Jacob Bejder

Jacob Bejder

Assistant Professor

ORCID: 0000-0002-9698-9188

Publication year:
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1 - 50 out of 50Page size: 100
  1. 2024
  2. 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

  3. Published

    Determinants and reference values for blood volume and total hemoglobin mass in women and men

    Oberholzer, L., Montero, D., Robach, P., Siebenmann, C., Ryrsøe, C. K., Bonne, T. C., Breenfeldt Andersen, A., Bejder, Jacob, Karlsen, T., Edvardsen, E., Rønnestad, B. R., Hamarsland, H., Cepeda-Lopez, A. C., Rittweger, J., Treff, G., Ahlgrim, C., Almquist, N. W., Hallén, J. & Lundby, C., 2024, In: American Journal of Hematology. 99, 1, p. 88-98 11 p.

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

  4. 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

  5. Accepted/In press

    mRNA biomarkers sensitive and specific to micro-dose erythropoietin treatment at sea level and altitude

    Loria, F., Breenfeldt Andersen, A., Bejder, Jacob, Bonne, T., Grabherr, S., Kuuranne, T., Leuenberger, N. & Nordsborg, Nikolai Baastrup, 2024, (Accepted/In press) In: Drug Testing and Analysis.

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

  6. 2023
  7. Published

    A semi-automated device rapidly determine circulating blood volume in healthy males and carbon monoxide uptake kinetics of arterial and venous blood

    Breenfeldt Andersen, A., Baungaard, S. B., Bejder, Jacob, Graae, Jonathan, Hristovska, A., Agerskov, M., Holm-Sørensen, H. & Foss, Nicolai Bang, 2023, In: Journal of Clinical Monitoring and Computing. 37, 2, p. 437-447 11 p.

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

  8. 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

  9. Published

    Glucocorticoids accelerate erythropoiesis in healthy humans - should the use in sports be reevaluated?

    Nordsborg, Nikolai Baastrup, Bonne, T. C., Breenfeldt Andersen, A., Sørensen, H. & Bejder, Jacob, 2023, In: Medicine and Science in Sports and Exercise. 55, 7, p. 1334-1341 8 p.

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

  10. Published

    Microdoses of recombinant human erythropoietin enhance time trial performance in trained males and females

    Breenfeldt Andersen, A., Graae, Jonathan, Bejder, Jacob, Bonne, T. C., Seier, S., Debertin, M., Eibye, K., Hostrup, Morten & Nordsborg, Nikolai Baastrup, 2023, In: Medicine and Science in Sports and Exercise. 55, 2, p. 311-321 11 p.

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

  11. Published

    Moderate hypoxic exposure for 4 weeks reduces body fat percentage and increases fat-free mass in trained individuals: a randomized crossover study

    Bonne, T. C., Jeppesen, Jan Sommer, Bejder, Jacob, Breenfeldt Andersen, A., Olsen, N. V., Huertas, J. R. & Nordsborg, Nikolai Baastrup, 2023, In: Sleep and Breathing. 27, 4, p. 1611-1618 8 p.

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

  12. Published

    Robust arm and leg muscle adaptation to training despite ACE inhibition: a randomized placebo-controlled trial

    Sjúrðarson, Tórur, Bejder, Jacob, Breenfeldt Andersen, A., Bonne, T. C., Kyhl, K., Thomassen, Martin, Prats Quesada, Júlia, Oddmarsdóttir Gregersen, N., Skoradal, M., Weihe, P., Nordsborg, Nikolai Baastrup & Mohr, M., 2023, In: European Journal of Applied Physiology. 123, 2, p. 325-337 13 p.

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

  13. 2022
  14. 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

  15. 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

  16. Published

    Commentaries on Viewpoint: Consider iron status when making sex comparisons in human physiology: How to account for the potential sex-specific influence in iron status in human physiology

    Andersen, A. B., Bejder, Jacob & Gliemann, Lasse, 2022, In: Journal of Applied Physiology. 132, 3, p. 704-705 2 p.

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

  17. 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

  18. 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

  19. 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

  20. Published

    Hepcidin and erythroferrone complement the Athlete Biological Passport in the detection of autologous blood transfusion

    Andersen, A. B., Bejder, Jacob, Bonne, T. C., Sørensen, H., Sørensen, Helle, Jung, G., Ganz, T., Nemeth, E., Secher, Niels H., Johansson, P. I. & Nordsborg, Nikolai Baastrup, 2022, In: Medicine and Science in Sports and Exercise. 54, 9, p. 1604-1616 13 p.

