| 1. |
- Ekblom Bak, Elin, 1981-, et al.
(författare)
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Accelerometer derived physical activity patterns in 27.890 middle‐aged adults : The SCAPIS cohort study
- 2022
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Ingår i: Scandinavian Journal of Medicine and Science in Sports. - : John Wiley & Sons. - 0905-7188 .- 1600-0838. ; 32:5, s. 866-880
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Tidskriftsartikel (refereegranskat)abstract
- The present study aims to describe accelerometer-assessed physical activity (PA) patterns and fulfillment of PA recommendations in a large sample of middle-aged men and women, and to study differences between subgroups of socio-demographic, socio-economic, and lifestyle-related variables. A total of 27 890 (92.5% of total participants, 52% women, aged 50–64 years) middle-aged men and women with at least four days of valid hip-worn accelerometer data (Actigraph GT3X+, wGT3X+ and wGT3X-BT) from the Swedish CArdioPulmonary bioImage Study, SCAPIS, were included. In total, 54.5% of daily wear time was spent sedentary, 39.1% in low, 5.4% in moderate, and only 0.1% in vigorous PA. Male sex, higher education, low financial strain, born in Sweden, and sedentary/light working situation were related to higher sedentary time, but also higher levels of vigorous PA. High BMI and having multiple chronic diseases associated strongly with higher sedentary time and less time in all three PA intensities. All-year physically active commuters had an overall more active PA pattern. The proportion fulfilling current PA recommendations varied substantially (1.4% to 92.2%) depending on data handling procedures and definition used. Twenty-eight percent was defined as having an “at-risk” behavior, which included both high sedentary time and low vigorous PA. In this large population-based sample, a majority of time was spent sedentary and only a fraction in vigorous PA, with clinically important variations between subgroups. This study provides important reference material and emphasizes the importance of a comprehensive assessment of all aspects of the individual PA pattern in future research and clinical practice.
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| 2. |
- Larsson, Håkan, et al.
(författare)
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Physical education cultures in Sweden : fitness, sports, dancing ... learning?
- 2015
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Ingår i: Sport, Education and Society. - : Taylor & Francis Group. - 1357-3322 .- 1470-1243. ; 20:5, s. 573-587
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Tidskriftsartikel (refereegranskat)abstract
- In a significant article from 1993, Crum describes the purpose of physical education (PE) as a ‘planned introduction into movement culture’. In broad terms, this purpose is tantamount to the stated purpose of Swedish PE in national steering documents. Crum contends, however, that physical educators do not prioritise learning, which is largely due to the different ‘movement cultures’ that constitute the PE lessons. This article explores how practice unfolds in movement cultures that are included in Swedish PE and their implications for teaching and learning in the subject. Some 30 (indoor) PE lessons in eight secondary schools in four cities throughout Sweden were video recorded. At ‘first glance’ these lessons indicated the prevalence of four logics of practice: a physical training logic, a sports logic, a sport technique logic and a dance logic. However, further analysis revealed that the teachers’ and students’ actions were not entirely in line with a logic of practice of training the body, winning the game learning sporting skills or learning to dance. Instead, the PE practice largely unfolded as a ‘looks-like-practice’, where the purpose of teaching was blurred, and where any ‘planned introduction into movement culture’ was difficult to identify. In the final section, the authors discuss how physical activity logics can be recontextualised in a PE setting in order to emphasise the educational contribution of PE.
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| 3. |
- Burman, Erik, et al.
(författare)
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Concussed athletes are more prone to injury both before and after their index concussion : A data base analysis of 699 concussed contact sports athletes
- 2016
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Ingår i: BMJ Open Sport and Exercise Medicine. - : BMJ Publishing Group Ltd. - 2055-7647. ; 2:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Ice hockey and football players suffering concussions might have an increased risk for injuries afterwards. We aimed to investigate if concussions predisposed athletes for subsequent sport injuries.Methods: Patient data were obtained from a data base established at the University Hospital in Umea, Sweden. Athletes who had suffered a concussion were included if they had been aged between 15 and 35 years of age, and played ice hockey, football (soccer), floorball and handball. They were studied in terms of all new or previous injuries during 24 months before and after their concussion. Results were compared with a control group of athletes from the same four sports with an ankle injury.Results: Athletes with a concussion were more likely to sustain injuries compared with the control group, both before (OR 1.98. 95% CI 1.45 to 2.72) and after the concussion (OR 1.72. 95% CI 1.26 to 2.37). No increase in frequency of injury was found after a concussion compared with before. This was true for athletes in all four sports and for both sexes.Conclusions: This study indicates that athletes sustaining a concussion may have a more aggressive or risk-taking style of play than their counterparts. Our data do not suggest that a concussion injury, per se, leads to subsequent injuries.
