Paul Jarle Mork

Paul Jarle Mork
Norwegian University of Science and Technology | NTNU · Department of Public Health and Nursing

Dr Philos

About

131
Publications
36,743
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Introduction
Paul Jarle Mork works at the Department of Public Health and Nursing, Norwegian University of Science and Technology.

Publications

Publications (131)
Article
Full-text available
The objective was to investigate the association between self-reported sleep problems and risk of chronic pain in the low back and neck/shoulders, and whether physical exercise and body mass index (BMI) alter this association. The study comprised data on 26 896 women and men in the Nord-Trøndelag Health Study (Norway) without chronic pain or physic...
Article
Leisure time physical activity is recommended for preventing long-term sickness absence (LTSA). Although low back pain (LBP) is a risk factor for sickness absence and physical activity is recommended for people with LBP, it is unknown if leisure time physical activity prevents LTSA among persons with different levels of LBP. Prospective cohort stud...
Article
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Objectives: Several studies report reduced aerobic capacity in patients with fibromyalgia (FM). The purpose of our study was to investigate whether a reduction in aerobic capacity in these patients is accompanied by alterations in metabolic rate and heart rate (HR) response. Method: Twelve women with FM and 12 healthy controls (HCs) matched on s...
Article
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Background Muscle activity and pain development of fibromyalgia (FM) patients in response to mental stress show inconsistent results, when compared to healthy controls (HCs). A possible reason for the inconsistent results is the large variation in stress exposures in different studies. This study compares muscle responses of FM patients and HCs for...
Article
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Aim: The aim of this study was to prospectively investigate the association between leisure time physical exercise, body mass index (BMI) and risk of chronic arm pain. Methods: The study population comprises 14,041 women and 13,674 men in the Norwegian HUNT Study without musculoskeletal pain or physical impairment at baseline in 1984-86. Chronic...
Article
Although sleep quantity and quality appear to be interrelated, most previous studies have considered sleep duration and insomnia symptoms as distinct entities. We therefore examined whether there is a joint effect of sleep duration and long-term changes in insomnia symptoms on the risk of recurrent chronic spinal pain. We performed a prospective st...
Preprint
BACKGROUND mHealth solutions are a promising method for delivering tailored self-management interventions to patients with non-specific low back pain (LBP). However, it is not clear if the effectiveness of such self-management interventions depends on patients’ initial pain characteristics. High pain intensity and long-term symptoms of LBP have bee...
Article
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Background Individuals born small for gestational age (SGA) have an increased risk of several adverse health outcomes, but their health-related quality of life (HRQoL) across young adulthood has yet to be studied. The main aim of this study was to investigate if being born SGA at term is associated with poor HRQoL at 32 years of age. A second aim w...
Article
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Background Chronic musculoskeletal pain and insomnia frequently co-occur and are known independent risk factors for anxiety and depression. However, the interplay between these two conditions on the risk of anxiety and depression has not been explored. Methods A population-based prospective study of 18,301 adults in the Norwegian HUNT Study withou...
Preprint
BACKGROUND There is increasing recognition of the need for more comprehensive surveillance data, including information on physical activity of all intensities, sedentary behavior, and sleep. However, meeting this need poses significant challenges for current surveillance systems, which are mainly reliant on self-report. OBJECTIVE The primary objec...
Article
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Background: There is increasing recognition of the need for more comprehensive surveillance data, including information on physical activity of all intensities, sedentary behavior, and sleep. However, meeting this need poses significant challenges for current surveillance systems, which are mainly reliant on self-report. Objective: The primary o...
Chapter
Feature selection for case representation is an essential phase of Case-Based Reasoning (CBR) system development. To (semi-)automate the feature selection process can ease the knowledge engineering process. This paper explores the feature importance provided for XGBoost models as basis for creating CBR systems. We use Patient-Reported Outcome Measu...
Article
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Existing accelerometer-based human activity recognition (HAR) benchmark datasets that were recorded during free living suffer from non-fixed sensor placement, the usage of only one sensor, and unreliable annotations. We make two contributions in this work. First, we present the publicly available Human Activity Recognition Trondheim dataset (HARTH)...
Preprint
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In the HUNT Study, all residents aged ≥20 years in the Nord-Trøndelag region, Norway have been invited to repeated surveys since 1984-86. The study data may be linked to local and national health registries. The HUNT4 survey in 2017-19 included 56 042 participants in Nord-Trøndelag and 107 711 participants in the neighboring Sør-Trøndelag region. T...
