| 1. |
- Thorsson, Sofia, 1972, et al.
(författare)
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Is Physiological Equivalent Temperature (PET) a superior screening tool for heat stress risk than Wet-Bulb Globe Temperature (WBGT) index? : Eight years of data from the Gothenburg half marathon
- 2021
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Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group Ltd. - 0306-3674 .- 1473-0480. ; 55:15, s. 825-830
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Tidskriftsartikel (refereegranskat)abstract
- Background: The Wet-Bulb Globe Temperature (WBGT) index is a common tool to screen for heat stress for sporting events. However, the index has a number of limitations. Rational indices, such as the physiological equivalent temperature (PET) and Universal Thermal Climate Index (UTCI), are potential alternatives. Aim: To identify the thermal index that best predicts ambulance-required assistances and collapses during a city half marathon. Methods: Eight years (2010-2017) of meteorological and ambulance transport data, including medical records, from Gothenburg's half-marathon were used to analyse associations between WBGT, PET and UTCI and the rates of ambulance-required assistances and collapses. All associations were evaluated by Monte-Carlo simulations and leave-one-out-cross-validation. Results: The PET index showed the strongest correlation with both the rate of ambulance-required assistances (R2=0.72, p=0.008) and collapses (R2=0.71, p=0.008), followed by the UTCI (R2=0.64, p=0.017; R2=0.64, p=0.017) whereas the WBGT index showed substantially poorer correlations (R2=0.56, p=0.031; R2=0.56, p=0.033). PET stages of stress, match the rates of collapses better that the WBGT flag colour warning. Compared with the PET, the WBGT underestimates heat stress, especially at high radiant heat load. The rate of collapses increases with increasing heat stress; large increase from the day before the race seems to have an impact of the rate of collapses. Conclusion: We contend that the PET is a better predictor of collapses during a half marathon than the WBGT. We call for further investigation of PET as a screening tool alongside WBGT.
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| 2. |
- Krath, Jeanine, et al.
(författare)
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Does behaviour match user typologies? An exploratory cluster analysis of behavioural data from a gamified fitness platform.
- 2022
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Ingår i: CEUR Workshop Proceedings. - RWTH Aachen : CEUR Workshop. - 1613-0073. ; , s. 105-114
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Konferensbidrag (refereegranskat)abstract
- A promising solution to increase user engagement in gamified applications is tailored gamification design. However, current personalisation relies primarily on user types identified through self-reporting rather than actual behaviour. As a novel approach, the present study used an exploratory machine learning analysis to identify seven clusters of users in a gamified fitness application based on their behavioural data (N = 19,576). The clusters were then conceptually compared to common user typologies in gamification, identifying possible relationships between behavioural user clusters and user types motivated by achievement, sociability, and extrinsic incentives. The findings shed light on nuanced behaviour patterns of user types in the fitness context and how knowing these patterns can inform the way in which tailored gamification could be implemented to meet the needs of specific types. Thereby, they contribute to the discussion on utilising behavioural data and user typologies for tailored gamification design.
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| 3. |
- Jonasson, Kalle, 1976-, et al.
(författare)
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Electronic sport and its impact on future sport
- 2010
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Ingår i: Sport in Society. - Abingdon : Informa UK Limited. - 1743-0437 .- 1743-0445. ; 13:2, s. 287-299
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Tidskriftsartikel (refereegranskat)abstract
- According to public health and media discourses, the mere mentioning of computer gaming (E-sport) as a form of sports might be considered subversive. As a matter of fact, the two practices are considered to be oppositional. Sports are often regarded as virtuous, whereas computer gaming is looked upon as a vice. In this light, the basic aim of this essay is to discuss and analyse the ‘sporting qualities’ of competitive computer gaming in relation to the definition of sport. The reasoning will also forecast the future of competitive computer gaming. How might this new form of ‘sport’ develop and what impact will it have on future sports in general? We answer the question by presenting three possible scenarios. Might it even be that we are standing on the threshold of a new phase in the evolution of sports?
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| 4. |
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| 5. |
- Wallenberg, Nils, 1986, et al.
(författare)
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The effects of warm weather on children’s outdoor heat stress and physical activity in a preschool yard in Gothenburg, Sweden
- 2023
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Ingår i: International Journal of Biometeorology. - 0020-7128 .- 1432-1254. ; 67:12, s. 1927-40
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Tidskriftsartikel (refereegranskat)abstract
- Hot weather conditions can have negative impacts on the thermal comfort and physical activity of vulnerable groups such as children. The aim of this study is to analyze the effects of warm weather on 5-year-old children’s thermal comfort and physical activity in a preschool yard in Gothenburg, Sweden. In situ measurements were conducted for 1–1.5 h in the early afternoon on 8 days in May, June, and August of 2022. The thermal comfort and physical activity was estimated with GPS-tracks, heart rate monitors, and step counts and compared to observed weather conditions. Results show that physical activity decreases under warmer weather conditions, depicted by a decrease in distance moved, step counts, and highest registered pulse. Moreover, on warm days, the children avoid sunlit areas. For 50% or more of the time spent in sunlit areas, the children are exposed to cautious levels of heat. In shaded areas, on the other hand, the children are less exposed, with five out of 8 days having 50% or more of the time at neutral levels. The study demonstrates the importance of access to shaded areas in preschool yards where children can continue their active play while simultaneously maintaining a safe thermal status.
