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    • Association between Fat-Free Mass Loss, Changes in Appetite, and Weight Regain in Individuals with Obesity 

      Alho Letra Martins, Catia Patricia; Nymo, Siren; Coutinho, Sílvia; Rehfeld, Jens F.; Hunter, Gary R.; Gower, Barbara A. (Peer reviewed; Journal article, 2023)
      Background The role of fat-free mass loss (FFML) in modulating weight regain in individuals with obesity, as well as the potential mechanisms involved, remain inconsistent. Objectives The aim of this study was to determine ...

    • Association between habitual sleep duration/quality and appetite markers in individuals with obesity 

      Nymo, Siren; Kleppe, Malin M.; Coutinho, Silvia; Rehfeld, Jens F.; Kulseng, Bård Eirik; Martins, Catia (Peer reviewed; Journal article, 2021)
      Study Objectives: To assess if habitual sleep duration/quality was associated with appetite in individuals with obesity, and if the association was modulated by sex. Methods: Sleep duration/quality was measured with ...

    • Association between in-hospital frailty and health-related quality of life after stroke: the Nor-COAST study 

      Wæhler, Idunn Snorresdatter; Saltvedt, Ingvild; Lydersen, Stian; Fure, Brynjar; Askim, Torunn; Einstad, Marte Stine; Thingstad, Pernille (Peer reviewed; Journal article, 2021)
      Background: Stroke survivors are known to have poorer health-related quality of life (HRQoL) than the general population, but less is known about characteristics associated with HRQoL decreasing through time following a ...

    • Association between low body weight and cytochrome P-450 enzyme activity in patients with anorexia nervosa 

      Sandvik, Pål; Lydersen, Stian; Hegstad, Solfrid; Spigset, Olav (Peer reviewed; Journal article, 2020)
      Very little is known to which extent severe underweight could affect cytochrome P-450 (CYP) enzyme activity. In this study, 24 patients with anorexia nervosa at two occasions ingested single oral doses of five test drugs ...

    • Association between polarity of first episode and solar insolation in bipolar I disorder 