Article
Background: Studies have indicated that shift work, in particular night work, is associated with chronic musculoskeletal pain but the mechanisms are unclear. It has been suggested that sleep disturbance, a common complaint among shift and night workers, may induce low-grade inflammation as well as heightened pain sensitivity. Aims: Firstly, this...
Article
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Introduction Low back pain (LBP) and neck pain (NP) are common and costly conditions. Self-management is a key element in the care of persistent LBP and NP. Artificial intelligence can be used to support and tailor self-management interventions, but their effectiveness needs to be ascertained. The aims of this trial are (1) to evaluate the effectiv...
Article
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The field of patient-centred healthcare has, during recent years, adopted machine learning and data science techniques to support clinical decision making and improve patient outcomes. We conduct a literature review with the aim of summarising the existing methodologies that apply machine learning methods on patient-reported outcome measures datase...
Article
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Importance: Lower back pain (LBP) is a prevalent and challenging condition in primary care. The effectiveness of an individually tailored self-management support tool delivered via a smartphone app has not been rigorously tested. Objective: To investigate the effectiveness of selfBACK, an evidence-based, individually tailored self-management sup...
Article
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Sleep problems and regular leisure time physical activity (LTPA) are interrelated and have contrasting effects on risk of back pain. However, no studies have investigated the influence of long-term poor sleep quality on risk of back-related disability, or if LTPA modifies this association. The study comprised data on 8601 people who participated in...
Article
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Objective To examine the association between subtypes of insomnia and the risk of chronic spinal pain. Methods The study comprised 16,401 participants without chronic spinal pain at baseline who were followed for ∼11 years. People were categorized into ‘no insomnia symptoms’, ‘subthreshold insomnia’, and ‘insomnia’. Insomnia was defined according...
Preprint
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During the early stages of developing Case-Based Reasoning (CBR) systems the definition of similarity measures is challenging since this task requires transferring implicit knowledge of domain experts into knowledge representations. While an entire CBR system is very explanatory, the similarity measure determines the ranking but do not necessarily...
Article
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We examined the association between long-term (~10 years) changes in self-reported sleep quality and risk of any chronic musculoskeletal pain and chronic widespread pain. The study comprised data on 6,033 people who participated in three consecutive surveys in the Norwegian HUNT Study (1995-1997, 2006-2008 and 2017-2019) and who were without chroni...
Article
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Background: Research shows that part of the variation in physical activity and sedentary behaviour may be explained by genetic factors. Identifying genetic variants associated with physical activity and sedentary behaviour can improve causal inference in physical activity research. The aim of this systematic review was to provide an updated overvi...
Article
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Background Co-occurring musculoskeletal pain is common among people with persistent low back pain (LBP) and associated with more negative consequences than LBP alone. The distribution and prevalence of musculoskeletal pain co-occurring with persistent LBP has not been systematically described, which hence was the aim of this review. Methods Litera...
Article
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Introduction : Accelerometer-based measurements of physical activity types are commonly used to replace self-reports. To advance the field, it is desirable that such measurements allow accurate detection of key daily physical activity types. This study aimed to evaluate the performance of a machine learning classifier for detecting sitting, standin...
Preprint
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BACKGROUND International guidelines consistently endorse promotion of self-management for people with low back pain (LBP), however, implementation of these guidelines remains a challenge. Digital health interventions, such as those that can be provided by smartphone apps, have been proposed as a promising mode to support self-management in people w...
Article
Background: International guidelines consistently endorse the promotion of self-management for people with low back pain (LBP); however, implementation of these guidelines remains a challenge. Digital health interventions, such as those that can be provided by smartphone apps, have been proposed as a promising mode of supporting self-management in...
Article
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Introduction The Prospective Physical Activity Sitting and Sleep consortium (ProPASS) is an international collaboration platform committed to harmonise thigh-worn accelerometry data. The aim of this paper is to (1) outline observational thigh-worn accelerometry studies and (2) summarise key strategic directions arising from the inaugural ProPASS me...
Article
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Study objectives: To examine the association between the number of chronic nighttime insomnia symptoms and the risk of chronic widespread pain (CWP) and pain-related disability. Methods: A prospective study of 10,847 participants in the Norwegian HUNT Study without chronic musculoskeletal pain at baseline in 2006-2008. We used a modified Poisson...
