Publications 2021

Eie AMØ, Strand MF, Fredriksen PM, Lindberg M (2021)
Population-based reference intervals for ferritin, iron, transferrin and transferrin saturation and prevalence of iron deficiency in 6-12-year-old children: the Health Oriented Pedagogical Project (HOPP)
Scand J Clin Lab Invest, 81 (3), 208-212
DOI 10.1080/00365513.2021.1884893, PubMed 33607925

Froud R, Hansen SH, Ruud HK, Foss J, Ferguson L, Fredriksen PM (2021)
Relative Performance of Machine Learning and Linear Regression in Predicting Quality of Life and Academic Performance of School Children in Norway: Data Analysis of a Quasi-Experimental Study
J Med Internet Res, 23 (7), e22021
DOI 10.2196/22021, PubMed 34009128

Goswami N, Trozic I, Fredriksen MV, Fredriksen PM (2021)
The effect of physical activity intervention and nutritional habits on anthropometric measures in elementary school children: the health oriented pedagogical project (HOPP)
Int J Obes (Lond), 45 (8), 1677-1686
DOI 10.1038/s41366-021-00830-5, PubMed 33972698

Lederer AM, Fredriksen PM, Nkeh-Chungag BN, Everson F, Strijdom H, De Boever P, Goswami N (2021)
Cardiovascular effects of air pollution: current evidence from animal and human studies
Am J Physiol Heart Circ Physiol, 320 (4), H1417-H1439
DOI 10.1152/ajpheart.00706.2020, PubMed 33513082

Letswalo BP, Schmid-Zalaudek K, Brix B, Matjuda EN, Klosz F, Obernhumer N, Gaisl M, Engwa GA, Sewani-Rusike C, Fredriksen PM, Nkeh-Chungag B, Goswami N (2021)
Cardiometabolic risk factors and early indicators of vascular dysfunction: a cross-sectional cohort study in South African adolescents
BMJ Open, 11 (3), e042955
DOI 10.1136/bmjopen-2020-042955, PubMed 33737426

Lindberg M, Brokner M, Strand MF, Fredriksen PM (2021)
Distribution of creatinine and estimated glomerular filtration rate in healthy schoolchildren: The Health Oriented Pedagogical Project (HOPP)
Scand J Clin Lab Invest, 81 (3), 244-249
DOI 10.1080/00365513.2021.1904281, PubMed 33779452

Schmid-Zalaudek K, Brix B, Sengeis M, Jantscher A, Fürhapter-Rieger A, Müller W, Matjuda EN, Mungamba MM, Nkeh-Chungag B, Fredriksen PM, Goswami N (2021)
Subcutaneous Adipose Tissue Measured by B-Mode Ultrasound to Assess and Monitor Obesity and Cardio-Metabolic Risk in Children and Adolescents
Biology (Basel), 10 (5)
DOI 10.3390/biology10050449, PubMed 34065304

Publications 2020

Kharlova I, Deng WH, Mamen J, Mamen A, Fredriksen MV, Fredriksen PM (2020)
The Weather Impact on Physical Activity of 6-12 Year Old Children: A Clustered Study of the Health Oriented Pedagogical Project (HOPP)
Sports (Basel), 8 (1)
DOI 10.3390/sports8010009, PubMed 31963824

Kharlova I, Fredriksen MV, Mamen A, Fredriksen PM (2020)
Daily and Weekly Variation in Children's Physical Activity in Norway: A Cross-Sectional Study of The Health Oriented Pedagogical Project (HOPP)
Sports (Basel), 8 (11)
DOI 10.3390/sports8110150, PubMed 33233516

Mamen A, Braaum LE, Fredriksen PM (2020)
Presenting Health Status in Children Using a Radar Plot
Sports (Basel), 8 (4)
DOI 10.3390/sports8040053, PubMed 32340129

Reisinger C, Nkeh-Chungag BN, Fredriksen PM, Goswami N (2020)
The prevalence of pediatric metabolic syndrome-a critical look on the discrepancies between definitions and its clinical importance
Int J Obes (Lond), 45 (1), 12-24
DOI 10.1038/s41366-020-00713-1, PubMed 33208861

