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View article: Validation and comparative study of the Motus system for accurately identifying movement behaviours using different sampling frequencies
Validation and comparative study of the Motus system for accurately identifying movement behaviours using different sampling frequencies Open
Accurate data on movement behaviours is essential for public health policy and interventions. Accelerometer-based tools like ActiPASS, paired with AxivityX3 accelerometers, are widely used but face challenges like slow data processing and …
View article: Validation of sleep-wake estimation from thigh-worn accelerometers against polysomnography in adolescents with and without mental disorders
Validation of sleep-wake estimation from thigh-worn accelerometers against polysomnography in adolescents with and without mental disorders Open
View article: Developing an EMG-Based Distal Upper Extremity Tool for Assessing Risk of Distal Upper Extremity Symptoms: A Proof-of-Concept Comparative Evaluation
Developing an EMG-Based Distal Upper Extremity Tool for Assessing Risk of Distal Upper Extremity Symptoms: A Proof-of-Concept Comparative Evaluation Open
Work-related distal upper extremity (DUE) disorders are common in hand-intensive occupations due to cumulative strain. Existing assessment tools rely on subjective ratings and often fail to capture dynamic workload over varied work schedul…
View article: Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers – The PRECISE JEM
Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers – The PRECISE JEM Open
OBJECTIVES: Occupational physical activity (OPA) during pregnancy has been linked to adverse pregnancy outcomes, but crude exposure assessment remains an issue in causal inference. We aimed to develop a quantitative trimester-specific job …
View article: Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium
Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium Open
BACKGROUND: Sleep and physical activity (PA) are important lifestyle-related behaviors that impact cardiometabolic health. This study investigated the joint associations of daily step count and sleep patterns (regularity and duration) with…
View article: Associations of Device-Measured Sleep Duration, Regularity, and Efficiency with Cardiometabolic Health in Adults: Findings from the ProPASS Consortium
Associations of Device-Measured Sleep Duration, Regularity, and Efficiency with Cardiometabolic Health in Adults: Findings from the ProPASS Consortium Open
Background Sleep is critical for cardiometabolic health, yet evidence on the independent and combined associations of device-measured sleep parameters remains limited. The aim of this study is to examine the independent and joint associati…
View article: Associations between daily composition of 24 h physical behavior with affective states and working memory
Associations between daily composition of 24 h physical behavior with affective states and working memory Open
View article: Associations between knee pain and knee-loading physical activities at work and leisure – a cross-sectional study based on accelerometer measurements
Associations between knee pain and knee-loading physical activities at work and leisure – a cross-sectional study based on accelerometer measurements Open
View article: Comparing Physical Activity Metrics From Different Placements of Thigh-Worn Accelerometers
Comparing Physical Activity Metrics From Different Placements of Thigh-Worn Accelerometers Open
Background : Compared with other placements, thigh-worn accelerometers offer the advantage to accurately capture postures. However, the lack of standardized sensor placement on the thigh raises concerns about the comparability and harmoniz…
View article: Device-Measured 24-Hour Movement Behaviors and Blood Pressure: A 6-Part Compositional Individual Participant Data Analysis in the ProPASS Consortium
Device-Measured 24-Hour Movement Behaviors and Blood Pressure: A 6-Part Compositional Individual Participant Data Analysis in the ProPASS Consortium Open
BACKGROUND: Blood pressure (BP)–lowering effects of structured exercise are well-established. Effects of 24-hour movement behaviors captured in free-living settings have received less attention. This cross-sectional study investigated asso…
View article: Longitudinal Associations between 24-h Movement Behaviors and Cardiometabolic Biomarkers: A Natural Experiment over Retirement
Longitudinal Associations between 24-h Movement Behaviors and Cardiometabolic Biomarkers: A Natural Experiment over Retirement Open
Introduction Physical activity, sedentary behavior, and sleep, that is, 24-h movement behaviors, often change in the transition from work to retirement, which may affect cardiometabolic health. This study investigates the longitudinal asso…
View article: Changes in Accelerometer-Measured Physical Activity and Sedentary Time Across Retirement Transition as a Predictor of Self-Rated Health
Changes in Accelerometer-Measured Physical Activity and Sedentary Time Across Retirement Transition as a Predictor of Self-Rated Health Open
Background : Retirement transition has been shown to associate with changes in physical activity (PA) and self-rated health (SRH), but their interrelationship is less studied. The aim was to investigate changes in accelerometer-measured to…
View article: CHANGES IN PHYSICAL ACTIVITY, SEDENTARY TIME, AND SELF-RATED HEALTH ACROSS THE RETIREMENT TRANSITION
CHANGES IN PHYSICAL ACTIVITY, SEDENTARY TIME, AND SELF-RATED HEALTH ACROSS THE RETIREMENT TRANSITION Open
The aim was to investigate concurrent changes in accelerometer-measured total physical activity (TPA), moderate-to-vigorous physical activity (MVPA) and sedentary time, and changes in self-rated health across the retirement transition. Dat…
View article: Direct Observations of X-Rays Produced by Upward Positive Lightning
Direct Observations of X-Rays Produced by Upward Positive Lightning Open
X-rays have been observed in natural downward cloud-to-ground light-ning for over twenty years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leade…
