| 1. |
- Backman, Erik, et al.
(författare)
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Idrottslärarutbildning för framtiden
- 2013
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Ingår i: I takt med tiden?. - Lund : Studentlitteratur AB. - 9789144086682 ; , s. 243-256
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 2. |
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| 3. |
- Carlsson, Bo, professor, et al.
(författare)
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STIHL Timbersports(R) and the Reconceptualization of Modern Sport in the Light of Decontextualization and Eventification of Forestry Work
- 2022
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Ingår i: Social Sciences. - : MDPI. - 2076-0760. ; 11:3
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Tidskriftsartikel (refereegranskat)abstract
- This article examines STIHL Timbersports(R) and its amalgamation of craftmanship, competition, eventification and branding, through the lens of decontextualization of sport. It thus revisits and revitalizes the concept of sportification, as well as discusses the characteristics of sport such as authenticity and "uncertainty of outcome". The aim of the article is to grasp the different processes that challenge our common positions regarding sport, which may in turn progress sport beyond the prevalent conceptualization of modern sport.
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| 4. |
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Critical Research in Sport, Health and Physical Education : How to make a difference
- 2018
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Samlingsverk (redaktörskap) (refereegranskat)abstract
- Within the overlapping fields of the sociology of sport, physical education and health education, the use of critical theories and the critical research paradigm has grown in scope. Yet what social impact has this research had?This book considers the capacity of critical research and associated social theory to play an active role in challenging social injustices or at least in ‘making a difference’ within health and physical education (HPE) and sporting contexts. It also examines how the use of different social theories impacts sport policies, national curricula and health promotion activities, as well as the practices of HPE teaching and sport training and competition.Critical Research in Sport, Health and Physical Education is a valuable resource for academics and students working in the fields of research methods, sociology of sport, physical education and health.
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| 5. |
- Danielsson, Tom, 1969-, et al.
(författare)
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Aerobic capacity predict skeletal but not cardiac muscle damage after triathlon : the Iron(WO)man study
- 2020
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Ingår i: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 10:1, s. 1-7
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Tidskriftsartikel (refereegranskat)abstract
- This study examines the association between aerobic capacity and biomarkers of skeletal- and cardiac muscle damage among amateur triathletes after a full distance Ironman. Men and women (N = 55) were recruited from local sport clubs. One month before an Ironman triathlon, they conducted a 20 m shuttle run test to determine aerobic capacity. Blood samples were taken immediately after finishing the triathlon, and analyzed for cardiac Troponin T (cTnT), Myosin heavy chain-a (MHC-a), N-terminal prohormone of brain natriuretic peptide (NT-proBNP), Creatin Kinas (CK), and Myoglobin. Regression models examining the association between the biomarkers and aerobic capacity expressed in both relative terms (mLO2*kg−1*min−1) and absolute terms (LO2*min−1) controlled for weight were fitted. A total of 39 subjects (26% females) had complete data and were included in the analysis. No association between aerobic capacity and cardiac muscle damage was observed. For myoglobin, adding aerobic capacity (mLO2*kg−1*min−1) increased the adjusted r2 from 0.026 to 0.210 (F: 8.927, p = 0.005) and for CK the adjusted r2 increased from -0.015 to 0.267 (F: 13.778, p = 0.001). In the models where aerobic capacity was entered in absolute terms the adjusted r2 increased from 0.07 to 0.227 (F: 10.386, p = 0.003) for myoglobin and for CK from -0.029 to 0.281 (F: 15.215, p < 0.001). A negative association between aerobic capacity and skeletal muscle damage was seen but despite the well-known cardio-protective health effect of high aerobic fitness, no such association could be observed in this study.
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| 6. |
- Danielsson, Tom, 1969-, et al.
