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Sökning: LAR1:hig > Umeå universitet > Engelska

  • Resultat 121-130 av 358
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121.
  • Hallman, David, 1979-, et al. (författare)
  • P09-09 Hybrid work and temporal patterns of sedentary behavior in a 24-hour compositional perspective
  • 2022
  • Ingår i: European Journal of Public Health. - : Oxford Academic. - 1101-1262 .- 1464-360X. ; 32:Suppl2
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundDuring the COVID-19 pandemic, many white-collar workers were requested to exclusively work from home (WFH), which may have affected their sedentary behavior. In Sweden, having less severe restrictions than many other countries, workers were allowed to alternate between WFH and work at the office (WAO), so called hybrid work. Understanding how hybrid work influences total sedentary behavior and its temporal distribution is an important issue for future health promotion. This study aimed to investigate to what extent office workers changed their temporal pattern of sedentary behavior during days WFH compared to WAO, considering age and gender as potential moderators.MethodsData were collected from May to December 2020 in office workers (n = 199). Their mean age was 42 (SD 10) years and 55% were women. Physical behaviors were measured using a thigh-worn accelerometer (AxivityAX3) for seven consecutive days. A diary identified working hours, time-in-bed and days WFH or WAO. Time-use was classified as short (0-5 min), moderate (5-30 min) and long bouts (>30 min) of sedentary behavior (SB), non-SB, and time-in-bed during workdays (WAO and WFH) and non-workdays. We used Compositional data analysis to express data as 24-hour compositions and linear mixed models to estimate difference in 24-hour compositions between day types (within worker), including age and gender as covariates and moderators.ResultsWe found that workdays (WFH and WAO) were associated with proportionally less time-in-bed relative to time awake, more time SB relative to non-SB, and more time in longer relative to shorter sedentary bouts, compared to non-workdays (all p > 0.001). WFH was associated with more time-in-bed relative to awake and more SB relative to non-SB than WAO (p > 0.05), but the differences for sedentary bouts were not significant. Younger workers and women had more SB, and women accumulated more time than men in longer relative to shorter bouts of SB. However, age and gender did not affect differences between day types.ConclusionsWorking from home influenced 24-hour time-use in office workers by increasing sedentary behavior in total, while its temporal pattern was unchanged. Results contribute to evidence that can support organizational policies on hybrid work.
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122.
  • Hallman, David, 1979-, et al. (författare)
  • Sick leave due to musculoskeletal pain : determinants of distinct trajectories over 1 year
  • 2019
  • Ingår i: International Archives of Occupational and Environmental Health. - : Springer Science and Business Media LLC. - 0340-0131 .- 1432-1246. ; 92:8, s. 1099-1108
  • Tidskriftsartikel (refereegranskat)abstract
    • PurposeThis study aimed to identify sub-groups of workers with different trajectories of sick leave due to musculoskeletalpain over 1 year, and to investigate the extent to which the identified trajectories are associated with personal, occupational,lifestyle, and pain-related factors at baseline.MethodsData on 981 blue- and white-collar workers were analyzed in the DPHACTO cohort (2012–2014). The numberof days on sick leave due to pain was reported using text messages at 4-week intervals across 1 year. Latent class growthanalysis was used to distinguish sub-groups with different trajectories of sick leave. A web-based questionnaire at baselinewas used to assess personal, occupational (physical and psychosocial), lifestyle, and pain-related factors. Multinomial regressionmodels were constructed to determine associations between baseline factors and trajectories of sick leave (referencingno sick leave), with adjustment for potential confounders.ResultsFour distinct sub-groups were identified, with trajectories of sick leave due to pain ranging from no sick leave(prevalence 76%; average 0.5 days/year) to some days and increasing sick leave due to pain over 1 year (2%; 89 days/year).The increasing trajectory of sick leave was associated with higher perceived physical exertion, more time in manual work,less social community and influence at work, less leisure-time physical activity, smoking, and more severe symptoms (e.g.,multisite pain, low back pain intensity, and pain interference).ConclusionsWe identified four distinct trajectories of sick leave due to musculoskeletal pain. The sub-group with increasingsick leave due to pain was associated with several modifiable physical and psychosocial factors at work and outside work,which may have implications for prevention.
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123.
  • Hamberg, Jern, et al. (författare)
  • Stretchability of the rectus femoris muscle: investigation of validity and intratester reliability of two methods including x-ray analysis of pelvic tilt.
