Author

P. K. Opstad

Observed names: Opstad P., P K Opstad, P K. Opstad, P Opstad, P. K. OPSTAD, P. OPSTAD, P. Opstad, P.-K. OPSTAD, P.K. Opstad, P.‐K. Opstad, PerK. Opstad, Perk K. Opstad

Institution: Norwegian Defence Research Establishment

Observed institutions: University of Copenhagen, Oslo University Hospital, Norwegian Defence Research Establishment, University of Oslo, Bispebjerg Hospital, Diakonhjemmet Hospital, Lovisenberg Diakonale Sykehus

OpenAlex ID: A5110144087

The Effect of Strenuous Exercise, Calorie Deficiency and Sleep Deprivation on White Blood Cells, Plasma Immunoglobulins and Cytokines

1996 · A. BØYUM, P. WIIK, et al. · Scandinavian Journal of Immunology · 152

Androgenic hormones during prolonged physical stress, sleep, and energy deficiency

1992 · P. K. Opstad · The Journal of Clinical Endocrinology & Metabolism · 129

Hormonal changes in serum in young men during prolonged physical strain

1978 · A. Aakvaag, T. Sand, et al. · European Journal of Applied Physiology · 127

Changes in the Gastrointestinal Mucosa after Long-Distance Running

1992 · O. Øktedalen, O. C. Lunde, et al. · Scandinavian Journal of Gastroenterology · 123

Glycine – an important neurotransmitter and cytoprotective agent

2005 · R. Y. Gundersen, P. Vaagenes, et al. · Acta Anaesthesiologica Scandinavica · 101

Moderate hypothermia blunts the inflammatory response and reduces organ injury after acute haemorrhage

2001 · Y. Gundersen, P. Vaagenes, et al. · Acta Anaesthesiologica Scandinavica · 66

Hypothalamic‐pituitary‐adrenal axis activation by experimental periodontal disease in rats

2001 · T. Breivik, P. S. Thrane, et al. · Journal of Periodontal Research · 59

Strenuous prolonged exercise elevates resting metabolic rate and causes reduced mechanical efficiency

1991 · R. Bahr, P. K. Opstad, et al. · Acta Physiologica Scandinavica · 52

The Thyroid Function in Young Men During Prolonged Exercise and the Effect of Energy and Sleep Deprivation

1984 · P. K. OPSTAD, D. FALCH, et al. · Clinical Endocrinology · 50

Glucocorticoid receptor antagonist RU 486 treatment reduces periodontitis in Fischer 344 rats

2000 · T. Breivik, P. S. Thrane, et al. · Journal of Periodontal Research · 42

Patterns of Peptides and Protein-Associated-Peptide Complexes in Psychiatric Disorders

1980 · O. E. Trygstad, K. L. Reichelt, et al. · The British Journal of Psychiatry · 41

The influence of physical and mental training on plasma beta‐endorphin level and pain perception after intensive physical exercise

2001 · O. Øktedalen, E. E. Solberg, et al. · Stress and Health · 39

Nicotinic acetylcholine receptor activation mediates nicotine‐induced enhancement of experimental periodontitis

2008 · T. Breivik, Y. Gundersen, et al. · Journal of Periodontal Research · 34

The Effect of Physical Stress on Gastric Secretion and Pancreatic Polypeptide Levels in Man

1984 · O. Øktedalen, I. Guldvog, et al. · Scandinavian Journal of Gastroenterology · 33

Nicotinic acetylcholine receptor activation mediates nicotine‐induced enhancement of experimental periodontitis

2009 · T. Breivik, Y. Gundersen, et al. · Journal of Periodontal Research · 29

Oral treatment with complement factor C5a receptor (CD88) antagonists inhibits experimental periodontitis in rats

2011 · T. Breivik, Y. Gundersen, et al. · Journal of Periodontal Research · 26

Transcutaneous nerve stimulation in patients with coronary arterial disease: Haemodynamic and biochemical effects

1990 · B. KAADA 1, H. VIK-MO, et al. · European Heart Journal · 26

Comparison of beta‐adrenoceptor blockers under maximal exercise (pindolol v metoprolol v atenolol).

1982 · J Erikssen, E Thaulow, et al. · British Journal of Clinical Pharmacology · 24

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No effect of seasonal variation in training load on immuno-endocrine responses to acute exhaustive exercise

2001 · O. Ronsen, K. Holm, et al. · Scandinavian Journal of Medicine and Science in Sports · 23

Plasma Concentration of Vasoactive Intestinal Polypeptide during Prolonged Physical Exercise, Calorie Supply Deficiency, and Sleep Deprivation

1983 · O. Øktedalen, P. K. Opstad, et al. · Scandinavian Journal of Gastroenterology · 23

Physiological Responses and Effects on Meat Quality in Reindeer (Rangifer Tarandus) Transported on Lorries

1984 · I. Haussen, A. Kyrkjebø, et al. · Acta veterinaria Scandinavica · 20

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The Influence of Prolonged Physical Stress on Gastric Juice Components in Healthy Man

1988 · O. øktedalen, Aa. Nesland, et al. · Scandinavian Journal of Gastroenterology · 19

Plasma renin activity and serum aldosterone during prolonged physical strain

1985 · P. K. Opstad, O. �ktedalen, et al. · European Journal of Applied Physiology · 19

Granulocyte chemiluminescence response to serum opsonized zymosan particlesex vivo during long-term strenuous exercise, energy and sleep deprivation in humans

1996 · P. Wiik, P. K. Opstad, et al. · European Journal of Applied Physiology · 18

Secretin—a new stress hormone?

1982 · O. Oektedalen, P.K. Opstad, et al. · Regulatory Peptides · 18

Works count: 60

Citation count: 1,559

H-index: 20

I10-index: 38