| 1. |
- Andersén, Åsa, 1975-, et al.
(författare)
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Healthcare professionals' perceptions of the contributions of rehabilitation coordinators to patients in Swedish psychiatric care : a qualitative descriptive study
- 2024
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Ingår i: BMC Psychiatry. - : BioMed Central (BMC). - 1471-244X. ; 24:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Rehabilitation coordinators have gradually been introduced into Swedish psychiatric care to support individuals on sick leave to return-to-work or enter work.AimTo explore healthcare professionals' perspectives on the contributions a rehabilitation coordinator can make to patients in psychiatric care.Materials and methods: A descriptive qualitative design was used, and data were collected through interviews. Twelve healthcare professionals in psychiatric care participated in individual semi-structured interviews. Data were analysed using thematic analysis.Results: An overarching theme evolved: "The rehabilitation coordinator promotes security and reduces stress in the vocational rehabilitation process", based on two themes: (1) "Adaptations and support based on the patient's needs" and (2) "Rehabilitation coordinator efforts as relevant for care". The themes, in turn, consist of six subthemes.Conclusions: This study showed that healthcare professionals perceived employment as important for patients' health and well-being. Therefore, the rehabilitation coordination efforts were not only seen as beneficial for addressing patients' challenges and needs in managing the vocational rehabilitation process but also as an integral part of the patient's care.
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| 2. |
- Berglund, Erik, 1971-, et al.
(författare)
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Considerations for Player Enjoyment and Exertion in Casual Exergames
- 2024
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Ingår i: Proceedings of the 57th Hawaii International Conference on System Sciences. - : University of Hawai'i at Manoa. - 9780998133171 ; , s. 1328-1337
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Konferensbidrag (refereegranskat)abstract
- One approach to reduce sedentary behavior isthrough casual exergames, exergames with simplegame mechanics played during short time increments.Casual exergames have shown success in producingenjoyable experiences and sufficient levels of exertion.Yet, previous research has neglected what to considerin order to design enjoyable and exerting experiencesin casual exergames. The present work explores thisaspect through an exploratory mixed methodsresearch design, comparing the perceived exertionand enjoyment of four different casual exergames. Inrelation to traditional exergame guidelines werecommend that casual exergames focus on allowingfor high ambiguity of movements, balance thecognitive complexity of the game, and direct players’attention from the body by utilizing fast game pace.
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| 3. |
- Berglund, Erik
(författare)
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Novel Hessian-Based Algorithms for Unconstrained Optimization
- 2024
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- There are several benefits of taking the Hessian of the objective function into account when designing optimization algorithms. Compared to using strictly gradient-based algorithms, Hessian-based algorithms usually require fewer iterations to converge. They are generally less sensitive to tuning of parameters and can better handle ill-conditioned problems. Yet, they are not universally used, due to there being several challenges associated with adapting them to various challenging settings. This thesis deals with Hessian-based optimization algorithms for large-scale, stochastic, distributed, and zeroth-order problems. For the large-scale setting, we contribute with a new way of deriving limited memory quasi-Newton methods, which we show can achieve better results than traditional limited memory quasi-Newton methods with less memory for some logistic and linear regression problems. For the stochastic setting, we relax the secant condition used in traditional quasi-Newton methods and derive a novel quasi-Newton update that always preserves positive definiteness. Based on this, we develop an algorithm that exhibits linear convergence toward a neighborhood of the optimal solution, even if gradient and function evaluations are subject to bounded perturbations. For the distributed setting, we contribute with two different projects. Firstly, we perform an analysis of how the error of a Newton-step is affected by the condition number and the number of iterations of a consensus-algorithm based on averaging. We show that the number of iterations needed to solve a quadratic problem with relative error less than ε grows logarithmically with 1/ε and also with the condition number of the Hessian of the centralized problem. Secondly, we consider how Hessians and Hessian approximations can be used to compensate for communication delays in asynchronous implementations of the Incremental Aggregated Gradient (IAG) algorithm. We provide a general convergence theorem that can be used to analyze delay compensation using various Hessian approximations, apply it to the previously proposed Curvature-Aided IAG (CIAG), and propose delay compensation with some cheaper Hessian approximations that nevertheless outperform IAG without delay compensation. For the zeroth order setting, we exploit the fact that a finite difference estimate of the directional derivative works as an approximate sketching technique and use this to propose a zeroth order extension of a sketched Newton method that has been developed to solve large-scale problems. With the extension of this method to the zeroth order setting, we address the combined challenge of large-scale and zeroth order problems.
