during an orienteering race. The 30 athletes tested belonged to the elite orienteering category and participated in the regional championship. Cortisol levels were determined before and after the competition to assess stress response, as were the cytokines IL-2, IL-4, IL-6, IL-10, TNF-α, IFN-γ and IL-17 to evaluate the immune response. Cortisol levels increased after the competition, indicating a stress condition. IFN-γ, IL-6 and IL-10 levels also rose post competition. The results indicate that orienteers are exposed to high stress levels, and that this condition affects their immune and endocrine systems, triggering a predominantly anti-inflammatory response, likely an athlete’s mechanism of adaptation to the stress imposed by high-intensity physical exercise.

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Wehrlin, Jon Peter, Peter Zuest, Jostein Hallén, and Bernard Marti. "Live high-train low for 24 days increases hemoglobin mass and red cell volume in elite endurance athletes." Journal of Applied Physiology 100, no. 6 (June 2006): 1938–45. http://dx.doi.org/10.1152/japplphysiol.01284.2005.

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The effect of live high-train low on hemoglobin mass (Hbmass) and red cell volume (RCV) in elite endurance athletes is still controversial. We expected that Hbmass and RCV would increase, when using a presumably adequate hypoxic dose. An altitude group (AG) of 10 Swiss national team orienteers (5 men and 5 women) lived at 2,500 m (18 h per day) and trained at 1,800 and 1,000 m above sea level for 24 days. Before and after altitude, Hbmass, RCV (carbon monoxide rebreathing method), blood, iron, and performance parameters were determined. Seven Swiss national team cross-country skiers (3 men and 4 women) served as “sea level” (500–1,600 m) control group (CG) for the changes in Hbmass and RCV. The AG increased Hbmass (805 ± 209 vs. 848 ± 225 g; P < 0.01) and RCV (2,353 ± 611 vs. 2,470 ± 653 ml; P < 0.01), whereas there was no change for the CG (Hbmass: 849 ± 197 vs. 858 ± 205 g; RCV: 2,373 ± 536 vs. 2,387 ± 551 ml). Serum erythropoietin ( P < 0.001), reticulocytes ( P < 0.001), transferrin ( P < 0.001), soluble transferrin receptor ( P < 0.05), and hematocrit ( P < 0.01) increased, whereas ferritin ( P < 0.05) decreased in the AG. These changes were associated with an increased maximal oxygen uptake (3,515 ± 837 vs. 3,660 ± 770 ml/min; P < 0.05) and improved 5,000-m running times (1,098 ± 104 vs. 1,080 ± 98 s; P < 0.01) from pre- to postaltitude. Living at 2,500 m and training at lower altitudes for 24 days increases Hbmass and RCV. These changes may contribute to enhance performance of elite endurance athletes.

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Tønnessen, Espen, Ida S. Svendsen, Bent R. Rønnestad, Jonny Hisdal, Thomas A. Haugen, and Stephen Seiler. "The Annual Training Periodization of 8 World Champions in Orienteering." International Journal of Sports Physiology and Performance 10, no. 1 (January 2015): 29–38. http://dx.doi.org/10.1123/ijspp.2014-0005.

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One year of training data from 8 elite orienteers were divided into a transition phase (TP), general preparatory phase (GPP), specific preparatory phase (SPP), and competition phase (CP). Average weekly training volume and frequency, hours at different intensities (zones 1–3), cross-training, running, orienteering, interval training, continuous training, and competition were calculated. Training volume was higher in GPP than TP, SPP, and CP (14.9 vs 9.7, 11.5, and 10.6 h/wk, P < .05). Training frequency was higher in GPP than TP (10 vs 7.5 sessions/wk, P < .05). Zone 1 training was higher in GPP than TP, SPP, and CP (11.3 vs 7.1, 8.3, and 7.7 h/wk, P < .05). Zone 3 training was higher in SPP and CP than in TP and GPP (0.9 and 1.1 vs 1.6 and 1.5 h/wk, P < .05). Cross-training was higher in GPP than SPP and CP (4.3 vs 0.8 h/wk, P < .05). Interval training was higher in GPP than TP, SPP, and CP (0.7 vs 0.3 h/wk, P < .05). High-intensity continuous training was higher in GPP than CP (0.9 vs 0.4 h/wk, P < .05), while competition was higher in SPP and CP than in TP and GPP (1.3 and 1.5 vs 0.6 and 0.3 h/wk, P < .01). In conclusion, these champion endurance athletes achieved a progressive reduction in total training volume from GPP to CP via a shortening of each individual session while the number of training sessions remained unchanged. This decrease in training volume was primarily due to a reduction in the number of hours of low-intensity, non-sport-specific cross-training.

