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

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

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

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

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

Publications 1999

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, 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