Thambawita V, Hicks SA, Borgli H, Stensland HK, Jha D, Svensen MK, Pettersen SA, Johansen D, Johansen HD, Pettersen SD, Nordvang S, Pedersen S, Gjerdrum A, Gronli TM, Fredriksen PM, Eg R, Hansen K, Fagernes S, Claudi C, Biorn-Hansen A, Nguyen DTD, Kupka T, Hammer HL, Jain R, Riegler MA et al. (2020)
PMDATA: A Sports Logging Dataset
MMSYS'20: PROCEEDINGS OF THE 2020 MULTIMEDIA SYSTEMS CONFERENCE, 231-236

Publications 2019

Fredriksen PM, Olsen HK, Johansen Meza T (2019)
Changes in Quality of Life in Elementary School Children-The Health Oriented Pedagogical Project (HOPP)
Sports (Basel), 7 (1)
DOI 10.3390/sports7010011, PubMed 30609845

Publications 2018

Deng WH, Fredriksen PM (2018)
Objectively assessed moderate-to-vigorous physical activity levels among primary school children in Norway: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 38-47
DOI 10.1177/1403494818771207, PubMed 29754576

Deng WH, Lindberg M, Hjelle OP, Mamen A, Fredriksen PM (2018)
Cardiovascular risk factors in a child population: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 28-37
DOI 10.1177/1403494818770130, PubMed 29754570

Fredriksen PM, Mamen A, Gammelsrud H, Lindberg M, Hjelle OP (2018)
Factors affecting running performance in 6-12-year-olds: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 61-67
DOI 10.1177/1403494818767816, PubMed 29754572

Fredriksen PM, Mamen A, Hjelle OP, Lindberg M (2018)
Handgrip strength in 6-12-year-old children: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 54-60
DOI 10.1177/1403494818769851, PubMed 29754575

Fredriksen PM, Skår A, Mamen A (2018)
Waist circumference in 6-12-year-old children: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 12-20
DOI 10.1177/1403494818767790, PubMed 29754573

Konijnenberg C, Fredriksen PM (2018)
The effects of a school-based physical activity intervention programme on children's executive control: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 82-91
DOI 10.1177/1403494818767823, PubMed 29754580

Lezhnieva N, Fredriksen PM, Bekkhus M (2018)
Peer relationships and quality of life in 11-12-year-old children: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 74-81
DOI 10.1177/1403494818767788, PubMed 29754579

Mamen A, Fredriksen PM (2018)
Anthropometric measures as fitness indicators in primary school children: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 48-53
DOI 10.1177/1403494818770129, PubMed 29754574

Ringdal K, Ringdal GI, Olsen HK, Mamen A, Fredriksen PM (2018)
Quality of life in primary school children: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 68-73
DOI 10.1177/1403494818767821, PubMed 29754578

Skår A, Meza TJ, Fredriksen PM (2018)
Development of weight and height in Norwegian children: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 3-11
DOI 10.1177/1403494818769852, PubMed 29754577

Strand MF, Fredriksen PM, Hjelle OP, Lindberg M (2018)
Reference intervals for serum lipids and prevalence of dyslipidaemia in 6-12-year-old children: The Health Oriented Pedagogical Project (HOPP)
Scand J Public Health, 46 (21_suppl), 21-27
DOI 10.1177/1403494818767824, PubMed 29754571

Publications 2017

Fredriksen PM, Hjelle OP, Mamen A, Meza TJ, Westerberg AC (2017)
The health Oriented pedagogical project (HOPP) - a controlled longitudinal school-based physical activity intervention program
BMC Public Health, 17 (1), 370
DOI 10.1186/s12889-017-4282-z, PubMed 28454531

Fredriksen PM, Mamen A (2017)
Energy requirements of tire pulling
J Sports Med Phys Fitness, 57 (10), 1245-1251
DOI 10.23736/S0022-4707.17.06896-7, PubMed 28198604

Publications 2012

Brun H, Moller T, Fredriksen PM, Thaulow E, Pripp AH, Holmstrom H (2012)
Mechanisms of exercise-induced pulmonary hypertension in patients with cardiac septal defects
Pediatr Cardiol, 33 (5), 782-90
DOI 10.1007/s00246-012-0216-9, PubMed 22383098