(författare)
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Blood biomarkers in male and female participants after an Ironman-distance triathlon
- 2017
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Ingår i: PLOS ONE. - : PLOS. - 1932-6203. ; 12:6, s. 1-9
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: While overall physical activity is clearly associated with a better short-term and long-term health, prolonged strenuous physical activity may result in a rise in acute levels of blood-biomarkers used in clinical practice for diagnosis of various conditions or diseases. In this study, we explored the acute effects of a full Ironman-distance triathlon on biomarkers related to heart-, liver-, kidney- and skeletal muscle damage immediately post-race and after one week's rest. We also examined if sex, age, finishing time and body composition influenced the post-race values of the biomarkers.METHODS: A sample of 30 subjects was recruited (50% women) to the study. The subjects were evaluated for body composition and blood samples were taken at three occasions, before the race (T1), immediately after (T2) and one week after the race (T3). Linear regression models were fitted to analyse the independent contribution of sex and finishing time controlled for weight, body fat percentage and age, on the biomarkers at the termination of the race (T2). Linear mixed models were fitted to examine if the biomarkers differed between the sexes over time (T1-T3).RESULTS: Being male was a significant predictor of higher post-race (T2) levels of myoglobin, CK, and creatinine levels and body weight was negatively associated with myoglobin. In general, the models were unable to explain the variation of the dependent variables. In the linear mixed models, an interaction between time (T1-T3) and sex was seen for myoglobin and creatinine, in which women had a less pronounced response to the race.CONCLUSION: Overall women appear to tolerate the effects of prolonged strenuous physical activity better than men as illustrated by their lower values of the biomarkers both post-race as well as during recovery.
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| 7. |
- Ekstedt, Mirjam, et al.
(författare)
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Sleep, physical activity and BMI in six to ten-year-old children measured by accelerometry: a cross-sectional study.
- 2013
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Ingår i: International Journal of Behavioral Nutrition and Physical Activity. - : Springer Science and Business Media LLC. - 1479-5868. ; 22:10, s. 82-89
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND:The aim of this study is to describe the relationship between objective measures of sleep, physical activity and BMI in Swedish pre-adolescents. The day-to-day association between physical activity and sleep quality as well as week-day and weekend pattern of sleep is also described.METHOD:We conducted a cross sectional study consisted of a cohort of 1.231 children aged six to ten years within the Stockholm county area. Sleep and physical activity were measured by accelerometry during seven consecutive days. Outcome measures are total sleep time, sleep efficiency, sleep start and sleep end; physical activity intensity divided into: sedentary (<1.5 METS), light (1.5 to 3 METS) and moderate-to-vigorous (> 3 METS); and Body Mass Index standard deviations score, BMIsds.RESULTS:Total sleep time decreased with increasing age, and was shorter in boys than girls on both weekdays and weekends. Late bedtime but consistent wake-up time during weekends made total sleep time shorter on weekends than on weekdays. Day-to-day within-subject analysis revealed that moderate-to-vigorous intense physical activity promoted an increased sleep efficiency the following night (CI < 0.001 to 0.047), while total sleep time was not affected (CI -0.003 to 0.043). Neither sleep duration (CI -0.024 to 0.022) nor sleep efficiency (CI -0.019 to 0.028) affected mean physical activity level the subsequent day. The between-subject analysis indicates that the sleep of children characterized by high moderate-to-vigorous physical activity during the day was frequently interrupted (SE = -.23, P < .01). A negative association between BMIsds and sleep duration was found (-.10, p < .01).CONCLUSIONS:Short sleep duration was associated with high BMI in six to ten year old children. This study underscores the importance of consistent bedtimes throughout the week for promoting sleep duration in preadolescents. Furthermore, this study suggests that a large proportion of intensive physical activity during the day might promote good sleep quality.
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| 8. |
- Flockhart, Mikael, et al.
(författare)
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Glucosinolate-rich broccoli sprouts protect against oxidative stress and improve adaptations to intense exercise training.
- 2023
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Ingår i: Redox Biology. - : Elsevier. - 2213-2317. ; 67
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Tidskriftsartikel (refereegranskat)abstract
- Oxidative stress plays a vital role for the adaptive responses to physical training. However, excessive oxidative stress can precipitate cellular damage, necessitating protective mechanisms to mitigate this effect. Glucosinolates, found predominantly in cruciferous vegetables, can be converted into isothiocyanates, known for their antioxidative properties. These compounds activate crucial antioxidant defence pathways and support mitochondrial function and protein integrity under oxidative stress, in both Nrf2-dependent and independent manners. We here administered glucosinolate-rich broccoli sprouts (GRS), in a randomized double-blinded cross-over fashion to 9 healthy subjects in combination with daily intense exercise training for 7 days. We found that exercise in combination with GRS significantly decreased the levels of carbonylated proteins in skeletal muscle and the release of myeloperoxidase into blood. Moreover, it lowered lactate accumulation during submaximal exercise, and attenuated the severe nocturnal hypoglycaemic episodes seen during the placebo condition. Furthermore, GRS in combination with exercise improved physical performance, which was unchanged in the placebo condition.
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| 9. |
- Gerdin, Göran, 1980-, et al.