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| 4. |
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| 5. |
- Berglund, Aseel, 1973-, et al.
(författare)
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Liopep: A Gamified Casual Exergame Application to help Office Workers not be Active Couch Potatoes
- 2023
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Ingår i: Proceeding of the <em>2023 IEEE 11th International Conference on Serious Games and Applications for Health</em>. - : Institute of Electrical and Electronics Engineers (IEEE). - 9798350346077 - 9798350346084
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Konferensbidrag (refereegranskat)abstract
- Prolonged sedentary life is associated with several health risks. Office work is characterized by prolonged sedentary time and contributes significantly to the total sedentary exposure for office employees. This work aims to investigate the combination of casual exergames with gamification, two concepts that can impact behavior change, to decrease the prolonged sitting time for office workers, by interrupting long periods of sitting. A gamified web-based break application for micro-training using casual exergames and movement exercises was designed. A user study with office workers was conducted where workers had access to the application for 45 weeks, during which reward-based gamification was introduced in the application during an 11-week period and usage was compared before, during, and after the introduction of the reward-based game elements. The results showed that participants reported a positive experience of the application and that the breaks during the reward-based gamification period was higher compared to the period before and after the inclusion of the reward-based gamification.
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| 6. |
- Berglund, Aseel, 1973-, et al.
(författare)
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The Attractiveness and Effectiveness of Upper Body and Full Body Casual Exergame Controllers
- 2023
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Ingår i: <em>2023 IEEE 11th International Conference on Serious Games and Applications for Health</em>, SeGAH, IEEE, 2023. - : IEEE. - 9798350346077 - 9798350346084
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Konferensbidrag (refereegranskat)abstract
- Exergames, active videogames in which players use their bodies to control the game, have been successful under certain conditions to produce enjoyable experiences and physical benefits. Casual exergames have been developed with simple game mechanics and short game play durations with the intent to promote exertion. Previous research has suggested that using full body game controllers in exergames compared to upper body movements has greater potential in producing high levels of exertion. In the present work we explore the impact of using upper compared to full body exergame controllers on players’ level of perceived immersion, perceived control, and perceived exertion in the context of casual exergames. A between subject, quasi-experiment was conducted with 80 participants, playing the same casual exergame with either upper body movement controllers or full body movement controllers. The results showed a significant difference between groups in terms of perceived control but not in terms of perceived immersion or perceived exertion. Based on the findings we recommend that casual exergame designers do not overlook the use of upper body game controllers in casual exergames but consider them as an alternative to using full body game controllers.
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| 7. |
- Berglund, Erik, et al.
(författare)
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Physicians' experience of and collaboration with return-to-work coordinators in healthcare : a cross-sectional study in Sweden
- 2023
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Ingår i: Disability and Rehabilitation. - : Taylor & Francis. - 0963-8288 .- 1464-5165.
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Tidskriftsartikel (refereegranskat)abstract
- PurposeReturn-to-work coordinators (RTWCs) give people on sick leave individualized support and coordinate between different stakeholders, including physicians. The aim of this study was to explore physicians’ experience of RTWCs and investigate factors that influence how much physicians collaborate with RTWCs, or refer patients to them, in primary, orthopaedic, and psychiatric care clinics.Materials and methodsOf the 1229 physicians responding to a questionnaire, 629 physicians who had access to a RTWC in their clinic answered to questions about collaborating with RTWCs.ResultsAmong physicians who had access to a RTWC, 29.0% collaborated with a RTWC at least once a week. Physicians with a more favourable experience of RTWCs reported more frequent collaboration (adjusted OR 2.92, 95% CI 2.06–4.15). Physicians also collaborated more often with RTWCs if they reported to often deal with problematic sick-leave cases, patients with multiple diagnoses affecting work ability, and conflicts with patients over sickness certification.ConclusionsPhysicians who had more problematic sick-leave cases to handle and a favourable experience of RTWCs, also reported collaborating more often with RTWCs. The results indicate that RTWCs’ facilitation of contacts with RTW stakeholders and improvements in the sickness certification process may be of importance for physicians.Implications for RehabilitationThis study of physicians’ experience of collaborating with return-to-work coordinators (RTWCs) observes that physicians reported more collaboration with or referrals to coordinators if they had a favourable experience of coordinators.The results indicate that physicians report more collaboration with or referrals to RTWCs if they had more problematic sick-leave cases to handle in the clinic.These findings imply that it might be possible to increase the collaboration between physicians and RTWCs in clinical settings by managing factors of importance.
