Nikolai Baastrup Nordsborg

Nikolai Baastrup Nordsborg

Head of Department

ORCID: 0000-0001-7077-9265

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  1. Published

    "Live High-Train High" increases hemoglobin mass in Olympic swimmers

    Bonne, T. C., Lundby, C., Jørgensen, S., Johansen, L., Mrgan, M., Bech, S. R., Sander, M., Papoti, M. & Nordsborg, Nikolai Baastrup, 2014, In: European Journal of Applied Physiology. 114, 7, p. 1439-1449 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    "Live high-train low" using normobaric hypoxia: a double-blinded, placebo-controlled study

    Siebenmann, C., Robach, P., Jacobs, R. A., Rasmussen, P., Nordsborg, Nikolai Baastrup, Diaz, V., Christ, A., Olsen, N. V., Maggiorini, M. & Lundby, C., 2012, In: Journal of Applied Physiology. 112, 1, p. 106-117 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    15 weeks of soccer training increases left ventricular mass and improves indices of left ventricular diastolic function in previously sedentary, mildly hypertensive, middle-aged women

    Sjúrðarson, Tórur, Kyhl, K., Nordsborg, Nikolai Baastrup, Kollslíð, R., Andersen, L. J., Krustrup, P. & Mohr, M., 2024, In: European Journal of Applied Physiology. 124, p. 1621–1629

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    A 3-min all-out upper-body ergometer test for competitive swimmers

    Nordsborg, Nikolai Baastrup, Aragón-Vela, J., Bonne, T. & Mohr, M., 2021, In: International Journal of Sports Medicine. 42, 8, p. 724-730 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    A single glucocorticoid injection accelerate erythropoiesis but does not improve performance

    Bejder, Jacob, Bonne, T. C., Breenfeldt Andersen, A., Sørensen, H. & Nordsborg, Nikolai Baastrup, 2022, In: F A S E B Journal. 36, Suppl. 1, 1 p., L7503.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  6. Published

    AI-based approach for improving the detection of blood doping in sports

    Rahman, M. R., Bejder, Jacob, Bonne, T. C., Breenfeldt Andersen, A., Huertas, J. R., Aikin, R., Nordsborg, Nikolai Baastrup & Maaß, W., 9 Feb 2022, arxiv.org, p. 1-7, 7 p.

    Research output: Working paper › Preprint › Research

  7. Published

    Acute hyperhydration reduces athlete biological passport OFF-hr score

    Bejder, Jacob, Hoffmann, M. F., Ashenden, M., Nordsborg, Nikolai Baastrup, Karstoft, K. & Mørkeberg, J. S., 2016, In: Scandinavian Journal of Medicine & Science in Sports. 26, 3, p. 338-347 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Adaptations to short, frequent sessions of endurance and strength training are similar to longer, less frequent exercise sessions when the total volume is the same

    Kilen, Anders, Hjelvang, L. B., Dall, N., Kruse, N. L. & Nordsborg, Nikolai Baastrup, 2015, In: Journal of Strength and Conditioning Research. 29 Suppl 11, Suppl. 11, p. S46-S51 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Adenosine A2B receptors modulate cAMP levels and induce CREB but not ERK1/2 and p38 phosphorylation in rat skeletal muscle cells

    Lynge, J., Schulte, G., Nordsborg, Nikolai Baastrup, Fredholm, B. B. & Hellsten, Ylva, 2003, In: Biochemical and Biophysical Research Communications. 307, 1, p. 180-187 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Altitude training causes haematological fluctuations with relevance for the Athlete Biological Passport

    Bonne, T. C., Lundby, C., Lundby, A. K., Sander, M., Bejder, Jacob & Nordsborg, Nikolai Baastrup, 2015, In: Drug Testing and Analysis. 7, 8, p. 655-662 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    An intramuscular injection of mixed testosterone esters does not acutely enhance strength and power in recreationally active young men