Forberg SI, Støren O, Fredriksen PM (2012)
Blood pressure during leg extension in children
Int J Sports Med, 33 (10), 802-6
DOI 10.1055/s-0032-1304589, PubMed 22562747

Publications 2011

Tangeraas T, Midtvedt K, Cvancarova M, Hirth A, Fredriksen PM, Tonstad S, Isaksen GA, Bjerre A (2011)
Cardiorespiratory fitness in young adults with a history of renal transplantation in childhood
Pediatr Nephrol, 26 (11), 2041-9
DOI 10.1007/s00467-011-1898-6, PubMed 21541798

Publications 2010

Fredriksen PM (2010)
Lifetime perspective on adults with congenital heart disease
P.M. Fredriksen, Oslo
BIBSYS 111909317

Möller T, Brun H, Fredriksen PM, Holmstrøm H, Peersen K, Pettersen E, Grünig E, Mereles D, Thaulow E (2010)
Right ventricular systolic pressure response during exercise in adolescents born with atrial or ventricular septal defect
Am J Cardiol, 105 (11), 1610-6
DOI 10.1016/j.amjcard.2010.01.024, PubMed 20494671

Möller T, Brun H, Fredriksen PM, Holmstrøm H, Pettersen E, Thaulow E (2010)
Moderate altitude increases right ventricular pressure and oxygen desaturation in adolescents with surgically closed septal defect
Congenit Heart Dis, 5 (6), 556-64
DOI 10.1111/j.1747-0803.2010.00425.x, PubMed 21106015

Möller T, Leren TP, Eiklid KL, Holmstrøm H, Fredriksen PM, Thaulow E (2010)
A novel BMPR2 gene mutation associated with exercise-induced pulmonary hypertension in septal defects
Scand Cardiovasc J, 44 (6), 331-6
DOI 10.3109/14017431.2010.525747, PubMed 21070126

Tangeraas T, Midtvedt K, Fredriksen PM, Cvancarova M, Mørkrid L, Bjerre A (2010)
Cardiorespiratory fitness is a marker of cardiovascular health in renal transplanted children
Pediatr Nephrol, 25 (11), 2343-50
DOI 10.1007/s00467-010-1596-9, PubMed 20676694

Publications 2009

Fredriksen PM, Diseth TH, Thaulow E (2009)
Children and adolescents with congenital heart disease: assessment of behavioural and emotional problems
Eur Child Adolesc Psychiatry, 18 (5), 292-300
DOI 10.1007/s00787-008-0730-8, PubMed 19156353

Mathisen L, Lingaas PS, Andersen MH, Hol PK, Fredriksen PM, Sundet K, Rokne B, Wahl AK, Fosse E (2009)
Changes in cardiac and cognitive function and self-reported outcomes at one year after coronary artery bypass grafting
J Thorac Cardiovasc Surg, 140 (1), 122-8
DOI 10.1016/j.jtcvs.2009.10.034, PubMed 20018306

Möller T, Peersen K, Pettersen E, Thaulow E, Holmstrøm H, Fredriksen PM (2009)
Non-invasive measurement of the response of right ventricular pressure to exercise, and its relation to aerobic capacity
Cardiol Young, 19 (5), 465-73
DOI 10.1017/S1047951109990928, PubMed 19674500

Pettersen E, Fredriksen PM, Urheim S, Thaulow E, Smith HJ, Smevik B, Smiseth O, Andersen K (2009)
Ventricular function in patients with transposition of the great arteries operated with arterial switch
Am J Cardiol, 104 (4), 583-9
DOI 10.1016/j.amjcard.2009.04.029, PubMed 19660616

Publications 2008

Fredriksen PM, Pettersen E, Thaulow E (2008)
Declining aerobic capacity of patients with arterial and atrial switch procedures
Pediatr Cardiol, 30 (2), 166-71
DOI 10.1007/s00246-008-9291-3, PubMed 18712434