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| 8. |
- Berglund, Erik, et al.
(författare)
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Revisiting the Curvature-aided IAG : Improved Theory and Reduced Complexity
- 2023
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Ingår i: IFAC-PapersOnLine. - : Elsevier BV. - 2405-8963. ; 56:2, s. 5221-5226, s. 5221-5226
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Tidskriftsartikel (refereegranskat)abstract
- The curvature-aided IAG (CIAG) algorithm is an efficient asynchronous optimization method that accelerates IAG using a delay compensation technique. However, existing step-size rules for CIAG are conservative and hard to implement, and the Hessian computation in CIAG is often computationally expensive. To alleviate these issues, we first provide an easy-to-implement and less conservative step-size rule for CIAG. Next, we propose a modified CIAG algorithm that reduces the computational complexity by approximating the Hessian with a constant matrix. Convergence results are derived for each algorithm on both convex and strongly convex problems, and numerical experiments on logistic regression demonstrate their effectiveness in practice.
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| 9. |
- Berglund, Erik, 1971-, et al.
(författare)
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The Effect of Assigned Goals in Casual Exergames on Performance, Exertion and Enjoyment
- 2023
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Ingår i: In <em>2023 IEEE 11th International Conference on Serious Games and Applications for Health</em>, SeGAH, IEEE, 2023. - : Institute of Electrical and Electronics Engineers (IEEE). - 9798350346077 - 9798350346084
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Konferensbidrag (refereegranskat)abstract
- Casual exergames offer potential in decreasing sedentary behavior. Yet, little is known about how casual exergames can be designed to provide higher levels of physical effectiveness and psychological attractiveness. From the lens of goal setting theory, we explore if assigned goals affect players performance, exertion, and enjoyment in a casual exergame. A quasi-experimental design was applied, comparing the performance, exertion, and enjoyment during two game rounds for a group exposed to a specific goal setting prompt in the second game round, compared to a control group. Further analysis was conducted on how the participants changes in performance, exertion and enjoyment between game rounds was affected by either receiving or not receiving the goal setting prompt. The results support the notion that assigned goals in casual exergames result in higher performance, exertion, and enjoyment on a group level. Furthermore, the results showed that on an individual level the assigned goal resulted in a higher increase in exertion between game rounds, but not in performance nor enjoyment.
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| 10. |
- Berglund, Erik, et al.
(författare)
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The Potential of Seated and Standing Short Duration Casual Exergames to Increase Positive Affect
- 2023
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Ingår i: PROCEEDINGS OF THE 26TH INTERNATIONAL ACADEMIC MINDTREK, MINDTREK 2023. - : ASSOC COMPUTING MACHINERY. - 9798400708749 ; , s. 25-34
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Konferensbidrag (refereegranskat)abstract
- Decreasing sedentary behavior and taking active short duration breaks offers several positive benefits for office workers. One way to encourage active short duration breaks in an office environment is through the use of casual exergames. Previous research has shown that casual exergames offer benefits in terms of enjoyment, exertion, and increased positive affect. However, little is known about whether this holds true for short duration (e.g., 2 minutes) casual exergames and if seated compared to standing gameplay offers similar benefits. Through a quasi-experimental within-subjects design we investigated whether positive affect differs before and after short duration casual exergaming for seated and standing positions, and if seated compared to standing short duration casual exergaming differs in terms of positive affect, perceived exertion, enjoyment, and performance. The main results showed that short duration casual exergaming increased positive affect significantly for both standing and seated gameplay and that there were no differences between seated and standing gameplay in terms of positive affect, perceived exertion, enjoyment, and performance.
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