Browsing NTNU Open by Author "Sand, Trond"
Now showing items 41-57 of 57
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Sleep restriction does not potentiate nocebo‐induced changes in pain and cortical potentials
Ree, Anbjørn; Nilsen, Kristian Bernhard; Knardahl, Stein; Sand, Trond; Matre, Dagfinn (Peer reviewed; Journal article, 2019)Background: The increased pain sensitivity following reduced sleep may be related to changes in cortical processing of nociceptive stimuli. Expectations shape pain perception and can inhibit (placebo) or enhance (nocebo) ... -
Sleep structure and awakening threshold in delayed sleep-wake phase disorder patients compared to healthy sleepers
Solheim, Brandy; Langsrud, Knut; Kallestad, Håvard; Engstrøm, Morten; Bjorvatn, Bjørn; Sand, Trond (Journal article; Peer reviewed, 2018)Study Objectives Difficult early morning awakening is a primary symptom of delayed sleep-wake phase disorder (DSWPD), however, it remains poorly investigated. Our main objective was to quantify the awakening threshold in ... -
Sleep-related and non-sleep-related migraine: interictal sleep quality, arousals and pain thresholds
Engstrøm, Morten; Hagen, Knut; Bjørk, Marte Helene; Gravdahl, Gøril Bruvik; Sand, Trond (Journal article; Peer reviewed, 2013)Background The mechanisms associating sleep and migraine are unknown. No previous polysomnographic (PSG) or pain-threshold (PT) study has compared patients with sleep-related migraine attacks (SM), non-sleep related ... -
Symptoms of epilepsy and organic brain dysfunctions in patients with acute, brief depression combined with other fluctuating psychiatric symptoms: a controlled study from an acute psychiatric department
Vaaler, Arne; Morken, Gunnar; Linaker, Olav Morten; Sand, Trond; Kvistad, Kjell Arne; Bråthen, Geir (Journal article; Peer reviewed, 2009)Background: In psychiatric acute departments some patients present with brief depressive periods accompanied with fluctuating arrays of other psychiatric symptoms like psychosis, panic or mania. For the purpose of the ... -
The bidirectional association between sleep problems and chronic musculoskeletal pain: influence of lifestyle, physical work exposure and systemic inflammation Prospective data from the HUNT Study and the Tromsø Study
Skarpsno, Eivind Schjelderup (Doctoral theses at NTNU;2019:350, Doctoral thesis, 2019) -
The crossover design for migraine preventives: an analyses of four randomized placebo-controlled trials
Astrid Bjørke, Jenssen; Stovner, Lars Jacob; Tronvik, Erling Andreas; Sand, Trond; Helde, Grethe; Gravdahl, Gøril Bruvik; Hagen, Knut (Journal article; Peer reviewed, 2019)Aims To evaluate the crossover design in migraine preventive treatment trials by assessing dropout rate, and potential period and carryover effect in four placebo-controlled randomized controlled trials (RCTs). Methods In ... -
The epidemiology of headache disorders: a face-to-face interview of participants in HUNT4
Hagen, Knut; Åsberg, Anders Nikolai; Uhlig, Benjamin Langsæter; Tronvik, Erling Andreas; Brenner, Eiliv; Stjern, Marit; Helde, Grethe; Gravdahl, Gøril Bruvik; Sand, Trond (Journal article; Peer reviewed, 2018)Background The primary aim of this cross-sectional population-based study was to evaluate the 1-year prevalence of common headache disorders by a face-to-face interview. Methods The fourth wave of Nord-Trøndelag ... -
The epidemiology of INSOMNIA in the Nord-Trøndelag Health Study
Uhlig, Benjamin Langsæter (Doctoral theses at NTNU;2019:363, Doctoral thesis, 2019) -
The HUNT4 study: the validity of questionnaire-based diagnoses
Hagen, Knut; Åsberg, Anders Nikolai; Uhlig, Benjamin Langsæter; Tronvik, Erling Andreas; Brenner, Eiliv; Sand, Trond (Journal article; Peer reviewed, 2019)Background Questionnaire-based headache diagnoses should be validated against diagnoses made by the gold standard, which is personal interview by a headache expert. The diagnostic algorithm with the best diagnostic accuracy ... -