Article
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Background Implementation and process evaluation is vital for understanding how interventions function in different settings, including if and why interventions have different effects or do not work at all. Objective This paper presents the protocol for an implementation and process evaluation embedded in a multicenter randomized controlled trial...
Article
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Background: Very few of the publicly available apps directed towards self-management of low back pain (LBP) have been rigorously tested and their theoretical underpinnings seldom described. The selfBACK app was developed in collaboration with end-users and clinicians and its content is supported by best evidence on self-management of LBP. The obje...
Preprint
BACKGROUND Background Implementation and process evaluation is vital for understanding how interventions function in different settings, including if and why interventions have different effects, or do not work at all. This paper presents the protocol for an implementation and process evaluation embedded in a multicentre randomized controlled trial...
Article
Full-text available
Background: We investigated the feasibility of a 16-week supervised heavy resistance training program with weekly undulating periodization for individuals with persistent non-specific low-back pain (LBP). Methods: Twenty-five adults with persistent non-specific LBP participated in this mixed methods feasibility study. Participants trained a whol...
Article
Objective To investigate whether a family history of LBP influences patient outcomes and treatment effects following home-exercises in older people with chronic LBP. Design Secondary analysis of a randomised controlled trial. Setting Local community. Participants: People over 55 years old with chronic LBP. Interventions Participants in the inter...
Preprint
BACKGROUND Self-management is the key recommendation for managing non-specific low back pain (LBP). However, there are well-documented barriers to self-management, therefore methods of facilitating adherence are required. Smartphone apps are increasingly being used to provide feedback and reinforcement to support self-management of long-term condit...
Article
Full-text available
Background: Self-management is the key recommendation for managing nonspecific low back pain (LBP). However, there are well-documented barriers to self-management; therefore, methods of facilitating adherence are required. Smartphone apps are increasingly being used to support self-management of long-term conditions such as LBP. Objective: The a...
Preprint
Full-text available
Background We investigated the feasibility of a 16-week supervised heavy resistance training program with weekly undulating periodization for individuals with persistent non-specific low-back pain (LBP). Methods Twenty-five adults with persistent non-specific LBP participated in this mixed methods feasibility study. Participants trained a whole-bod...
Preprint
Full-text available
Background: We investigated the feasibility of a 16-week supervised heavy resistance training program with weekly undulating periodization for individuals with persistent non-specific low-back pain (LBP). Methods: Twenty-five adults with persistent non-specific LBP participated in this mixed methods feasibility study. Participants trained a whole-b...
Preprint
Full-text available
Background: We investigated the feasibility of a 16-week supervised heavy resistance training program with weekly undulating periodization for individuals with persistent non-specific low-back pain (LBP). Methods: Twenty-five adults with persistent non-specific LBP participated in this mixed methods feasibility study. Participants trained a whole-b...
Article
Background and objective: Clinical guidelines recommend physical activity to manage neck pain (NP) and low back pain (LBP). However, studies used to support these guidelines are based on self-reports of physical behaviour which are prone to bias and misclassification. This systematic review aimed to investigate associations between objectively mea...
Article
We investigated if parental multi-site chronic pain increases the risk of adult offspring developing additional chronic pain sites, and if offspring body mass index (BMI) and leisure time physical activity modify this association. We used longitudinal data on 7,654 offspring linked with their parents who participated in the population-based HUNT St...
Article
Background We investigated the influence of sleeplessness and number of insomnia symptoms on the probability of recovery from chronic low back pain (LBP), and the possible interplay between sleeplessness and co-occurring musculoskeletal pain on this association. Methods The study comprised data on 3712 women and 2488 men in the Norwegian HUNT stud...
Chapter
In this paper, we demonstrate a data-driven methodology for modelling the local similarity measures of various attributes in a dataset. We analyse the spread in the numerical attributes and estimate their distribution using polynomial function to showcase an approach for deriving strong initial value ranges of numerical attributes and use a non-ove...
Article
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Background: Pooling data from thigh-worn accelerometers across multiple studies has great potential to advance evidence on the health benefits of physical activity. This requires harmonization of information on body postures, physical activity types, volumes and time patterns across different brands of devices. The aim of this study is to compare...