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| 6. |
- Hedenborg, Susanna, et al.
(författare)
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Outdoorification of sports and recreation : a leisure transformation under the COVID-19 pandemic in Sweden
- 2024
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Ingår i: Annals of Leisure Research. - : Informa UK Limited. - 1174-5398 .- 2159-6816. ; 27:1, s. 36-54
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Tidskriftsartikel (refereegranskat)abstract
- Following the outbreak of the COVID-19 pandemic, most European countries imposed lockdowns, whereas Sweden introduced soft restrictions. Sports and physical activity could continue if conducted 'safely' and outdoor activities were even promoted if restrictions on the number of participants were not violated. The aim of this article is to demonstrate how the pandemic led to transitions and transformations of typical indoor sports activities to the outdoors and to outdoor recreation, or what we call an outdoorification process of sports and recreation, and how the changes were perceived by the population. Sweden is used as a case study. The inquiry is based on three studies involving more than 100 semi-structured interviews, two national questionnaire surveys and a regional-based PPGIS study. Based on the results, we argue that the outdoorification process is likely to influence how sport and recreation is understood and practiced also in the years after the pandemic.
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| 7. |
- Johansson, Moa, 1981, et al.
(författare)
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Pacing Patterns of Half-Marathon Runners: An analysis of ten years of results from Gothenburg Half Marathon
- 2023
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Ingår i: International Journal of Computer Science in Sport. - 1684-4769. ; 22:1, s. 124-138
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Tidskriftsartikel (refereegranskat)abstract
- The Gothenburg half Marathon is one of the word's largest half maratho races with over 40 000 participants each year. In order to reduce the number of runners risking over-straining, injury, or collapse, we would like to provide runners with advice to appropriately plan their pacing. Many participants are older or without extensive training experience and may particularly benefit from such pacing assistance. Our aim is to provide this with the help of machine learning. We first analyze a large publicly available dataset of results from the years 2010-2019 (n = 423 496) to identify pacing patterns related to age, sex, ability, and temperature of the race day. These features are then used to train machine learning models for predicting runner's finish time and to identify which runners are at risk of making severe pacing errors and which ones seem set to pace well. We finf that predictiong of finish time improves over the current baseline, while identification of pacing patterns correctly identifies over 70% of runners at risk of severe slowdowns, albeit with many false positives.
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| 8. |
- Karlsteen, Magnus, 1964, et al.
(författare)
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Combining Engineering Studies with Sports
- 2018
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Ingår i: American Association of Physics Teachers Winter meeting 2018.
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Konferensbidrag (refereegranskat)abstract
- The National Sport University in Gothenburg is a joint venture between Chalmers University of Technology and University of Gothenburg. It is an initiative from the Swedish National Sport Federation with the aim to support elite athlete students to combine their elite sport activities with higher education for dual careers. This could be achieved via individual study plans with allowances made to include training and event schedules. A part of this activity is the Sports and technology cluster at Chalmers, a facility where athletes, coaches, business and sports federations meet researchers, engineers and students to initiate advanced sports related research. The goal of this initiative, incorporating several scientific branches, is to enhance athlete’s performance and security across a range of sports, including sailing, swimming and equestrian. An important part of the business is also to create interesting projects that motivate all interested engineering students in their studies.
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| 9. |
- Bresin, Roberto, et al.
(författare)
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Auditory feedback through continuous control of crumpling sound synthesis
- 2008
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Ingår i: Proceedings of Sonic Interaction Design. - : IUAV University of Venice. - 9788890341304 ; , s. 23-28
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Konferensbidrag (refereegranskat)abstract
- A realtime model for the synthesis of crumpling sounds ispresented. By capturing the statistics of short sonic transients which give rise to crackling noise, it allows for a consistent description of a broad spectrum of audible physical processes which emerge in several everyday interaction contexts.The model drives a nonlinear impactor that sonifies every transient, and it can be parameterized depending on the physical attributes of the crumpling material. Three different scenarios are described, respectively simulating the foot interaction with aggregate ground materials, augmenting a dining scenario, and affecting the emotional content of a footstep sequence. Taken altogether, they emphasize the potential generalizability of the model to situations in which a precise control of auditory feedback can significantly increase the enactivity and ecological validity of an interface.
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| 10. |
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