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| 4. |
- Vedung, Fredrik, et al.
(författare)
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Concussion incidence and recovery in Swedish elite soccer : prolonged recovery in female players
- 2020
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Ingår i: Scandinavian Journal of Medicine and Science in Sports. - : John Wiley & Sons. - 0905-7188 .- 1600-0838. ; 30:5, s. 947-957
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Tidskriftsartikel (refereegranskat)abstract
- ObjectivesSport‐related concussions are an increasingly recognized health problem. Soccer is the most popular sport in the world although recent studies on concussion incidence are scarce. Here, a nation‐wide prospective study on concussion incidence, symptom severity, risk factors, gender differences and return‐to‐play after concussion was performed in 51 Swedish elite soccer teams during the 2017 season.MethodsIn the first and second soccer leagues for men and women, a Sport Concussion Assessment Tool (SCAT) ‐based questionnaire study was performed at pre‐season (baseline) and from 48h up to three months post‐concussion.ResultsWe followed 959 players (389 women, 570 men) for 25146 player game hours (9867 h for women, 15279 h for men). Concussion incidence (n= 36) was 1.19/1000 player game hours (females 1.22/1000 h, males 1.18/1000 h; p= 0.85). Twenty‐seven percent (females 8%, males 40%) of players continued to play immediately after the concussion. When compared to male players, female players had worse initial symptom severity scores (median and IQR 30 (17‐50.5) vs. 11 (4‐26.25), p=0.02) and longer return to play (p=0.02). Risk factors for concussion were baseline symptoms and previous concussion.ConclusionIn Swedish elite soccer, the concussion incidence was 1.19/1000 without gender differences. Most players recovered to play within four weeks post‐injury. Almost one third of players continued to play at time of concussion. Female players had worse initial symptoms and longer return‐to‐play time than males, and a prolonged recovery beyond three months was only observed among female players.
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| 5. |
- Pauelsen, Mascha, et al.
(författare)
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Concussion in ice hockey : A Cohort Study Across 29 Seasons
- 2017
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Ingår i: Clinical Journal of Sports Medicine. - : Wolters Kluwer. - 1050-642X .- 1536-3724. ; 27:3, s. 283-287
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The aim of this study was to analyse the concussion incidence rate ratios (IRR) across 29 seasons in a Swedish Hockey League team.Design: Cohort study over 29 seasons within one Swedish elite series ice hockey team. Participants: All players who were part of one Swedish elite ice hockey team during the research period gave consent for participation in the study.Independent Variables: Exposure to top level Swedish ice hockey. Main Outcome Measures: Incidence rate ratio for concussion as well as rehabilitation periods due to concussion were calculated and analysed.Results: During the research period, 267 players in total were part of the team. A total of 1638 traumatic injuries were registered of which 162 were concussions. Incidence rates ranged from 0/1,000 games during the first season to 118/1,000 games for the final recorded season. The incidence rate ratio was 1.06 (CI = 1.03-1.10) for the entire research period. A shift towards longer rehabilitation periods was discovered.Conclusions: This study showed a significant increase of concussion incidence rate and a trend towards longer rehabilitation periods due to concussion. Possible risk factors were discussed. Risk behaviour and rehabilitation protocols should be prioritized areas in the research of concussion in ice hockey.
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| 6. |
- Röijezon, Ulrik, et al.
(författare)
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An Initial Study on the Coordination of Rod and Line Hauling Movements in Distance Fly Casting
- 2017
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Ingår i: Annals of Applied Sport Science. - : Asian Exercise and Sport Science Association. - 2476-4981 .- 2322-4479. ; 5:2, s. 61-72
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Tidskriftsartikel (refereegranskat)abstract
- Background. The double haul is a unique feature of single-handed fly casting and is used in both fly fishing and fly casting competition. The movement behaviour during the double haul has not been investigated in previous research.Objectives. Describe the coordination of the rod and line hauling movements during distance fly casting.Methods. Elite fly casters performed distance casting with four different fly rod and fly line set-ups used in fly fishing and fly casting competition. Rod and hauling movements were measured with a 3D motion analysis system.Results. The rod and line hauling movements were coordinated in an order whereby peak translational speed of the rod occurs prior to the peak speed of the angular rotation of the rod, and the peak speed of the angular rotation of the rod occurs prior to the peak speed of the line haul. This was consistent for all cast sequences, i.e., the back and forward false casts and the delivery cast, and for all four equipment set-ups, i.e., a shooting-head line cast with a relatively stiff fly rod and a long-belly line cast with three different fly rods with different stiffness and action curves. Results also showed differences in movement coordination between cast sequences and rod and line set-ups.Conclusion. Among elite casters, single-handed fly casting with double haul is coordinated in an order of events whereby the peak speed occurs first for the translation of the rod, then for the rotation of the rod and finally for the line haul.