Holm I, Fredriksen P, Fosdahl M, Vøllestad N (2008)
A normative sample of isotonic and isokinetic muscle strength measurements in children 7 to 12 years of age
Acta Paediatr, 97 (5), 602-7
DOI 10.1111/j.1651-2227.2008.00709.x, PubMed 18355391

Holm I, Tveter AT, Fredriksen PM, Vøllestad N (2008)
A normative sample of gait and hopping on one leg parameters in children 7-12 years of age
Gait Posture, 29 (2), 317-21
DOI 10.1016/j.gaitpost.2008.09.016, PubMed 19019681

Publications 2007

Brun H, Thaulow E, Fredriksen PM, Holmstrom H (2007)
Treatment of patients with Eisenmenger's syndrome with Bosentan
Cardiol Young, 17 (3), 288-94
DOI 10.1017/S1047951107000522, PubMed 17451611

Fredriksen PM, Roislien J, Thaulow E (2007)
The estimated number of patients with adult congenital heart defects in Norway
Scand J Med Sci Sports, 18 (4), 520-5
DOI 10.1111/j.1600-0838.2007.00734.x, PubMed 18067513

Holm I, Fredriksen PM, Fosdahl MA, Olstad M, Vøllestad N (2007)
Impaired motor competence in school-aged children with complex congenital heart disease
Arch Pediatr Adolesc Med, 161 (10), 945-50
DOI 10.1001/archpedi.161.10.945, PubMed 17909137

Publications 2006

Hagemo PS, Skarbø AB, Rasmussen M, Fredriksen PM, Schage S (2006)
An extensive long term follow-up of a cohort of patients with hypoplasia of the left heart
Cardiol Young, 17 (1), 51-5
DOI 10.1017/S1047951106001284, PubMed 17184572

Lingaas PS, Hol PK, Lundblad R, Rein KA, Mathisen L, Smith HJ, Andersen R, Thaulow E, Tønnesen TI, Svennevig JL, Hauge SN, Fredriksen PM, Andersen M, Fosse E (2006)
Clinical and radiologic outcome of off-pump coronary surgery at 12 months follow-up: a prospective randomized trial
Ann Thorac Surg, 81 (6), 2089-95
DOI 10.1016/j.athoracsur.2005.12.003, PubMed 16731135

Matthews IL, Fredriksen PM, Bjørnstad PG, Thaulow E, Gronn M (2006)
Reduced pulmonary function in children with the Fontan circulation affects their exercise capacity
Cardiol Young, 16 (3), 261-7
DOI 10.1017/S1047951106000345, PubMed 16725065

Publications 2005

Clarke-Jenssen AC, Fredriksen PM, Lilleby V, Mengshoel AM (2005)
Effects of supervised aerobic exercise in patients with systemic lupus erythematosus: a pilot study
Arthritis Rheum, 53 (2), 308-12
DOI 10.1002/art.21082, PubMed 15818657

Fredriksen PM, Pettersen SA (2005)
Slank med trening
In Norsk idrettsmedisin, Medborgeren, Oslo, 20(2005)nr 1, S. 21-24
BIBSYS 051322900

Fredriksen PM, Pettersen SA (2005)
Normalutvikling av utholdenhet og styrke hos barn og unge
In Fysioterapeuten, Norsk fysioterapeutforbund, Oslo, 72(2005)nr 6, S. 14-19
BIBSYS 05119645x

Publications 2004

Dahl A, Skjeldal OH, Simensen A, Dalen HE, Bråthen T, Ahlvin P, Svendsby EK, Sveinall A, Fredriksen PM (2004)
[Treatment of patients with neuromuscular disease in a warm climate]
Tidsskr Nor Laegeforen, 124 (13-14), 1795-8
PubMed 15229669

Fredriksen PM, Mengshoel AM, Frydenlund A, Sørbye Ø, Thaulow E (2004)
Follow-up in patients with congenital cardiac disease more complex than haemodynamic assessment
Cardiol Young, 14 (4), 373-9
DOI 10.1017/S1047951104004044, PubMed 15680042