View article: Direct Observations of X-Rays Produced by Upward Positive Lightning
Direct Observations of X-Rays Produced by Upward Positive Lightning Open
X-rays have been observed in natural downward cloud-to-ground lightning for over twenty years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leader…
View article: Direct Observations of X-Rays Produced by Upward Positive Lightning
Direct Observations of X-Rays Produced by Upward Positive Lightning Open
X-rays have been observed in natural downward cloud-to-ground lightning for over twenty years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leader…
View article: Device-measured physical activity type, posture, and cardiometabolic health markers: pooled dose-response associations from the ProPASS Consortium
Device-measured physical activity type, posture, and cardiometabolic health markers: pooled dose-response associations from the ProPASS Consortium Open
Aims/hypothesis To examine the dose-response associations between device-measured physical activity types and posture (sitting and standing time) with cardiometabolic health. Methods An individual participant harmonised meta-analysis of 12…
View article: Modifications of 24-h movement behaviors to prevent obesity in retirement: a natural experiment using compositional data analysis
Modifications of 24-h movement behaviors to prevent obesity in retirement: a natural experiment using compositional data analysis Open
View article: Modifications of 24-h movement behaviors to prevent obesity in retirement: A natural experiment using compositional data analysis
Modifications of 24-h movement behaviors to prevent obesity in retirement: A natural experiment using compositional data analysis Open
Background Retirement is associated with a more passive lifestyle, and may therefore lead to weight gain. This study aims to investigate longitudinal associations between changes in 24-h movement behaviors and obesity indicators in relatio…
View article: The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System
The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System Open
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 cha…
View article: X-rays associated with the stepping of upward negative leaders at the Säntis Tower: Preliminary results
X-rays associated with the stepping of upward negative leaders at the Säntis Tower: Preliminary results Open
<p>X-rays have been observed in downward cloud-to-ground lightning and rocket-triggered lightning for the case of negative leaders both during the leader stepping and the dart leader phase [1-3]. X-rays have also been observed during…
View article: The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System (Preprint)
The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System (Preprint) Open
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 ch…
View article: X-rays observations at the S&#228;ntis Tower: Preliminary results
X-rays observations at the Säntis Tower: Preliminary results Open
<p>X-ray production has been unambiguously observed in case of natural downward lightning and artificial rocket-and-wire lightning (e.g., [1],[2]). In the case of natural upward lightning, strong x-ray bursts have been observed from …
View article: Säntis Lightning Research Facility Instrumentation
Säntis Lightning Research Facility Instrumentation Open
The Säntis Tower was instrumented in May 2010 to measure currents of lightning discharges striking the tower. Since then the system has been recurrently updated and expanded. Currently, data associated with lightning strikes to the tower a…
View article: High-speed Video Observation of a Lightning Flash Producing X-rays
High-speed Video Observation of a Lightning Flash Producing X-rays Open
We report a well-documented case of a negative cloud-to-ground lightning dart leader producing x-rays. Four leaders in this seven-stroke flash followed the same path to ground. X-rays were only observed during the fifth leader before the r…
View article: Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages
Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages Open
We present observations of X-rays from laboratory sparks created in the air at atmospheric pressure by applying an impulse voltage with long (250 µs) rise-time. X-ray production in 35 and 46 cm gaps for three different electrode configurat…
View article: RELATIONSHIP BETWEEN THE LOW POSITIVE CHARGE REGION AND MULTIPLICITY OF RETURN STROKE IN NEGATIVE GROUND FLASH
RELATIONSHIP BETWEEN THE LOW POSITIVE CHARGE REGION AND MULTIPLICITY OF RETURN STROKE IN NEGATIVE GROUND FLASH Open
It is significantly important to investigate the relationship between the amplitudes of a Preliminary Breakdown Pulse (PBP) train and the corresponding first Return Stroke [RS], to define the relationship of the characteristics of lightnin…
View article: Measurements of X-Ray Emission from Laboratory Sparks and Upward Initiated Lightning
Measurements of X-Ray Emission from Laboratory Sparks and Upward Initiated Lightning Open
In 1925 Nobel laureate R. C. Wilson predicted that high electric fields of thunderstorms could accelerate electrons to relativistic energies which are capable of generating high energetic radiation. The first detection of X-rays from light…
View article: On the Possible Origin of Chaotic Pulse Trains in Lightning Flashes
On the Possible Origin of Chaotic Pulse Trains in Lightning Flashes Open
In this study, electromagnetic field radiation bursts known as chaotic pulse trains (CPTs) and regular pulse trains (RPTs) generated by lightning flashes were analyzed. Through a numerical analysis it was found that a typical CPT could be …
View article: Characteristics of Preliminary Breakdown Pulses in Positive Ground Flashes during Summer Thunderstorms in Sweden
Characteristics of Preliminary Breakdown Pulses in Positive Ground Flashes during Summer Thunderstorms in Sweden Open
This paper presents the characteristics of the preliminary breakdown pulses (PBP) in 51 positive ground flashes recorded during 2014 summer thunderstorms in Sweden. Electric field measurements were conducted remotely using a broadband ante…