    Solheim, S. A., Mørkeberg, J., Juul, Anders, Freiesleben, S. Y., Upners, E. N., Dehnes, Y. & Nordsborg, Nikolai Baastrup, 2020, In: Frontiers in Physiology. 11, 11 p., 563620.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    An untargeted urine metabolomics approach for autologous blood transfusion detection

    Bejder, Jacob, Gürdeniz, G., Cuparencu, Catalina, Hall, F., Gybel-Brask, M., Andersen, A. B., Dragsted, Lars Ove, Secher, Niels H., Johansson, P. I. & Nordsborg, Nikolai Baastrup, 2021, In: Medicine and Science in Sports and Exercise. 53, 1, p. 236-243 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Analysis of dried blood spots is a feasible alternative for detecting ephedrine in doping control

    Solheim, S. A., Thomas, A., Ringsted, T. K., Thevis, M., Breenfeldt Andersen, A., Holm-Sørensen, H., Nordsborg, Nikolai Baastrup & Mørkeberg, J., 2022, In: Drug Testing and Analysis. 14, 10, p. 1685-1695 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Autologous blood transfusion enhances exercise performance - strength of the evidence and physiological mechanisms

    Solheim, S. A., Bejder, Jacob, Breenfeldt Andersen, A., Mørkeberg, J. & Nordsborg, Nikolai Baastrup, 2019, In: Sports Medicine - Open. 5, 11 p., 30.

    Research output: Contribution to journal › Review › Research › peer-review

  15. Published

    Beta2-adrenergic agonist clenbuterol increases energy expenditure and fat oxidation, and induces mTOR phosphorylation in skeletal muscle of young healthy men

    Jessen, Søren Kaare, Solheim, S. A., Jacobson, G. A., Eibye, K. H., Bangsbo, Jens, Nordsborg, Nikolai Baastrup & Hostrup, Morten, 2020, In: Drug Testing and Analysis. 12, 5, p. 610-618 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    Brain and skin do not contribute to the systemic rise in erythropoietin during acute hypoxia in humans

    Rasmussen, P., Nordsborg, Nikolai Baastrup, Taudorf, S., Sørensen, H., Berg, Ronan Martin Griffin, Jacobs, R. A., Bailey, D. M., Olsen, N. V., Secher, Niels H., Møller, Kirsten & Lundby, C., 2012, In: F A S E B Journal. 26, 5, p. 1831-1834 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Caffeine and bicarbonate for speed. A meta-analysis of legal supplements potential for improving intense endurance exercise performance

    Christensen, P. M., Shirai, Y., Ritz, C. & Nordsborg, Nikolai Baastrup, 2017, In: Frontiers in Physiology. 8, 16 p., 240.

    Research output: Contribution to journal › Review › Research › peer-review

  18. Published

    Central and peripheral blood flow during exercise with a continuous-flow left ventricular assist device: constant versus increasing pump speed: a pilot study

    Brassard, P., Jensen, A. S., Nordsborg, Nikolai Baastrup, Gustafsson, Finn, Møller, J. E., Hassager, Christian, Boesgaard, S., Hansen, P. B., Olsen, P. S., Sander, K., Secher, Niels H. & Madsen, Per, 2011, In: Circulation. Heart Failure. 4, 5, p. 554-560 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Cerebral lactate uptake during exercise is driven by the increased arterial lactate concentration

    Siebenmann, C., Sørensen, H., Bonne, T. C., Zaar, M., Aachmann-Andersen, N. J., Nordsborg, Nikolai Baastrup, Nielsen, H. B., Secher, Niels H., Lundby, C. & Rasmussen, P., 2021, In: Journal of Applied Physiology. 131, 6, p. 1824-1830 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    Cerebral water and ion balance remains stable when humans are exposed to acute hypoxic exercise

    Avnstorp, M. B., Rasmussen, P., Brassard, P., Seifert, T., Overgaard, M., Krustrup, P., Secher, Niels H. & Nordsborg, Nikolai Baastrup, 2015, In: High Altitude Medicine and Biology (Online). 16, 1, p. 18-25 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    Changes in blood parameters after intramuscular testosterone ester injections - Implications for anti-doping