Thaulow E, Fredriksen PM (2004)
Exercise and training in adults with congenital heart disease
Int J Cardiol, 97 Suppl 1, 35-8
DOI 10.1016/j.ijcard.2004.08.007, PubMed 15590077

Publications 2003

Fredriksen PM (2003)
Fysisk aktivitetsnivå, yteevne og overvekt hos barn og unge
In Norsk idrettsmedisin, Medborgeren, Oslo, 18(2003)nr 1, S. 14-16
BIBSYS 030761042

Pettersen SA, Fredriksen PM (2003)
Hvordan uttrykke aerob kapasitet hos barn og unge?
In Tidsskrift for Den norske legeforening, Foreningen, Oslo, 123(2003)nr. 22, S. 3203-3205
BIBSYS 032017138

Pettersen SA, Fredriksen PM (2003)
[How to scale aerobic capacity in children and adolescents?]
Tidsskr Nor Laegeforen, 123 (22), 3203-5
PubMed 14714009

Publications 2002

Fredriksen PM (2002)
Exercise-based cardiac rehabilitation is effective in reducing cardiac deaths
Aust J Physiother, 48 (4), 319
DOI 10.1016/s0004-9514(14)60177-x, PubMed 12542038

Fredriksen PM, Pettersen SA (2002)
Fysisk aktivitet og fysisk yteevne hos barn og unge
In Fysisk aktivitet og helse: temahefte, Foreningen, Oslo, S. 12-15
BIBSYS 021845638

Fredriksen PM, Therrien J, Veldtman G, Ali Warsi M, Liu P, Thaulow E, Webb G (2002)
Aerobic capacity in adults with tetralogy of Fallot
Cardiol Young, 12 (6), 554-9
DOI 10.1017/s1047951102001002, PubMed 12636004

Publications 2001

Fredriksen PM (2001)
Fysisk funksjonsnivå hos barn og unge med medfødt hjertefeil
In Fysioterapeuten, Norsk fysioterapeutforbund, Oslo, 68(2001)nr 7, S. 9-16
BIBSYS 011151927

Fredriksen PM, Chen A, Veldtman G, Hechter S, Therrien J, Webb G (2001)
Exercise capacity in adult patients with congenitally corrected transposition of the great arteries
Heart, 85 (2), 191-5
DOI 10.1136/heart.85.2.191, PubMed 11156671

Fredriksen PM, Pettersen SA (2001)
Aspekter ved overvekt hos barn og unge
In Fysioterapeuten, Norsk fysioterapeutforbund, Oslo, 68(2001)nr 12, S. 11-16
BIBSYS 012077666

Fredriksen PM, Therrien J, Veldtman G, Warsi MA, Liu P, Siu S, Williams W, Granton J, Webb G (2001)
Lung function and aerobic capacity in adult patients following modified Fontan procedure
Heart, 85 (3), 295-9
DOI 10.1136/heart.85.3.295, PubMed 11179270

Fredriksen PM, Veldtman G, Hechter S, Therrien J, Chen A, Warsi MA, Freeman M, Liu P, Siu S, Thaulow E, Webb G (2001)
Aerobic capacity in adults with various congenital heart diseases
Am J Cardiol, 87 (3), 310-4
DOI 10.1016/s0002-9149(00)01364-3, PubMed 11165966

Hechter SJ, Fredriksen PM, Liu P, Veldtman G, Merchant N, Freeman M, Therrien J, Benson L, Siu S, Webb G (2001)
Angiotensin-converting enzyme inhibitors in adults after the Mustard procedure
Am J Cardiol, 87 (5), 660-3, A11
DOI 10.1016/s0002-9149(00)01452-1, PubMed 11230861

Hechter SJ, Webb G, Fredriksen PM, Benson L, Merchant N, Freeman M, Veldtman G, Warsi MA, Siu S, Liu P (2001)
Cardiopulmonary exercise performance in adult survivors of the Mustard procedure
Cardiol Young, 11 (4), 407-14
DOI 10.1017/s104795110100052x, PubMed 11558950

Pettersen SA, Fredriksen PM, Ingjer E (2001)
The correlation between peak oxygen uptake (VO2peak) and running performance in children and adolescents. aspects of different units
Scand J Med Sci Sports, 11 (4), 223-8
DOI 10.1034/j.1600-0838.2001.110405.x, PubMed 11476427