The impact of extended electrodiagnostic studies in Ulnar Neuropathy at the elbow
Todnem, K; Michler, RP; Wader, TE; Engstrom, M; Sand, Trond (Journal article; Peer reviewed, 2009)Background: This study aimed to explore the value of extended motor nerve conduction studies in patients with ulnar nerve entrapment at the elbow (UNE) in order to find the most sensitive and least time-consuming method. ... -
The impact of headache and chronic musculoskeletal complaints on the risk of insomnia: longitudinal data from the Nord-Trondelag health study
Ødegård, Siv Steinsmo; Sand, Trond; Engstrøm, Morten; Zwart, John-Anker; Hagen, Knut (Journal article; Peer reviewed, 2013)Background A strong relationship between insomnia and painful disorders has been found, but it is still unclear whether chronic pain leads to insomnia. There is a need of large-scale prospective studies to evaluate if ... -
The joint effect of insomnia symptoms and lifestyle factors on risk of self-reported fibromyalgia in women: longitudinal data from the HUNT Study
Skarpsno, Eivind S.; Nilsen, Tom Ivar Lund; Sand, Trond; Hagen, Knut; Mork, Paul Jarle (Journal article; Peer reviewed, 2019)Objectives To investigate the association between insomnia symptoms and risk of self-reported fibromyalgia in women, and to explore whether leisure time physical activity and body mass index (BMI) modify this association ... -
The relationship between obstructive sleep apnea and insomnia: a population-based cross-sectional polysomnographic study.
Uhlig, Benjamin Langsæter; Hagen, Knut; Engstrøm, Morten; Stjern, Marit; Gravdahl, Gøril Bruvik; Sand, Trond (Journal article; Peer reviewed, 2018)Background The relationship between insomnia and objectively measured obstructive sleep apnea (OSA) severity has not previously been investigated in both genders in the general population. The main aim of this population-based ... -
Validation of questionnaires for restless legs syndrome in the general population: the Trøndelag Health Study (HUNT)
Filosa, James; Omland, Petter Moe; Hagen, Knut; Langsrud, Knut; Brenner, Eiliv; Knutsen, Andreas; Drange, Ole Kristian; Gravdahl, Gøril Bruvik; Stjern, Marit; Engstrøm, Morten; Sand, Trond (Peer reviewed; Journal article, 2022)Questionnaires for restless legs syndrome have rarely been validated against face-to-face interviews in the general population. We aimed to validate the modified Norwegian, seven-item Cambridge-Hopkins restless legs syndrome ... -
Visual evoked potentials in migraine: Is the "neurophysiological hallmark" concept still valid?
Hagen, Knut; Sand, Trond; Uglem, Martin; Tronvik, Erling Andreas; Linde, Mattias; Omland, Petter Moe (Journal article; Peer reviewed, 2016)Objective: Lack of habituation is considered a neurophysiological hallmark of migraine. However, the results of visual evoked potential (VEP) studies have been discrepant, possibly because of different stimulation parameters ... -
Which combined nerve conduction study scores are best suited for polyneuropathy in diabetic patients?
Dunker, Øystein; Nilsen, Kristian Bernhard; Olsen, Sandra Elise; Åsvold, Bjørn Olav; Bjørgaas, Marit Ragnhild Rokne; Sand, Trond (Peer reviewed; Journal article, 2021)Introduction/Aims Nerve conduction studies (NCS) are widely used in diagnosing diabetic polyneuropathy. Combining the Z scores of several measures (Z-compounds) may improve diagnostics by grading abnormality. We aimed to ... -
Work-Related Mental Fatigue, Physical Activity and Risk of Insomnia Symptoms: Longitudinal Data from the Norwegian HUNT Study
Skarpsno, Eivind S.; Nilsen, Tom Ivar Lund; Sand, Trond; Hagen, Knut; Mork, Paul Jarle (Journal article; Peer reviewed, 2019)Objective/Background: To examine the prospective association between work-related mental fatigue and risk of insomnia symptoms, and if leisure time physical activity modifies this association. Participants: A total of ...