    Solheim, S. A., Mørkeberg, J., Dehnes, Y., Hullstein, I., Juul, Anders, Upners, E. N. & Nordsborg, Nikolai Baastrup, 2020, In: Drug Testing and Analysis. 12, 8, p. 1019-1030 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Changes in human muscle oxygen saturation and mean fiber conduction velocity during intense dynamic exercise - effect of muscular training status

    Kilen, Anders, Gizzi, L., Jensen, B. R., Farina, D. & Nordsborg, Nikolai Baastrup, 2012, In: Muscle & Nerve. 46, 5, p. 746-754 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Changes in immature reticulocytes aid the indirect detection of microdose recombinant erythropoietin use in males and females

    Breenfeldt Andersen, A., Bejder, Jacob, Bonne, T. C., Graae, Jonathan, Seier, S. & Nordsborg, Nikolai Baastrup, 2023, In: Medicine and Science in Sports and Exercise. 55, 9, p. 1695-1705 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Contemporary blood doping: Performance, mechanism, and detection

    Breenfeldt Andersen, A., Nordsborg, Nikolai Baastrup, Bonne, T. C. & Bejder, Jacob, 2024, In: Scandinavian Journal of Medicine & Science in Sports. 34, 1, 15 p., e14243.

    Research output: Contribution to journal › Review › Research › peer-review

  25. Published

    Contraction induced changes in skeletal muscle Na+, K+ pump mRNA expression - importance of exercise intensity and Ca2+ mediated signalling

    Nordsborg, Nikolai Baastrup, Kusuhara, K., Hellsten, Ylva, Lyngby, S., Lundby, C., Madsen, K. & Pilegaard, Henriette, 2010, In: Acta Physiologica (Print Edition). 198, 4, p. 487-498 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Contraction-induced changes in skeletal muscle Na(+), K(+) pump mRNA expression - importance of exercise intensity and Ca(2+)-mediated signalling

    Nordsborg, Nikolai Baastrup, Kusuhara, K., Hellsten, Ylva, Lyngby, A. S. B., Lundby, C., Madsen, K. & Pilegaard, Henriette, 2010, In: Acta Physiologica (Print). 198, 4, p. 487-98

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Contraction-induced increases in Na+-K+-ATPase mRNA levels in human skeletal muscle are not amplified by activation of additional muscle mass

    Nordsborg, Nikolai Baastrup, Thomassen, Martin, Lundby, C., Pilegaard, Henriette & Bangsbo, Jens, 2005, In: American Journal of Physiology: Regulatory, Integrative and Comparative Physiology. 289, 1, p. R84-R91 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Detection of erythropoietin in blood to uncover doping in sports using machine learning

    Rahman, M. R., Bejder, Jacob, Bonne, T. C., Andersen, A. B., Huertas, J. R., Aikin, R., Nordsborg, Nikolai Baastrup & Maass, W., 2022, Proceedings - 2022 IEEE International Conference on Digital Health, ICDH 2022. Ahamed, S. I., Ardagna, C. A., Bian, H., Bochicchio, M., Chang, C. K., Chang, R. N., Damiani, E., Liu, L., Pavel, M., Priami, C., Shahriar, H., Ward, R., Xhafa, F., Zhang, J. & Zulkernine, F. (eds.). Institute of Electrical and Electronics Engineers Inc., p. 193-201 9 p. (IEEE International Conference on Digital Health, Vol. 2022).