Veldtman GR, Nishimoto A, Siu S, Freeman M, Fredriksen PM, Gatzoulis MA, Williams WG, Webb GD (2001)
The Fontan procedure in adults
Heart, 86 (3), 330-5
DOI 10.1136/heart.86.3.330, PubMed 11514490

Publications 2000

Fredriksen PM (2000)
Physical functioning in children and adolescents with congenital heart disease
The Norwegian University of Sport and Physical Education, [Oslo], 1 b. (flere pag.)
BIBSYS 001400940, ISBN 82-502-0346-1

Fredriksen PM, Ingjer E, Thaulow E (2000)
Physical activity in children and adolescents with congenital heart disease. Aspects of measurements with an activity monitor
Cardiol Young, 10 (2), 98-106
DOI 10.1017/s1047951100006545, PubMed 10817292

Fredriksen PM, Kahrs N, Blaasvaer S, Sigurdsen E, Gundersen O, Roeksund O, Norgaand G, Vik JT, Soerbye O, Ingjer E, Thaulow E (2000)
Effect of physical training in children and adolescents with congenital heart disease
Cardiol Young, 10 (2), 107-14
DOI 10.1017/s1047951100006557, PubMed 10817293

Fredriksen PM, Pettersen SA (2000)
Fysisk aktivitet og fysisk yteevne hos barn og unge
In Tidsskrift for Den norske legeforening, Foreningen, Oslo, 120(2000)nr. 29, S. 3567-3570
BIBSYS 010332650

Fredriksen PM, Pettersen SA (2000)
[Physical activity and physical performance in children and adolescents]
Tidsskr Nor Laegeforen, 120 (29), 3567-70
PubMed 11188387

Publications 1999

Fredriksen PM (1999)
Måling av fysisk aktivitet hos barn og unge
In Fysioterapeuten, Norsk fysioterapeutforbund, Oslo, 66(1999)nr 4, S. 12-15
BIBSYS 990838358

Fredriksen PM, Ingjer F, Nystad W, Thaulow E (1999)
A comparison of VO2(peak) between patients with congenital heart disease and healthy subjects, all aged 8-17 years
Eur J Appl Physiol Occup Physiol, 80 (5), 409-16
DOI 10.1007/s004210050612, PubMed 10502074

Publications 1998

Fredriksen PM (1998)
Etiske aspekter ved testing av aerob kapasitet hos hjertesyke barn
In Fysioterapeuten, Norsk fysioterapeutforbund, Oslo, 65(1998)nr 12, S. 21-23
BIBSYS 990261816

Fredriksen PM, Ingjer F, Nystad W, Thaulow E (1998)
Aerobic endurance testing of children and adolescents--a comparison of two treadmill-protocols
Scand J Med Sci Sports, 8 (4), 203-7
DOI 10.1111/j.1600-0838.1998.tb00193.x, PubMed 9764441

Fredriksen PM, Ingjer F, Thaulow E (1998)
[A protocol for testing aerobic capacity in children and adolescents with congenital heart defects]
Tidsskr Nor Laegeforen, 118 (17), 2636-9
PubMed 9673514

Fredriksen PM, Thaulow E, Nystad W, Ingjer F (1998)
[Aerobic capacity in children and adolescents--Nordic results over the past 45 years]
Tidsskr Nor Laegeforen, 118 (20), 3106-10
PubMed 9760851

Publications 1997

Fredriksen PM, Thaulow E (1997)
Fysisk aktivitet hos barn og unge med medfødte hjertefeil
In Fysioterapeuten, Norsk fysioterapeutforbund, Oslo, 64(1997)nr 9, S. 11-16
BIBSYS 99026128x

Publications 1996

Fredriksen PM (1996)
Arbeidskapasitet hos barn og unge: utvikling av en belastningstest for sammenligning mellom friske og barn/unge med hjertefeil, samt etablering av normalverdier for arbeidskapasitet i alderen 8-16 år
NIH, Oslo, 71 s., [27] bl.
BIBSYS 960675159