      Bauer, Michael; Glenn, Tasha; Achtyes, Eric D.; Alda, Martin; Agaoglu, Esen; Altınbaş, Kürşat; Andreassen, Ole; Angelopoulos, Elias; Ardau, Raffaella; Aydin, Memduha; Ayhan, Yavuz; Baethge, Christopher; Bauer, Rita; Baune, Bernhard T.; Balaban, Ceylan; Becerra-Palars, Claudia; Behere, Aniruddh P.; Behere, Prakash B.; Belete, Habte; Belete, Tilahun; Belizario, Gabriel Okawa; Bellivier, Frank; Belmaker, Robert H.; Benedetti, Francesco; Berk, Michael; Bersudsky, Yuly; Bicakci, Şule; Birabwa-Oketcho, Harriet; Bjella, Thomas; Brady, Conan; Cabrera, Jorge; Cappucciati, Marco; Castro, Angela Marianne Paredes; Chen, Wei-Ling; Cheung, Eric Y.W.; Chiesa, Silvia; Crowe, Marie; Cuomo, Alessandro; Dallaspezia, Sara; Del Zompo, Maria; Desai, Pratikkumar; Dodd, Seetal; Etain, Bruno; Fagiolini, Andrea; Fellendorf, Frederike T.; Ferensztajn-Rochowiak, Ewa; Fiedorowicz, Jess G.; Fountoulakis, Kostas N.; Frye, Mark A.; Geoffroy, Pierre A.; Gonzalez-Pinto, Ana; Gottlieb, John F.; Grof, Paul; Haarman, Bartholomeus C.M.; Harima, Hirohiko; Hasse-Sousa, Mathias; Henry, Chantal; Høffding, Lone; Houenou, Josselin; Imbesi, Massimiliano; Isometsä, Erkki T.; Ivkovic, Maja; Janno, Sven; Johnsen, Simon; Kapczinski, Flávio; Karakatsoulis, Gregory N.; Kardell, Mathias; Kessing, Lars Vedel; Kim, Seong Jae; König, Barbara; Kot, Timur L.; Koval, Michael; Kunz, Mauricio; Lafer, Beny; Landén, Mikael; Larsen, Erik R.; Lenger, Melanie; Lewitzka, Ute; Licht, Rasmus W.; Lopez-Jaramillo, Carlos; MacKenzie, Alan; Madsen, Helle Østergaard; Madsen, Simone Alberte Kongstad A.; Mahadevan, Jayant; Mahardika, Agustine; Manchia, Mirko; Marsh, Wendy; Martinez-Cengotitabengoa, Monica; Martiny, Klaus; Mashima, Yuki; McLoughlin, Declan M.; Meesters, Ybe; Melle, Ingrid; Meza-Urzúa, Fátima; Mok, Yee Ming; Monteith, Scott; Moorthy, Muthukumaran; Morken, Gunnar; Mosca, Enrica; Mozzhegorov, Anton A.; Munoz, Rodrigo; Mythri, Starlin V.; Nacef, Fethi; Nadella, Ravi K.; Nakanotani, Takako; Nielsen, René Ernst; O'Donovan, Claire; Omrani, Adel; Osher, Yamima; Ouali, Uta; Pantovic-Stefanovic, Maja; Pariwatcharakul, Pornjira; Petite, Joanne; Pfennig, Andrea; Ruiz, Yolanda Pica; Pinna, Marco; Pompili, Maurizio; Porter, Richard; Quiroz, Danilo; Rabelo-da-Ponte, Francisco Diego; Ramesar, Raj; Rasgon, Natalie; Ratta-apha, Woraphat; Ratzenhofer, Michaela; Redahan, Maria; Reddy, M.S.; Reif, Andreas; Reininghaus, Eva Z.; Richards, Jenny Gringer; Ritter, Philipp; Rybakowski, Janusz K.; Sathyaputri, Leela; Scippa, Ângela M.; Simhandl, Christian; Smith, Daniel; Smith, José; Stackhouse, Paul W.; Stein, Dan J.; Stilwell, Kellen; Strejilevich, Sergio; Su, Kuan-Pin; Subramaniam, Mythily; Sulaiman, Ahmad Hatim; Suominen, Kirsi; Tanra, Andi J.; Tatebayashi, Yoshitaka; Teh, Wen Lin; Tondo, Leonardo; Torrent, Carla; Tuinstra, Daniel; Uchida, Takahito; Vaaler, Arne; Vieta, Eduard; Viswanath, Biju; Yoldi-Negrete, Maria; Yalcinkaya, Oguz Kaan; Young, Allan H.; Zgueb, Yosra; Whybrow, Peter C. (Peer reviewed; Journal article, 2022)
      Objective Circadian rhythm disruption is commonly observed in bipolar disorder (BD). Daylight is the most powerful signal to entrain the human circadian clock system. This exploratory study investigated if solar insolation ...

    • Association between pulmonary function and peak oxygen uptake in elderly: the Generation 100 study 

      Hassel, Erlend; Stensvold, Dorthe; Halvorsen, Thomas; Wisløff, Ulrik; Langhammer, Arnulf; Steinshamn, Sigurd Loe (Peer reviewed; Journal article, 2015)
      Background Although reduced function of the respiratory system limits peak oxygen uptake in diseases affecting the lungs or airways, the healthy respiratory system is thought to have a spare capacity for oxygen transport ...

    • The association between rheumatoid arthritis and reduced estimated cardiorespiratory fitness is mediated by physical symptoms and negative emotions: a cross-sectional study 

      Houge, Ingrid Sæther; Hoff, Mari; Videm, Vibeke (Peer reviewed; Journal article, 2023)
      Objectives Persons with rheumatoid arthritis (RA) have lower cardiorespiratory fitness (CRF) than healthy individuals. We sought to identify variables explaining the association between RA status and reduced CRF. Methods RA ...

    • Association between ß-Hydroxybutyrate Plasma Concentrations after Hypocaloric Ketogenic Diets and Changes in Body Composition 

      Martins, Catia; Nymo, Siren; Aukan, Marthe Isaksen; Røkenes, Jessica Ann; Coutinho, Sílvia; Hunter, Gary R; Gower, Barbara A (Journal article; Peer reviewed, 2023)
      Background Early studies show that ketogenic diets (KDs) lead to preferential loss of fat mass (FM), whereas preserving fat-free mass (FFM). Additionally, animal data support the anticatabolic effects of DL-3-hydroxybutyrate. ...

