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Thorud, Hanne Mari Schiøtz - One of the best experts on this subject based on the ideXlab platform.

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexit

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2019
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexityacceptedVersio

  • Visual and psychological stress during Computer work in healthy, young females' physiological responses
    'Springer Science and Business Media LLC', 2018
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Among Computer workers, visual complaints, and neck pain are highly prevalent. This study explores how occupational simulated stressors during Computer work, like glare and psychosocial stress, affect physiological responses in young females with normal vision. Methods The study was a within-subject laboratory experiment with a counterbalanced, repeated design. Forty-three females performed four 10-min Computer-work sessions with different stress exposures: (1) minimal stress; (2) visual stress (direct glare); (3) psychological stress; and (4) combined visual and psychological stress. Muscle activity and muscle blood flow in trapezius, muscle blood flow in orbicularis oculi, heart rate, blood pressure, blink rate and postural angles were continuously recorded. Immediately after each Computer-work session, fixation disparity was measured and a questionnaire regarding perceived workstation lighting and stress was completed. Results Exposure to direct glare resulted in increased trapezius muscle blood flow, increased blink rate, and forward bending of the head. Psychological stress induced a transient increase in trapezius muscle activity and a more forward-bent posture. Bending forward towards the Computer screen was correlated with higher productivity (reading speed), indicating a concentration or stress response. Forward bent posture was also associated with changes in fixation disparity. Furthermore, during Computer work per se, trapezius muscle activity and blood flow, orbicularis oculi muscle blood flow, and heart rate were increased compared to rest. Conclusions Exposure to glare and psychological stress during Computer work were shown to influence the trapezius muscle, posture, and blink rate in young, healthy females with normal binocular vision, but in different ways. Accordingly, both visual and psychological factors must be taken into account when optimizing Computer Workstations to reduce physiological responses that may cause excessive eyestrain and musculoskeletal load

Mork Randi - One of the best experts on this subject based on the ideXlab platform.

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexit

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2019
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexityacceptedVersio

  • Visual and psychological stress during Computer work in healthy, young females' physiological responses
    'Springer Science and Business Media LLC', 2018
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Among Computer workers, visual complaints, and neck pain are highly prevalent. This study explores how occupational simulated stressors during Computer work, like glare and psychosocial stress, affect physiological responses in young females with normal vision. Methods The study was a within-subject laboratory experiment with a counterbalanced, repeated design. Forty-three females performed four 10-min Computer-work sessions with different stress exposures: (1) minimal stress; (2) visual stress (direct glare); (3) psychological stress; and (4) combined visual and psychological stress. Muscle activity and muscle blood flow in trapezius, muscle blood flow in orbicularis oculi, heart rate, blood pressure, blink rate and postural angles were continuously recorded. Immediately after each Computer-work session, fixation disparity was measured and a questionnaire regarding perceived workstation lighting and stress was completed. Results Exposure to direct glare resulted in increased trapezius muscle blood flow, increased blink rate, and forward bending of the head. Psychological stress induced a transient increase in trapezius muscle activity and a more forward-bent posture. Bending forward towards the Computer screen was correlated with higher productivity (reading speed), indicating a concentration or stress response. Forward bent posture was also associated with changes in fixation disparity. Furthermore, during Computer work per se, trapezius muscle activity and blood flow, orbicularis oculi muscle blood flow, and heart rate were increased compared to rest. Conclusions Exposure to glare and psychological stress during Computer work were shown to influence the trapezius muscle, posture, and blink rate in young, healthy females with normal binocular vision, but in different ways. Accordingly, both visual and psychological factors must be taken into account when optimizing Computer Workstations to reduce physiological responses that may cause excessive eyestrain and musculoskeletal load

Werner Osterhaus - One of the best experts on this subject based on the ideXlab platform.

  • discomfort glare assessment and prevention for daylight applications in office environments
    Solar Energy, 2005
    Co-Authors: Werner Osterhaus
    Abstract:

    Discomfort glare from daylight is a common problem in many office environments. It has been the subject of a significant body of research and many attempts have been made to develop reliable assessment and prediction models to address this problem. This paper reviews and discusses the advantages and limitations of using existing glare indices for daylighting conditions. It concludes that available assessment and prediction methods are of limited practical use in daylit situations and currently have no provision for integrated systems that combine daylighting and electric lighting. The paper also presents selected findings from a case study of daylit office environments which identify a number of important design considerations. On the basis of the discussion and the findings from the case study, additional research needs are identified to overcome current limitations. In the meantime, until results from such research are available and can be practically applied, this paper suggests ways to better integrate Computer Workstations in daylit offices.

Fostervold, Knut Inge - One of the best experts on this subject based on the ideXlab platform.