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

  21. 2021
  22. Published

    An abductive inference approach to assess the performance-enhancing effects of drugs included on the World Anti-Doping Agency Prohibited List

    Breenfeldt Andersen, A., Jacobson, G. A., Bejder, Jacob, Premilovac, D., Richards, S. M., Rasmussen, J. J., Jessen, Søren Kaare & Hostrup, Morten, 2021, In: Sports Medicine. 51, 7, p. 1353-1376 24 p.

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

  23. 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

  24. 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

  25. 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

  26. 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

  27. Published

    Extreme hypoxia causing brady-arrythmias during apnea in elite breath-hold divers

    Kjeld, T., Isbrand, A. B., Linnet, K., Zerahn, B., Højberg, J., Hansen, E. G., Gormsen, L. C., Bejder, Jacob, Krag, T., Vissing, John, Bøtker, H. E. & Arendrup, H. C., 2021, In: Frontiers in Physiology. 12, 12 p., 712573.

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

  28. Published

    Hematological adaptations and detection of recombinant human erythropoietin combined with chronic hypoxia

    Bejder, Jacob, Andersen, A. B., Bonne, T. C., Linkis, J., Olsen, N. V., Huertas, J. R. & Nordsborg, Nikolai Baastrup, 2021, In: Drug Testing and Analysis. 13, 2, p. 360-368 9 p.

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

  29. Published

    Immature reticulocytes are sensitive and specific to low-dose erythropoietin treatment at sea level and altitude

    Jeppesen, Jan Sommer, Breenfeldt Andersen, A., Bonne, T. C., Thomassen, Martin, Sørensen, Helle, Nordsborg, Nikolai Baastrup, Olsen, N. V., Huertas, J. R. & Bejder, Jacob, 2021, In: Drug Testing and Analysis. 13, 7, p. 1331-1340 10 p.

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

  30. Published

    Reliability and validity of the SHFT running power meter

    Linkis, J. E., Bonne, T. C., Bejder, Jacob, Rasmussen, E. K., Breenfeldt Andersen, A. & Nordsborg, Nikolai Baastrup, 2021, In: Sensors. 21, 22, 9 p., 7516.

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

  31. 2020
  32. 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

  33. Published

    Impact of low-volume concurrent strength training distribution on muscular adaptation

    Kilen, Anders, Bay, J., Bejder, Jacob, Andersen, A. B., Bonne, T. C., Larsen, P. D., Carlsen, A., Egelund, J., Nybo, Lars, Mackey, Abigail, Olsen, N. V., Aachmann-Andersen, N. J., Andersen, J. L. & Nordsborg, Nikolai Baastrup, 2020, In: Journal of Science and Medicine in Sport. 23, 10, p. 999-1004 6 p.

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

  34. Published

    Low doses of recombinant human erythropoietin does not affect C-terminal FGF23 in healthy men

    Bejder, Jacob, Robach, P., Lundby, A., Cornu, C., Sallet, P., Cairo, G. & Lundby, C., 2020, In: Drug Testing and Analysis. 12, 7, p. 975-979 5 p.

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

  35. Published

    Repeated Wingate sprints is a feasible high-quality training strategy in moderate hypoxia

    Andersen, A. B., Bejder, Jacob, Bonne, T. C., Olsen, N. V. & Nordsborg, Nikolai Baastrup, 2020, In: P L o S One. 15, 11, 13 p., e0242439.

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

  36. Published

    Reproducibility of the CO rebreathing technique with a lower CO dose and a shorter rebreathing duration at sea level and at 2320 m of altitude

    Oberholzer, L., Bonne, T. C., Breenfeldt Andersen, A., Bejder, Jacob, Højgaard Christensen, R., Nordsborg, Nikolai Baastrup & Lundby, C., 2020, In: Scandinavian Journal of Clinical & Laboratory Investigation. 80, 7, p. 590-599 10 p.

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

  37. Published

    The central blood volume as measured by thoracic electrical impedance and plasma proANP is not compromised by donation of 900 mL of blood in men

    Gybel-Brask, M., Nordsborg, Nikolai Baastrup, Goetze, Jens P. , Johansson, P. I., Secher, Niels H. & Bejder, Jacob, 2020, In: Transfusion Medicine. 30, 6, p. 450-455 6 p.