    • Association of Conventional Cardiovascular Risk Factors With Cardiovascular Disease After Hypertensive Disorders of Pregnancy: Analysis of the Nord-Trøndelag Health Study 

      Haug, Eirin Beate; Horn, Julie; Markovitz, Amanda R; Fraser, Abigail; Klykken, Bjørnar E.; Dalen, Håvard; Vatten, Lars Johan; Romundstad, Pål Richard; Rich-Edwards, Janet W.; Åsvold, Bjørn Olav (Journal article; Peer reviewed, 2019)
      Importance Women with a history of hypertensive disorders of pregnancy (HDP) have higher risk of cardiovascular disease (CVD). It is not known how much of the excess CVD risk in women with a history of HDP is associated ...

    • The association of electronic health literacy with behavioural and psychological coronary artery disease risk factors in patients after percutaneous coronary intervention: a 12-month follow-up study 

      Brørs, Gunhild; Dalen, Håvard; Allore, Heather; Deaton, Christi; Fridlund, Bengt Gotthard Anton; Norman, Cameron D.; Palm, Pernille; Wentzel-Larsen, Tore; Norekvål, Tone Merete (Peer reviewed; Journal article, 2023)
      Aims Fundamental roadblocks, such as non-use and low electronic health (eHealth) literacy, prevent the implementation of eHealth resources. The aims were to study internet usage for health information and eHealth literacy ...

    • Association of Genetically Predicted Insomnia with Risk of Sepsis: A Mendelian Randomization Study 

      Thorkildsen, Marianne Thorkildsen; Gustad, Lise Tuset; Mohus, Randi Marie; Burgess, Stephen; Nilsen, Tom Ivar Lund; Damås, Jan Kristian; Rogne, Tormod (Peer reviewed; Journal article, 2023)
      Importance Insomnia has been associated with altered inflammatory response as well as increased risk of infections and sepsis in observational studies. However, these studies are prone to bias, such as residual confounding. ...

    • Association of Klotho protein levels and KL-VS heterozygosity with Alzheimer disease and amyloid and tau burden 

      Grøntvedt, Gøril Rolfseng; Sando, Sigrid Botne; Lauridsen, Camilla; Bråthen, Geir; White, Linda Rosemary; Salvesen, Øyvind; Aarsland, Dag; Hessen, Erik; Fladby, Tormod; Waterloo, Knut K; Scheffler, Katja (Journal article; Peer reviewed, 2022)

    • Association of Modic change types and their short tau inversion recovery signals with clinical characteristics : a cross sectional study of chronic low back pain patients in the AIM-study 

      Bråten, Lars Christian Haugli; Schistad, Ellina Iordanova; Espeland, Ansgar; Kristoffersen, Per M; Haugen, Anne Julsrud; Marchand, Gunn Hege; Vetti, Nils; Pripp, Are Hugo; Kadar, Thomas; Skouen, Jan Sture; Grotle, Margreth; Grøvle, Lars; Zwart, John-Anker; Brox, Jens Ivar; Storheim, Kjersti (Peer reviewed; Journal article, 2020)
      Background - Modic Changes (MCs, magnetic resonance imaging (MRI) signal changes in the vertebral bone marrow extending from the vertebral endplate) may represent a subgroup of nonspecific chronic low back pain that could ...

    • Association of oxytocin augmentation and duration of labour with postpartum haemorrhage: A cohort study of nulliparous women 

      Bernitz, Stine; Betran, Ana Pilar; Gunnes, Nina; Zhang, Jun; Blix, Ellen; Øian, Pål; Eggebø, Torbjørn Moe; Dalbye, Rebecka (Peer reviewed; Journal article, 2023)
      Objective Both duration of labour and use of oxytocin for augmentation are known risk factors for postpartum haemorrhage but distinguishing between the significance of these factors is complex. In this study, we aimed to ...

    • Association of Preterm Birth With Prescription of Psychotropic Drugs in Adolescence and Young Adulthood. 

      Bachmann, Christine Strand; Risnes, Kari; Bjørngaard, Johan Håkon; Schei, Jorun; Pape, Kristine (Peer reviewed; Journal article, 2021)
      Importance Individuals born preterm have increased risk of mental health impairment compared with individuals born at term. The associations between preterm birth and attention-deficit/hyperactivity disorder and autism are ...

    • Association of serum cortisol and cortisone levels and risk of recurrence after endocrine treatment in breast cancer 

      Wang, Feng; Giskeødegård, Guro F.; Skarra, Sissel; Engstrøm, Monica Jernberg; Hagen, Lars; Geisler, Jürgen; Mikkola, Tomi S.; Tikkanen, Matti J.; Debik, Julia; Reidunsdatter, Randi Johansen; Bathen, Tone Frost (Peer reviewed; Journal article, 2023)
      Metabolic reprogramming in breast cancer involves changes in steroid hormone synthesis and metabolism. Alterations in estrogen levels in both breast tissue and blood may influence carcinogenesis, breast cancer growth, and ...