  • 1993
  • Ingår i: Archives of Physical Medicine and Rehabilitation. - 0003-9993 .- 1532-821X. ; 74:3, s. 263-270
  • Tidskriftsartikel (refereegranskat)abstract
    • Validity and intratester reliability of two test methods designed to identify stretchability of the rectus femoris muscle (RFM) was investigated, combined with x-ray analysis of pelvic tilt in the sagittal plane. The first method is commonly used in clinical practice. The second is a new technique supposed to tilt the pelvis posteriorly and thus further separate the origin and insertion of the muscle. Investigation of validity and intratester reliability of the two methods was made by testing and retesting a random sample of 71 persons. The tests were performed with an equipment that automatically recorded the angle of knee flexion from a previously determined applied torque, indicating the end point of motion for that particular subject. Angle of knee flexion and subjective estimation of pain sensation due to stretch were recorded at each measurement. The pelvic tilt-analysis consisted of test-retest reliability of x-ray measurements, comparison between the methods in both starting and final position, and x-ray and electronic goniometer measurements. All applied torques were measured with a strain gauge. Two out of three criteria of validity favored the new method and the third pointed out the two methods as equal. The two methods as well as the x-ray measurements showed high reliability, and the hypothesis of a more posterior tilted pelvis in the new method was confirmed. The electronic goniometer was less sensitive than x-ray, but proposed to analyse pelvic tilt clinically. Methodology procedures for joint angle measurements are discussed.
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124.
  • Hassel, Lars G., 1950-, et al. (författare)
  • Engagement dialogue as a Nordic sustianable and responsible investment (SRI) strategy
  • 2019
  • Ingår i: Challenges in managing sustainable business. - Basingstoke : Palgrave Macmillan. - 9783319932651 - 9783319932668 ; , s. 179-204
  • Bokkapitel (refereegranskat)abstract
    • This chapter explores engagement dialogue as a sustainable and responsible investment (SRI) strategy from a Nordic investor perspective. The Nordic model of engagement dialogue is grounded in the Nordic model of corporate governance and stakeholder capitalism. Based on a proprietary database from a professional SRI agent, this chapter conducts an in-depth analysis of engagement dialogue between Nordic institutional investors and MSCI World companies regarding environmental, social, and corruption risks. The main characteristics of the Nordic model of engagement dialogue are an incident-based approach, norm-based compliance, a small number of engagement cases, and long-term emphasis on risk reduction as opposed to short-term financial gains. The chapter notes that successful forms of engagement dialogue target global companies with higher levels of pre-engagement environmental, social and governance (ESG) performance, ESG transparency, and operating performance than a matched sample. Their performance remains superior to the matched sample in the post-engagement period. The chapter consequently extends previous literature on SRI strategies in the Anglo-Saxon model of activism based on shareholder resolutions, whereby companies are targeted owing to corporate governance risks and low financial performance.
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125.
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126.
  • Hassler, Sven, et al. (författare)
  • Causes of death in the Sami population of Sweden, 1961-2000.
  • 2005
  • Ingår i: International Journal of Epidemiology. - : Oxford University Press (OUP). - 0300-5771 .- 1464-3685. ; 34:3, s. 623-629
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Indigenous people often have a pattern of mortality that is disadvantageous in comparison with the general population. The knowledge on causes of death among the Sami, the natives of northern Scandinavia, is limited. The aim of the present study was to compare gender and cause specific mortality patterns for reindeer herding Sami, non-herding Sami, and non-Sami between 1961 and 2000. METHODS: A Sami cohort was constructed departing from a group of index-Sami identified as either reindeer herding Sami or Sami eligible to vote for the Sami parliament. Relatives of index-Sami were identified in the National Kinship Register and added to the cohort. The cohort contained a total of 41 721 people (7482 reindeer herding Sami and 34 239 non-herding Sami). A demographically matched non-Sami reference population four times as large, was compiled in the same way. Relative mortality risks were analysed by calculating standardized mortality ratios (SMRs). RESULTS: The differences in overall mortality and life expectancy of the Sami, both reindeer herding and non-herding, compared with the reference population were relatively small. However, Sami men showed significantly lower SMR for cancers but higher for external causes of injury. For Sami women, significantly higher SMR was found for diseases of the circulatory system and diseases of the respiratory system. An increased risk of dying from subarachnoid haemorrhage was observed among both Sami men and women. CONCLUSIONS: The similarities in mortality patterns are probably a result of centuries of close interaction between the Sami and the non-Sami, while the observed differences might be due to lifestyle, psychosocial and/or genetic factors.
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127.
  • Hassler, Sven, et al. (författare)
  • Fatal accidents and suicide among reindeer-herding Sami in Sweden
  • 2004
  • Ingår i: International Journal of Circumpolar Health. - 1239-9736 .- 2242-3982. ; 63 Suppl 2, s. 384-388
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. Over the last decades, reindeer-herding management has experienced drarnatic changes, e.g. increased motorization and socio-econornic pressure. The airn of the present study was to investigate whether these changes have increased the risk of fatal, work-related accidents and suicide between 1961 and 2000. Study design and methods. A c oh ort containing 7,482 members of reindeer-herding Sami families was extracted from national population registers. Information on fatal accidents and suicide was obtained from the Swedish Causes of Death Register, and compared to the expected number of deaths in a dernographica11y matched control population of non-Sami. Results. The ffiale reindeer her- ding Sami showed a significantly increased risk of dying from accidents such as vehicle accidents and poisoning. No significant increased risk of suicide was observed. A comparison between the periods of 1961-1980 and 1981- 2000 showed non-significant differences in risk, although a trend towards incre- ased risks was observed for most types of external causes of death except suicide. Conclusions. It is suggested that the increased socio-econornic pressure and the extensive use of terrain vehicles have increased the risk for fatal accidents arnong Swedish reindeer herders, and that commercial reindeer ma- nagement is one of the most dangerous occupations in Sweden
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128.