(författare)
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(Dis)pleasurable boys' bodies materialising in PE
- 2017
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Ingår i: Presented at BERA (British Educational Research Association, Brighton, UK, 5-8/9 2017.
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Konferensbidrag (refereegranskat)abstract
- Pleasure is often a key feature of school physical education (PE) and, indeed, a lot of students find pleasure in and through PE while others do not. However, pleasure is rarely considered to be of educational value in the subject. Further, since pleasure is linked to power it is in fact not entirely straightforward to legitimise the educational value of PE in relation to pleasure. In this paper, we will explore how a group of boys derive pleasures from their involvement in PE, but also how these power-induced pleasures are integral to gender normalisation processes.The paper draws on ethnographic data from a single-sex, boys’ secondary school in New Zealand involving 60 Year 10 (age 14-15) students. Using a visual ethnographic approach (Pink, 2007) consisting of observations and video recordings of boys participating in PE, the boys’ representations and interpretations of the visual data were explored during both focus groups and individual interviews. The data was analysed using (a visually oriented) discourse analysis (Foucault, 1980; Rose, 2007).By elucidating the discursive practices of PE in this setting and employing Butler’s (1993) concept of ‘materialisation’, we argue that boy’s bodies materialise as productive and pleasurable or displeasurable bodies through submitting/subjecting to certain bodily regimes, developing embodied mastery when it comes to certain sports, and displaying bodies in particular ways. The analysis indicates that the discursive practices of PE contribute to boys’ bodies materialising as pleasurable or dis-pleasurable and the (re)production of gender in the subject as shaped by discourse and the productive effect of power.We conclude that the focus on certain discursively constructed bodily practices at the same time continues to restrict the production of a diversity of bodily movement pleasures. Hence, traditional gender patterns are reproduced through a selection of particular sports/physical activities that all the students are expected to participate in. We propose that the ongoing constitution of privileged forms of masculinity, masculine bodies and masculine pleasures as related to fitness, health and sport and (certain) boys’ subsequent exercise of power in PE needs further critical examination.
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| 10. |
- Gerdin, Göran, 1980-, et al.
(författare)
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The productive effect of power : (dis)pleasurable bodies materialising in and through the discursive practices of boys’ physical education
- 2018
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Ingår i: Physical Education and Sport Pedagogy. - : Routledge. - 1740-8989 .- 1742-5786. ; 23:1, s. 66-83
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Tidskriftsartikel (refereegranskat)abstract
- Background: Pleasure is often a key feature of school physical education (PE) and, indeed, a lot of students find pleasure in and through PE while others do not. However, pleasure is rarely considered to be of educational value in the subject (Pringle, 2010). Further, since pleasure is linked to power (Foucault, 1980; Gerdin & Pringle, 2015) it is in fact not entirely straightforward to legitimise the educational value of PE in relation to pleasure.Purpose: In this paper, we explore how a group of boys derive pleasures from their involvement in PE, but also how these power-induced pleasures are integral to gender normalisation processes. The findings presented are particularly discussed in terms of inclusive/exclusive pedagogical practices related to gender, bodies and pleasures.Research setting and participants: The research setting was a single-sex, boys’ secondary school in Auckland, New Zealand. Participants in this study were 60 Year 10 (age 14-15) students from two PE classes.Data collection and analysis: Using a visual ethnographic approach (Pink, 2007) involving observations and video recordings of boys participating in PE, the boys’ representations and interpretations of the visual data were explored during both focus groups and individual interviews. The data was analysed using (a visually oriented) discourse analysis (Foucault, 1998; Rose, 2007).Findings: By elucidating the discursive practices of PE in this setting and employing Butler’s (1993) concept of ‘materialisation’, we suggest that boy’s bodies materialise as productive and pleasurable or displeasurable bodies through submitting/subjecting to certain bodily regimes, developing embodied mastery when it comes to certain sports, and displaying bodies in particular ways. The analysis indicate that the discursive practices of PE contribute to boys’ bodies materialising as pleasurable or dis-pleasurable and the (re)production of gender in the subject as shaped by discourse and the productive effect of power.Discussion and conclusions: In line with Gard (2008) we conclude that the focus on certain discursively constructed bodily practices at the same time continues to restrict the production of a diversity of bodily movement pleasures. Hence, traditional gender patterns are reproduced through a selection of particular sports/physical activities that all the students are expected to participate in. We propose that the ongoing constitution of privileged forms of masculinity, masculine bodies and masculine pleasures as related to fitness, health and sport and (certain) boys’ subsequent exercise of power in PE needs further critical examination.
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