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

  38. Published

    Tramadol does not improve performance or impair motor function in trained cyclists

    Bejder, Jacob, Andersen, A. B., Bonne, T. C., Piil, Jacob Feder, Hagen, L. C. H., Dehnes, Y., Eibye, K. H., Nybo, Lars & Nordsborg, Nikolai Baastrup, 2020, In: Medicine and Science in Sports and Exercise. 52, 5, p. 1169-1175 7 p.

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

  39. 2019
  40. 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

  41. Published

    Detection and Physiological Effects of Blood Volume Manipulations

    Bejder, Jacob, 2019, Copenhagen: Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen. 80 p.

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

  42. Published

    Physiological determinants of elite mountain bike cross-country Olympic performance

    Bejder, Jacob, Bonne, T. C., Nyberg, M. P., Sjøberg, K. A. & Nordsborg, Nikolai Baastrup, 2019, In: Journal of Sports Sciences. 37, 10, p. 1154-1161 8 p.

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

  43. Published

    Response

    Bejder, Jacob, Andersen, A. B., Solheim, S. A. & Nordsborg, Nikolai Baastrup, 2019, In: Medicine and Science in Sports and Exercise. 51, 7, p. 1569 1 p.

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

  44. Published

    Time trial performance is sensitive to low-volume autologous blood transfusion

    Bejder, Jacob, Andersen, A. B., Solheim, S. A., Gybel-Brask, M., Secher, Niels H., Johansson, P. I. & Nordsborg, Nikolai Baastrup, 2019, In: Medicine and Science in Sports and Exercise. 51, 4, p. 692-700 9 p.

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

  45. 2018
  46. Published

    Oxygen conserving mitochondrial adaptations in the skeletal muscles of breath hold divers

    Kjeld, T., Stride, N., Gudiksen, Anders, Hansen, E. G., Arendrup, H. C., Horstmann, P. F., Zerahn, B., Jensen, Lars Thorbjørn, Nordsborg, Nikolai Baastrup, Bejder, Jacob & Halling, J. F., 19 Sep 2018, In: P L o S One. 13, 9, p. 1-13 13 p., e0201401.

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

  47. Published

    Legalisering af doping er uforsvarligt og praktisk umuligt

    Andersen, A. B., Rasmussen, J. J., Bejder, Jacob, Juul, A., Hostrup, Morten, Solheim, S. A., Bonne, T. C. & Nordsborg, Nikolai Baastrup, 29 Jul 2018, In: Berlingske. p. 24-25 2 p.

    Research output: Contribution to journal › Contribution to newspaper - Feature article › Communication

  48. Published

    Response

    Bejder, Jacob & Nordsborg, Nikolai Baastrup, 2018, In: Exercise and Sport Sciences Reviews. 46, 4, p. 272 1 p.

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

  49. Published

    Specificity of "Live High-Train Low" altitude training on exercise performance

    Bejder, Jacob & Nordsborg, Nikolai Baastrup, 2018, In: Exercise and Sport Sciences Reviews. 46, 2, p. 129-136 8 p.

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

  50. 2017
  51. 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

  52. 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

  53. Published

    Hypoxic dose, intensity distribution, and fatigue monitoring are paramount for "live high-train low"

    Bejder, Jacob & Nordsborg, Nikolai Baastrup, 2017, In: European Journal of Applied Physiology. 117, 10, p. 2121-2122 2 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

  54. Published

    Plasma volume reduction and hematological fluctuations in high-level athletes after an increased training load

    Bejder, Jacob, Andersen, A. B., Goetze, J. P., Aachmann-Andersen, N. J. & Nordsborg, Nikolai Baastrup, 2017, In: Scandinavian Journal of Medicine & Science in Sports. 27, 12, p. 1605-1615 11 p.

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

  55. 2016
  56. 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

  57. 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

  58. Published

    New insights for identification of doping with recombinant human erythropoietin micro-doses after high hydration

    Martin, L., Ashenden, M., Bejder, Jacob, Hoffmann, M., Nordsborg, Nikolai Baastrup, Karstoft, K., Mørkeberg, J. S., Sharpe, K., Lasne, F. & Marchand, A., 2016, In: Drug Testing and Analysis. 8, 11-12, p. 1119-1130 12 p.

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

  59. 2015
  60. 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

ID: 117950567