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  29. Published

    Detection of erythropoietin misuse by the Athlete Biological Passport combined with reticulocyte percentage

    Bejder, Jacob, Aachmann-Andersen, N. J., Bonne, T. C., Olsen, N. V. & Nordsborg, Nikolai Baastrup, Oct 2016, In: Drug Testing and Analysis. 8, 10, p. 1049-1055 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Determinants of time trial performance and maximal incremental exercise in highly trained endurance athletes

    Jacobs, R. A., Rasmussen, P., Siebenmann, C., Díaz, V., Gassmann, M., Pesta, D., Gnaiger, E., Nordsborg, Nikolai Baastrup, Robach, P. & Lundby, C., 2011, In: Journal of Applied Physiology. 111, 5, p. 1422-1430 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Dexamethasone up-regulates skeletal muscle maximal Na+,K+ pump activity by muscle group specific mechanisms in humans

    Nordsborg, Nikolai Baastrup, Goodmann, C., McKenna, M. J. & Bangsbo, Jens, 2005, In: Journal of Physiology. 567, 2, p. 583-589 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    Directly measured aerobic fitness in male Maasai of Tanzania

    Christensen, Dirk Lund, Jørgensen, S. W., Koch, L. S., Nordsborg, Nikolai Baastrup, Sironga, J., Ramaiya, K. L., Larsen, Steen, Brage, S., Bygbjerg, Ib Christian, Maro, V. P. & Helge, Jørn Wulff, 2022, In: American Journal of Human Biology. 34, 4, 12 p., e23674.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Distribution of concurrent training sessions does not impact endurance adaptation

    Kilen, Anders, Bay, J., Bejder, Jacob, Breenfeldt Andersen, A., Bonne, T., Larsen, P., Carlsen, A., Egelund, J., Nybo, Lars, Olsen, N. V., Aachmann-Andersen, N. J., Løvind Andersen, J. & Nordsborg, Nikolai Baastrup, 2021, In: Journal of Science and Medicine in Sport. 24, 3, p. 291-296 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    Does hypoxia and stress erythropoiesis compromise cardiac function in healthy adults? A randomized trial

    Arrebola-Moreno, A. L., Casuso, R. A., Bejder, Jacob, Bonne, T. C., Breenfeldt Andersen, A., Aragón-Vela, J., Nordsborg, Nikolai Baastrup & Huertas, J. R., 2022, In: Sports Medicine - Open. 8, 7 p., 137.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Does intermittent exposure to high altitude increase the risk of cardiovascular disease in workers? A systematic narrative review

    Aragón-Vela, J., Bejder, Jacob, Huertas, J. R., Plaza-Diaz, J. & Nordsborg, Nikolai Baastrup, 2020, In: B M J Open. 10, 11, 14 p., 041532.

    Research output: Contribution to journal › Review › Research › peer-review

  36. Published

    Duplicate measures of hemoglobin mass within an hour: feasibility, reliability, and comparison of three devices in supine position

    Breenfeldt Andersen, A., Bonne, T. C., Nordsborg, Nikolai Baastrup, Holm-Sørensen, H. & Bejder, Jacob, 2024, In: Scandinavian Journal of Clinical and Laboratory Investigation. 84, 1, p. 1-10

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Effect of acute hypobaric hypoxia on the endothelial glycocalyx and digital reactive hyperemia in humans

    Johansson, P. I., Bergström, A., Aachmann-Andersen, N. J., Meyer, M. A. S., Ostrowski, Sisse Rye, Nordsborg, Nikolai Baastrup & Olsen, N. V., 2014, In: Frontiers in Physiology. 5, 6 p., 459.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Effect of angiotensin-converting enzyme inhibition on cardiovascular adaptation to exercise training

    Sjúrðarson, Tórur, Bejder, Jacob, Breenfeldt Andersen, A., Bonne, T., Kyhl, K., Róin, T., Patursson, Poula, Oddmarsdóttir Gregersen, N., Skoradal, M., Schliemann, M., Lindegaard, M., Weihe, P., Mohr, M. & Nordsborg, Nikolai Baastrup, 2022, In: Physiological Reports. 10, 13, 13 p., e15382.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Effect of dexamethasone on skeletal muscle Na+,K+ pump subunit specific expression and K+ homeostasis during exercise in humans

    Nordsborg, Nikolai Baastrup, Ovesen, J., Thomassen, Martin, Zangenberg, M., Jøns, C., Iaia, F. M., Nielsen, Jens Jung & Bangsbo, Jens, 2008, In: Journal of Physiology. 586, 5, p. 1447-1459 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Effect of exercise on interstitial K+, fatigue development and Na+, K+ pump mRNA expression in human muscle

    Nordsborg, Nikolai Baastrup, 2005, Copenhagen: Institut for Idræt, Københavns Universitet. 79 p.