  • Heiden, Marina, et al. (författare)
  • A comparison of two strategies for building an exposure prediction model
  • 2016
  • Ingår i: Annals of Occupational Hygiene. - : Oxford University Press (OUP). - 0003-4878 .- 1475-3162. ; 60:1, s. 74-89
  • Tidskriftsartikel (refereegranskat)abstract
    • Cost-efficient assessments of job exposures in large populations may be obtained from models in which “true” exposures assessed by expensive measurement methods are estimated from easily accessible and cheap predictors. Typically, the models are built on the basis of a validation study comprising “true” exposure data as well as an extensive collection of candidate predictors from questionnaires or company data, which cannot all be included in the models due to restrictions in the degrees of freedom available for modeling. In these situations, predictors need to be selected using procedures that can identify the best possible subset of predictors among the candidates. The present study compares two strategies for selecting a set of predictor variables. One strategy relies on stepwise hypothesis testing of associations between predictors and exposure, while the other uses cluster analysis to reduce the number of predictors without relying on empirical information about the measured exposure. Both strategies were applied to the same dataset on biomechanical exposure and candidate predictors among computer users, and they were compared in terms of identified predictors of exposure as well as the resulting model fit using bootstrapped resamples of the original data. The identified predictors were, to a large part, different between the two strategies, and the initial model fit was better for the stepwise testing strategy than for the clustering approach. Internal validation of the models using bootstrap resampling with fixed predictors revealed an equally reduced model fit in resampled datasets for both strategies. However, when predictor selection was incorporated in the validation procedure for the stepwise testing strategy, the model fit was reduced to the extent that both strategies showed similar model fit. Thus, the two strategies would both be expected to perform poorly with respect to predicting biomechanical exposure in other samples of computer users.
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129.
  • Heiden, Marina, et al. (författare)
  • Autonomic activity, pain, and perceived health in patients on sick leave due to stress-related illnesses
  • 2005
  • Ingår i: Integrative Physiological & Behavioral Science. - 1053-881X .- 2168-7846. ; 40:1, s. 3-16
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: The aim of the present study was to compare autonomic activity, pressure-pain thresholds, and subjective assessments of health and behavior between patients with stress-related illnesses and healthy control subjects. Methods: Twenty sick-listed patients with stress-related disorders and 20 age- and gender-matched healthy subjects performed tests of autonomic regulation and algometric tests, and completed questionnaires about physical and mental health and behavioral patterns. Results: Patients exhibited higher autonomic reactivity to cognitive and physical laboratory tasks (p<0.05), and had lower pressure-pain thresholds in the shoulders and lower back than healthy control subjects (p<0.05). Furthermore, the patients rated considerably poorer health and health behavior than the control subjects (p<0.05). Conclusions: The results indicate an engagement of the autonomic nervous system in stress-related illnesses. Furthermore, they show that patients with stress-related illnesses experience strong symptoms of musculoskeletal pain, and it is therefore recommended that assessments of musculoskeletal pain be incorporated in the clinical examinations and the rehabilitation of patients with stress-related illnesses.
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130.
  • Heiden, Marina, et al. (författare)
  • Effects of time pressure and precision demands during computer mouse work on muscle oxygenation and position sense.
  • 2005
  • Ingår i: European journal of applied physiology. - : Springer Science and Business Media LLC. - 1439-6319 .- 1439-6327. ; 94:1-2, s. 97-106
  • Tidskriftsartikel (refereegranskat)abstract
    • The present study investigated the effects of time pressure and precision demands during computer mouse work on muscle oxygenation and position sense in the upper extremity. Twenty-four healthy subjects (12 males and 12 females) performed a 45-min standardized mouse operated computer task on two occasions. The task consisted of painting rectangles that were presented on the screen. On one occasion, time pressure and precision demands were imposed (more demanding task, MDT) whereas, on the other occasion, no such restraints were added (less demanding task, LDT). The order of the two task versions was randomized. Tissue oxygen saturation in the trapezius and extensor carpi radialis muscles was recorded throughout, and the position matching ability of the wrist was measured before and after the tasks. In addition, measurements of autonomic nervous system reactivity and subjective ratings of tenseness and physical fatigue were obtained. Performance was measured in terms of the number of rectangles that were painted during the task. During MDT, oxygen saturation in extensor carpi radialis decreased (p<0.05) compared to LDT. These data were paralleled by increased electrodermal activity (p<0.05), skin blood flow (p<0.05), ratings of tenseness and fatigue (p<0.01), and increased performance (p<0.01) during MDT. Females exhibited lower oxygen saturation than males, during rest as well as during the computer tasks (p<0.01). Wrist repositioning error increased following LDT as compared to MDT (p<0.05). In conclusion, computer mouse work under time pressure and precision demands caused a decrease in forearm muscle oxygenation, but did not affect wrist position sense accuracy. We attribute our changes in oxygenation more to increased oxygen consumption as a result of enhanced performance, than to vasoconstriction.
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