    • Association of smoking and cancer with the risk of venous thromboembolism: the Scandinavian Thrombosis and Cancer cohort 

      Paulsen, Benedikte; Gran, Olga Vikhammer; Severinsen, Marianne T.; Hammerstrøm, Jens; Kristensen, Søren Risom; Cannegieter, Suzanne C.; Skille, Hanne; Tjønneland, Anne; Rosendaal, Frits; Overvad, Kim; Næss, Inger Anne; Hansen, John-Bjarne; Brækkan, Sigrid K. (Peer reviewed; Journal article, 2021)
      Smoking is a well-established risk factor for cancer, and cancer patients have a high risk of venous thromboembolism (VTE). Conflicting results have been reported on the association between smoking and risk of VTE, and the ...

    • Association of treatment procedures and resilience to symptom load three-years later in a clinical sample of adolescent psychiatric patients 

      Gårdvik, Kari Skulstad; Rygg, Marite; Torgersen, Terje; Wallander, Jan Lance; Lydersen, Stian; Indredavik, Marit Sæbø (Peer reviewed; Journal article, 2021)
      Background We aimed to examine symptom load in a clinical adolescent population at three-year follow-up and explore associations with standard care treatment procedures and resilience factors upon first presenting at Child ...

    • The association of women’s birth size with risk of molecular breast cancer subtypes: a cohort study 

      Sandvei, Marie Søfteland; Opdahl, Signe; Valla, Marit; Lagiou, Pagona; Vesterfjell, Ellen Veronika; Rise, Tor Vikan; Overrein, Tina Syvertsen; Skjervold, Anette Hansen; Engstrøm, Monica J; Bofin, Anna M.; Vatten, Lars J. (Peer reviewed; Journal article, 2021)
      Background: Because birth size appears to be positively associated with breast cancer risk, we have studied whether this risk may differ according to molecular breast cancer subtypes. Methods: A cohort of 22,931 women born ...

    • Association studies of up to 1.2 million individuals yield new insights into the genetic etiology of tobacco and alcohol use 

      Liu, Ming; Jiang, Yu; Wedow, Robbee; Li, Yue; Brazel, David M.; Chen, Fang; Datta, Gargi; Davila-Velderrain, Jose; Mitchell, Amy; Skogholt, Anne Heidi; Sivertsen, Børge; Stordal, Eystein; Morken, Gunnar; Kallestad, Håvard; Heuch, Ingrid; Zwart, John-Anker; Fjukstad, Katrine Kveli; Pedersen, Linda Margareth; Johnsen, Marianne Bakke; Skrove, Marit Synnøve; Indredavik, Marit Sæbø; Drange, Ole Kristian; Bjerkeset, Ottar; Børte, Sigrid; Stensland, Synne; Choquet, Hélène; Docherty, Anna R.; Faul, Jessica D.; Foerster, Johanna R.; Fritsche, Lars; Gabrielsen, Maiken Elvestad; Gordon, Scott D.; Haessler, Jeffrey; Hottenga, Jouke-Jan; Huang, Hongyan; Jang, Seon-Kyeong; Jansen, Philip R.; Ling, Yueh; Mägi, Reedik; Matoba, Nana; McMahon, George; Mulas, Antonella; Orrú, Valeria; Palviainen, Teemu; Pandit, Anita; Reginsson, Gunnar W.; Smith, Jennifer A.; Taylor, Amy E.; Turman, Constance; Willemsen, Gonneke; Young, Hannah; Young, Kendra A.; Zajac, Gregory J.M.; Zhao, Wei; Zhou, Wei; Björnsdóttir, Gyda Thora; Boardman, Jason D.; Boehnke, Michael; Boomsma, Dorret I.; Chen, Chu; Davies, Gareth E.; Eaton, Charles B.; Winsvold, Bendik K S; Hveem, Kristian; Vrieze, Scott (Journal article; Peer reviewed, 2019)
      Tobacco and alcohol use are leading causes of mortality that influence risk for many complex diseases and disorders1. They are heritable2,3 and etiologically related4,5 behaviors that have been resistant to gene discovery ...