Article
Full-text available
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. Design Prospective cohort study. Setting We used longitudinal data from the Norwegian Nord-Trøndelag Health Study collected in...
Article
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 8,464 women and 7,480 men who participated in two consecutive surveys of the Norwegian HUNT study. Methods: The study comprises long...
Article
Study Objectives To examine independent associations of sleeplessness and high-sensitivity C-reactive protein (hsCRP) with risk of chronic musculoskeletal pain, and to explore the joint effect of sleeplessness and hsCRP on risk of chronic musculoskeletal pain. Methods A population-based prospective study of 3,214 women and 3,142 men (mean age 55.4...
Preprint
Full-text available
In this paper, we demonstrate a data-driven methodology for modelling the local similarity measures of various attributes in a dataset. We analyse the spread in the numerical attributes and estimate their distribution using polynomial function to showcase an approach for deriving strong initial value ranges of numerical attributes and use a non-ove...
Preprint
BACKGROUND Low back pain (LBP) is prevalent across all social classes, in all age groups and across industrialised as well as developing countries. From a global perspective LBP is considered the leading cause of disability and it negatively impacts everyday life and wellbeing. Self-management is a recommended first-line treatment and mobile applic...
Article
Background: Low back pain (LBP) is prevalent across all social classes, in all age groups, and across industrialized and developing countries. From a global perspective, LBP is considered the leading cause of disability and negatively impacts everyday life and well-being. Self-management is a recommended first-line treatment, and mobile apps are a...
Article
Full-text available
Galileo Galilei’s quote ‘measure what is measurable, and make measurable what is not so’ has particular relevance to health behaviours, such as physical activity (PA), sitting and sleep, whose measurement during free living is notoriously difficult. To date, much of what we know about how these behaviours affect our health is based on self-report b...
Article
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Purpose To investigate if occupational physical activity (OPA) and leisure-time physical activity (LTPA) influence the association between musculoskeletal pain and sleep problems. Methods Cross-sectional study includes 678 workers in the Danish PHysical ACTivity cohort with Objective measurements (DPhacto). Musculoskeletal pain was assessed by que...
Article
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This paper presents the design of a Clinician Dashboard to promote co-decision making between patients and clinicians. Targeted patients are those with non-specific low back pain, a leading cause of discomfort, disability and absence from work throughout the world. Targeted clinicians are those in primary care, including general practitioners, phys...
Article
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Objective: To assess recovery of grip strength during the first year post-stroke. Design: Exploratory study on a subsample of patients participating in the Norwegian Constraint-Induced Movement Therapy trial. Subjects: Eleven patients (mean age 59.1 years; 3 women) with mild to moderate stroke were recruited 7–29 days post-stroke. Methods: An elect...
Article
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Background Various occupational inpatient rehabilitation programs are established in Norway. This study aimed to assess change in cardiorespiratory fitness, pain, anxiety, depression, and quality of life in persons on long-term sick leave due to musculoskeletal-, mental or unspecific disorders after participation in multicomponent inpatient occupat...
Article
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Background: Sedentary behavior is thought to pose different risks to those attributable to physical inactivity. However, few studies have examined the association between physical activity and sitting time with cancer incidence within the same population. Methods: We followed 38,154 healthy Norwegian adults in the Nord-Trøndelag Health Study (HU...
Data
Joint associations of sitting and PA with total cancer—crude estimates in men. (PDF)
Data
Joint associations of sitting and PA with colorectal cancer–adjusted estimates in women. (PDF)
Article
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Objectives To investigate the influence of parental chronic spinal pain on prognosis of chronic spinal pain in adult offspring, and whether offspring physical activity level and body mass index (BMI) modified this association. Design Prospective cohort study. Setting We used family-linked longitudinal data from the Norwegian HUNT study collected...
Article
Full-text available
Introduction: Socioeconomic health differences have often been described, but remain insufficiently understood. Recent evidence suggests that workers who are high (compared with low) physically active at work are less healthy. Moreover, workers who are highly physically active at work are predominantly physically inactive during leisure time. Thes...
Article
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Objective: To investigate whether progressive resistance training using elastic resistance bands improves neck-related disability more than general physical exercise in multidisciplinary rehabilitation of chronic neck pain. Design: Researcher-blinded, randomized controlled trial. Methods: A total of 59 patients with non-specific, chronic neck...