    Research output: Book/Report › Ph.D. thesis › Research

  41. Published

    Effect of high-intensity training on exercise-induced gene expression specific to ion homeostasis and metabolism

    Nordsborg, Nikolai Baastrup, Bangsbo, Jens & Pilegaard, Henriette, 2003, In: Journal of Applied Physiology. 95, 3, p. 1201-1206 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Effect of previous exhaustive exercise on metabolism and fatigue development during intense exercise in humans

    Iaia, F. M., Pérez-Gómez, J., Nordsborg, Nikolai Baastrup & Bangsbo, Jens, 2010, In: Scandinavian Journal of Medicine & Science in Sports. 20, 4, p. 619-629 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    Effects of 12 weeks high-intensity & reduced-volume training in elite athletes

    Kilen, Anders, Larsson, T. H., Jørgensen, M., Johansen, L., Jørgensen, S. & Nordsborg, Nikolai Baastrup, 2014, In: P L o S One. 9, 4, 8 p., e95025.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Effects of altitude and recombinant human erythropoietin on iron metabolism: a randomized controlled trial

    Breenfeldt Andersen, A., Bonne, T. C., Bejder, Jacob, Jung, G., Ganz, T., Nemeth, E., Olsen, N. V., Rodriguez Huertas, J. & Nordsborg, Nikolai Baastrup, 2021, In: American Journal of Physiology: Regulatory, Integrative and Comparative Physiology. 321, 2, p. R152-R161 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Effektiv træning - kort og godt

    Nordsborg, Nikolai Baastrup & Bangsbo, Jens, 2007, In: CPH Sport. Nov., p. 8 1 p.

    Research output: Contribution to journal › Journal article › Communication

  46. Published

    Endurance, aerobic high-intensity, and repeated sprint cycling performance is unaffected by normobaric "Live High-Train Low": a double-blind placebo-controlled cross-over study

    Bejder, Jacob, Andersen, A. B., Buchardt, R., Larsson, T. H., Olsen, N. V. & Nordsborg, Nikolai Baastrup, 2017, In: European Journal of Applied Physiology. 117, 5, p. 979-988 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    EpoR stimulates rapid cycling and larger red cells during mouse and human erythropoiesis

    Hidalgo, D., Bejder, Jacob, Pop, R., Gellatly, K., Hwang, Y., Scalf, S. M., Eastman, A. E., Chen, J., Zhu, L. J., Heuberger, J. A. A. C., Guo, S., Koury, M. J., Nordsborg, Nikolai Baastrup & Socolovsky, M., 2021, In: Nature Communications. 12, 17 p., 7334.

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    Erythropoietin does not reduce plasma lactate, H+, and K+ during intense exercise

    Nordsborg, Nikolai Baastrup, Robach, P., Boushel, R., Calbet, J. A. L. & Lundby, C., 2015, In: Scandinavian Journal of Medicine & Science in Sports. 25, 6, p. e566-e575 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    Erythropoietin on cycling performance

    Bejder, Jacob, Nybo, Lars, Sawka, M. N., Joyner, M. J. & Nordsborg, Nikolai Baastrup, 2017, In: The Lancet Haematology. 4, 10, p. e459-e460 2 p.

    Research output: Contribution to journal › Comment/debate › Research

  50. Published

    Estimating energy expenditure during front crawl swimming using accelerometers

    Nordsborg, Nikolai Baastrup, Espinosa, H. G. & Van Thiel, D. H., 2014, In: Procedia Engineering. 72, p. 132-137 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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