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Macquet, Anne-Claire, David W. Eccles, and Etienne Barraux. "What makes an orienteer an expert? A case study of a highly elite orienteer's concerns in the course of competition." Journal of Sports Sciences 30, no. 1 (January 2012): 91–99. http://dx.doi.org/10.1080/02640414.2011.617774.

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SCHIELLERUP, P., T. DYHR, J. M. ROLAIN, M. CHRISTENSEN, R. DAMSGAARD, N. FISKER, N. F. ANDERSEN, D. RAOULT, and K. A. KROGFELT. "No Serological Evidence for Rickettsial Diseases among Danish Elite Orienteerers." Annals of the New York Academy of Sciences 1078, no. 1 (October 1, 2006): 150–53. http://dx.doi.org/10.1196/annals.1374.025.

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Hébert-Losier, K., K. Jensen, L. Mourot, and H. C. Holmberg. "The influence of surface on the running velocities of elite and amateur orienteer athletes." Scandinavian Journal of Medicine & Science in Sports 24, no. 6 (March 27, 2014): e448-455. http://dx.doi.org/10.1111/sms.12224.

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Foss, Ida Stange, Ingar Holme, and Roald Bahr. "The Prevalence of Low Back Pain Among Former Elite Cross-Country Skiers, Rowers, Orienteerers, and Nonathletes." American Journal of Sports Medicine 40, no. 11 (September 12, 2012): 2610–16. http://dx.doi.org/10.1177/0363546512458413.

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Background: Some cross-sectional studies have suggested that the prevalence of low back pain (LBP) may be high among endurance athletes with repetitive back loading, but there are no large, prospective cohort studies addressing this issue. Purpose: To compare the prevalence of symptoms of low back pain (LBP) among former endurance athletes with different loading characteristics on the lumbar region: cross-country skiing (flexion loading), rowing (extension loading), and orienteering (no specific loading), as well as a nonathletic control group. Study design: Cohort study; level of evidence, 2. Methods: Self-reported questionnaire on LBP adapted for sports based on standardized Nordic questionnaires for musculoskeletal symptoms. Responders were 173 rowers, 209 orienteerers, 242 cross-country skiers, and 116 control subjects (88% of the original cohort). Results: There were no group differences between the athletic groups and the control group with regard to the 2 main outcomes: reported LBP the previous 12 months ( P = .66) and frequent LBP the past year (>30 days with LBP) ( P = .14). More rowers than orienteerers reported frequent LBP the past year (adjusted OR = 2.32; CI, 1.02-5.28). Occupational changes due to LBP were reported more often by rowers (13%) than skiers (7%) and orienteerers (3%) ( P = .002). More rowers and skiers reported having received outpatient medical assistance than orienteerers or controls. A training volume >550 h/y was a risk factor for reporting LBP during the previous 12 months compared with a training volume <200 h/y (adjusted OR = 2.51; CI, 1.26-5.02). A previous episode with LBP was associated with LBP later in life (adjusted OR = 3.02; CI, 2.22-4.10). Conclusion: Low back pain was not more common among former endurance athletes with specific back loading compared with non-athletes. The results indicate that years of prolonged and repetitive flexion or extension loading in endurance sports does not lead to more LBP. However, a large training volume in the past year and previous episodes with LBP are risk factors for LBP. Comparing the sports of rowing, cross-country skiing, and orienteering, it appears that whereas orienteering is protective, rowing can provoke LBP.

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von Rosen, Philip, and Bodil Halvarsson. "Preventing lower extremity injury in elite orienteerers: study protocol for a randomised controlled trial." BMJ Open Sport & Exercise Medicine 4, no. 1 (April 2018): e000347. http://dx.doi.org/10.1136/bmjsem-2018-000347.