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexit

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2019
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexityacceptedVersio

  • Visual and psychological stress during Computer work in healthy, young females' physiological responses
    'Springer Science and Business Media LLC', 2018
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Among Computer workers, visual complaints, and neck pain are highly prevalent. This study explores how occupational simulated stressors during Computer work, like glare and psychosocial stress, affect physiological responses in young females with normal vision. Methods The study was a within-subject laboratory experiment with a counterbalanced, repeated design. Forty-three females performed four 10-min Computer-work sessions with different stress exposures: (1) minimal stress; (2) visual stress (direct glare); (3) psychological stress; and (4) combined visual and psychological stress. Muscle activity and muscle blood flow in trapezius, muscle blood flow in orbicularis oculi, heart rate, blood pressure, blink rate and postural angles were continuously recorded. Immediately after each Computer-work session, fixation disparity was measured and a questionnaire regarding perceived workstation lighting and stress was completed. Results Exposure to direct glare resulted in increased trapezius muscle blood flow, increased blink rate, and forward bending of the head. Psychological stress induced a transient increase in trapezius muscle activity and a more forward-bent posture. Bending forward towards the Computer screen was correlated with higher productivity (reading speed), indicating a concentration or stress response. Forward bent posture was also associated with changes in fixation disparity. Furthermore, during Computer work per se, trapezius muscle activity and blood flow, orbicularis oculi muscle blood flow, and heart rate were increased compared to rest. Conclusions Exposure to glare and psychological stress during Computer work were shown to influence the trapezius muscle, posture, and blink rate in young, healthy females with normal binocular vision, but in different ways. Accordingly, both visual and psychological factors must be taken into account when optimizing Computer Workstations to reduce physiological responses that may cause excessive eyestrain and musculoskeletal load

Falkenberg, Helle Kristine - One of the best experts on this subject based on the ideXlab platform.

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexit

  • Discomfort glare and psychological stress during Computer work: subjective responses and associations between neck pain and trapezius muscle blood flow
    'Springer Science and Business Media LLC', 2019
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Exposure to additional environmental stress during Computer work, such as visual and psychological demands, is associated with increased eye and neck discomfort, altered moods, and reduced well-being. The aim of this study is to elucidate further how subjective responses in healthy, young females with normal binocular vision are afected by glare and psychological stress during Computer work, and to investigate possible associations between trapezius muscle blood fow and neck pain development. Methods 43 females participated in a laboratory experiment with a within-subject design. Four 10-min Computer work conditions with exposure to diferent stressors were performed at an ergonomically optimal workstation, under the following series of conditions: no additional stress, visual stress (induced as direct glare from a large glare source), psychological stress, and combined visual and psychological stress. Before and immediately after each Computer work condition, questionnaires regarding diferent visual and eye symptoms, neck and shoulder symptoms, positive and negative state moods, perceived task difculty, and perceived ambient lighting were completed. Associations between neck pain and trapezius muscle blood fow were also investigated. Results Exposure to direct glare induced greater development of visual/eye symptoms and discomfort, while psychological stress exposure made participants feel more negative and stressed. The perception of work lighting during glare exposure was closely related to perceived stress, and associations between visual discomfort and eyestrain, and neck pain were observed in all conditions. Furthermore, participants with high trapezius muscle blood fow overall reported more neck pain, independent of exposure. Conclusions Exposure to visual and psychological stresses during Computer work afects the development of symptoms and negative moods in healthy, young females with normal binocular vision, but in diferent ways. The results also demonstrate the complex interactions involved in symptom development and lighting appraisal during Computer work. When optimizing Computer Workstations, the complexityacceptedVersio

  • Visual and psychological stress during Computer work in healthy, young females' physiological responses
    'Springer Science and Business Media LLC', 2018
    Co-Authors: Mork Randi, Falkenberg, Helle Kristine, Fostervold, Knut Inge, Thorud, Hanne Mari Schiøtz
    Abstract:

    Purpose Among Computer workers, visual complaints, and neck pain are highly prevalent. This study explores how occupational simulated stressors during Computer work, like glare and psychosocial stress, affect physiological responses in young females with normal vision. Methods The study was a within-subject laboratory experiment with a counterbalanced, repeated design. Forty-three females performed four 10-min Computer-work sessions with different stress exposures: (1) minimal stress; (2) visual stress (direct glare); (3) psychological stress; and (4) combined visual and psychological stress. Muscle activity and muscle blood flow in trapezius, muscle blood flow in orbicularis oculi, heart rate, blood pressure, blink rate and postural angles were continuously recorded. Immediately after each Computer-work session, fixation disparity was measured and a questionnaire regarding perceived workstation lighting and stress was completed. Results Exposure to direct glare resulted in increased trapezius muscle blood flow, increased blink rate, and forward bending of the head. Psychological stress induced a transient increase in trapezius muscle activity and a more forward-bent posture. Bending forward towards the Computer screen was correlated with higher productivity (reading speed), indicating a concentration or stress response. Forward bent posture was also associated with changes in fixation disparity. Furthermore, during Computer work per se, trapezius muscle activity and blood flow, orbicularis oculi muscle blood flow, and heart rate were increased compared to rest. Conclusions Exposure to glare and psychological stress during Computer work were shown to influence the trapezius muscle, posture, and blink rate in young, healthy females with normal binocular vision, but in different ways. Accordingly, both visual and psychological factors must be taken into account when optimizing Computer Workstations to reduce physiological responses that may cause excessive eyestrain and musculoskeletal load