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BackgroundThe high physical load associated with running through uneven terrain contributes toorienteerers being exposed to high injury risk, where the majority of injuries are located in the lower extremities. Specific training programmes have been effective at reducing injury risk in sports. Yet no trial has been conducted in elite orienteering. The aim of this study is to investigate the effectiveness of a specific training programme in preventing lower extremity injury in adult elite orienteerers.Study designRandomised controlled trial (RCT).MethodsSeventy-two Swedish elite orienteerers, aged 18–40 years, are allocated to an intervention or control group. The intervention group performs four specific exercises, with three difficult levels intensified every second week over the first 4 weeks, targeting strength, flexibility and coordination of the lower extremity. The exercises are completed four times a week (10 min per session) in conjunction with normal training over 14 weeks. Injury data are collected every second week using a valid injury questionnaire distributed by text messages over 14 weeks. The primary outcome is number of substantial injuries in the lower extremity. The secondary outcomes are incidence of ankle sprains and the average substantial injury prevalence across 14 weeks.DiscussionDue to high injury risk and lack of injury prevention trials in orienteering, an RCT investigating the effect of a specific exercise programme in preventing lower extremity injury is warranted. The results of this trial will be beneficial to orienteerers, clubs and federations, and increase our understanding on how lower extremity injuries can be prevented in a physically challenging sport.Trial registration numberNCT03408925.

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Latinjak, Alexander Tibor, Raquel Font-Lladó, Nikos Zourbanos, and Antonis Hatzigeorgiadis. "Goal-Directed Self-Talk Interventions: A Single-Case Study With an Elite Athlete." Sport Psychologist 30, no. 2 (June 2016): 189–94. http://dx.doi.org/10.1123/tsp.2015-0120.

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The purpose of this single-case study was to describe a goal-directed self-talk (ST) intervention with an elite athlete. The participant was a 36-year-old elite orienteerer, who declared himself to be continuously engaged in some sort of autonomous self-dialogue. During six sessions, we undertook an intervention which started with identifying variety of relevant problematic sport situations and goal-directed ST in them. Subsequently, through questioning, the original ST was challenged and alternative instructions were theoretically examined before putting them into practice. The participant valued highly the intervention process and its outcomes. Overall, the study provides preliminary evidence on the effectiveness of goal-directed ST interventions and encourages research to further explore their potential.

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Wesslén, Lars, Carl Påhlson, Göran Friman, Jan Fohlman, Olle Lindquist, and Christer Johansson. "Myocarditis caused by Chlamydia pneumoniae (TWAR) and sudden unexpected death in a Swedish elite orienteer." Lancet 340, no. 8816 (August 1992): 427–28. http://dx.doi.org/10.1016/0140-6736(92)91509-7.

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Halvarsson, Bodil, and Philip von Rosen. "Could a specific exercise programme prevent injury in elite orienteerers? A randomised controlled trial." Physical Therapy in Sport 40 (November 2019): 177–83. http://dx.doi.org/10.1016/j.ptsp.2019.09.010.

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Leandersson, Jonas, Annette Heijne, Frida Flodström, Anna Frohm, and Philip von Rosen. "Can movement tests predict injury in elite orienteerers? An 1-year prospective cohort study." Physiotherapy Theory and Practice 36, no. 8 (September 10, 2018): 956–64. http://dx.doi.org/10.1080/09593985.2018.1513106.

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von Rosen, Philip, Annette I. L. M. Heijne, and Anna Frohm. "Injuries and Associated Risk Factors Among Adolescent Elite Orienteerers: A 26-Week Prospective Registration Study." Journal of Athletic Training 51, no. 4 (April 1, 2016): 321–28. http://dx.doi.org/10.4085/1062-6050-51.5.01.

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In orienteering, the number of injury-registration studies is limited. Most researchers have used a cross-sectional design during specific events and, therefore, have mainly identified acute injuries.Context: To determine the prevalence of injuries by registering acute and overuse injuries in adolescent elite orienteerers over 26 weeks and to study the variation of injury prevalence over the season and the potential risk factors.Objective: Cohort study.Design: Two high schools in Sweden with national orienteering teams.Setting: All athletes (33 adolescent girls, 31 adolescent boys; age = 17 ± 1 years) from 2 high schools with orienteering teams.Patients or Other Participants: We used a weekly Web-based questionnaire to identify the incidence and prevalence of injuries and training variables. Risk factors for injury were calculated using multiple linear regression techniques.Main Outcome Measure(s): The average weekly prevalence of overuse and acute injuries was 35.7% (95% confidence interval = 34.8%, 36.6%) and 1.7% (95% confidence interval = 1.3%, 2.1%), respectively; overuse injuries (78.0%, n = 85) accounted for the majority. The incidence of acute and overuse injuries was highest for the foot/lower leg (48.6%, n = 53), and 71.6% (n = 78) of all injuries affected the foot/lower leg and knee area. Time to the first reported injury was associated with training volume (β = 0.184, P = .001), competition time (β = −0.701, P = .009), running on asphalt roads (β = −0.348, P = .008), and running on forest surfaces and trails (β = −0.331, P = .007), with a model fit of r 2 = 0.50 (intercept = 2.196, P < .001). During the study, we observed a weekly increase (0.3%) in the prevalence of overuse injuries in the foot/lower leg (r 2 = 0.33, P = .001); the highest prevalence (26.9%) was at the beginning of the competitive season.Results: Overuse injuries, predominately in the foot/lower leg area, were more common than acute injuries in adolescent elite orienteerers. These injuries had the highest prevalence at the beginning of the competitive season; therefore, this period can be seen as a possible risk factor for sustaining overuse injuries in the foot/lower leg.Conclusions:

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Georgieva, Margarita. "Substantiation of the technical difficulties level of the competition distances for orienteer athletes of male and female «elite»." Uchenye zapiski universiteta imeni P.F. Lesgafta, no. 85 (March 2012): 61–65. http://dx.doi.org/10.5930/issn.1994-4683.2012.03.85.p61-65.

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Holm, Lars, and Nana Clemensen. "At lære sig "de kloge damers" sprog: Studerendes perspektiver på akademisk skrivning." Dansk Universitetspædagogisk Tidsskrift 12, no. 23 (October 3, 2017): 37–51. http://dx.doi.org/10.7146/dut.v12i23.23911.

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Mange steder i verden har universiteter gradvist forandret sig fra elite- til masse-institutioner. Også i Danmark har et stigende antal ”non-traditional students” (Lil-lis, 2001) affødt en tilsvarende interesse for akademisk skrivning, f. eks. i oprettel-sen af akademiske skrivecentre og udgivelsen af akademiske skrivehåndbøger. Med afsæt i en kvalitativ interviewundersøgelse, belyst i et sociokulturelt perspektiv på akademisk tekstproduktion, undersøger vi 12 studerendes erfaringer med konventioner for akademisk tekstproduktion på Pædagogisk Antropologi – en kandidatuddannelse, som overvejende optager professionsbachelorer. Studerendes erfaringer fra undervisning, opgaveskrivning og studiegrupper analyseres i et academic literacies-perspektiv (Lea & Street, 1998) med særlig vægt på begrebet writer identity (Ivanič, 1998). Undersøgelsen viser, hvordan de studerende generelt orienterer sig mod en autoritativ forståelse af akademisk tekstproduktion, som de selv har ringe indflydelse på. I forlængelse heraf argumenterer vi for en Bakhtinsk inspireret dialogisme (Lillis, 2003) som en mulighed for at åbne et mere demokratisk rum for såvel studerende som undervisere.

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Lassen, Tue A. H., Lars Lindstrøm, Simon Lønbro, and Klavs Madsen. "Increased Performance in Elite Runners Following Individualized Timing of Sodium Bicarbonate Supplementation." International Journal of Sport Nutrition and Exercise Metabolism, 2021, 1–7. http://dx.doi.org/10.1123/ijsnem.2020-0352.

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The present study investigated individualized sodium bicarbonate (NaHCO3−) supplementation in elite orienteers and its effects on alkalosis and performance in a simulated sprint orienteering competition. Twenty-one Danish male and female elite orienteers (age = 25.2 ± 3.6 years, height = 176.4 ± 10.9 cm, body mass = 66.6 ± 7.9 kg) were tested twice in order to identify individual time to peak blood bicarbonate (HCO3− peak) following supplementation of 0.3 g/kg body mass NaHCO3 with and without warm-up. The athletes also performed two 3.5 km time-trial runs (TT-runs) following individualized timing of NaHCO3 supplementation (SBS) or placebo (PLA) on separate days in a randomized, double-blind, cross-over design. The occurrence of individual peak HCO3− and pH ranged from 60 to 180 min. Mean HCO3− and pH in SBS were significantly higher compared with PLA 10 min before and following the TT-run (p < .01). SBS improved overall performance in the 3.5 km TT-run by 6 s compared with PLA (775.5 ± 16.2 s vs. 781.4 ± 16.1 s, respectively; p < .05). SBS improved performance in the last half of the TT-run compared with PLA (p < .01). In conclusion, supplementation with NaHCO3 followed by warm-up resulted in individualized alkalosis peaks ranging from 60 to 180 min. Individualized timing of SBS in elite orienteers induced significant alkalosis before and after a 3.5 km TT and improved overall performance time by 6 s, which occurred in the last half of the time trial. The present data show that the anaerobic buffer system is important for performance in these types of endurance events lasting 12–15 min.

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Journal articles on the topic 'Elite orienteers'

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