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| 7. |
- Holmberg, Hans-Christer, et al.
(författare)
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Contribution of the legs to double-poling performance in elite cross-country skiers.
- 2006
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Ingår i: Medicine and science in sports and exercise. - : Ovid Technologies (Wolters Kluwer Health). - 0195-9131 .- 1530-0315. ; 38:10, s. 1853-60
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Tidskriftsartikel (refereegranskat)abstract
- In the classical style of cross-country skiing, the double-poling (DP) technique, which is regarded as an upper-body exercise, is used on the flatter parts of a course. Limited biomechanical and physiological data are available about DP compared with other cross-country skiing techniques. The purpose of the present study was to evaluate the possible role of the lower body during DP.Eleven elite cross-country skiers performed two incremental tests using DP roller skiing at 1 degree inclination on a treadmill with or without locking the knee and ankle joints (DPLOCKED and DPFREE). Maximal and peak oxygen uptake (VO2max and VO2peak) during classic diagonal skiing and DP, respectively, were measured. In addition, heart rate, blood lactate concentration, and maximal DP velocity (Vmax) were determined. Pole-ground reaction forces and joint angles (elbow, hip, knee, and ankle) were analyzed.The skiers obtained 7.7% higher VO2peak, 9.4% higher Vmax, and 11.7% longer time to exhaustion during DPFREE compared with DPLOCKED (all P < 0.05). There was a higher heart rate and blood lactate concentration in DPLOCKED at submaximal stages (all P < 0.05), with no difference in oxygen consumption. At 85% Vmax, corresponding to approximately 81% VO2peak FREE, the differences in physiological variables were accompanied by a 13.6% higher poling frequency, a 4.9% shorter poling phase, 13.3% shorter recovery phase, and 10.9% lower relative pole force in DPLOCKED (all P < 0.05).Movements of the knee and ankle joints are an integrative part in the skillful use of the DP technique, and restriction of the motion in these joints markedly affects both biomechanical and physiological variables, impairing DP performance.
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| 8. |
- Yu, Ji-Guo, et al.
(författare)
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Potential effects of long term abuse of anabolic androgen steroids on human skeletal muscle
- 2020
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Ingår i: Journal of Sports Medicine and Physical Fitness. - : Edizioni Minerva Medica. - 0022-4707 .- 1827-1928. ; 60:7, s. 1040-1048
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: We have previously evaluated muscle functions and morphology in power athletes of long term (5 to15 years) abuse of anabolic androgen steroids (AAS; Doped) and in clean power athletes (Clean), and observed significant improvements in both muscle morphology and muscle functions in Doped. To our knowledge, the effects of long term AAS abuse on human muscle protein profile have never been studied.METHODS: The study examined further the muscle biopsies using a two-dimensional difference gel electrophoresis (2D DIGE) for proteomic screening and protein expression. Cellular localization/distribution of specific proteins identified by proteomic analysis was examined using immunohistochemistry (IHC).RESULTS: Different protein profiles were observed between Doped and Clean, and a valid orthogonal projection of latent structure discriminant analysis model was built (N = 16, X = 5, R2 = 0.88/Q2 = 0.84, p = 0.0005), which separated Doped from Clean. Liquid chromatography followed by tandem spectrometry identified 14 protein spots (representing nine different proteins) of significant difference in relative quantity (p < 0.05), of which nine spots were down-regulated in Doped compared with Clean. IHC revealed no significant alteration in cellular localization in phosphoglucomutase-1 and heat shock protein beta-1, but indeed in two reference proteins desmin and F-actin in Doped.CONCLUSIONS: Long term abuse of AAS in combination with training is potentially associated with alterations in skeletal muscle protein profile and protein expression, and structural proteins rather than non-structural proteins are preferentially affected in cellular localization/distribution.
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| 9. |
- Hertting, Krister, 1972-, et al.
(författare)
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The Youth Soccer Coaches’ Visions and Thoughts of Leader Support
- 2016
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Ingår i: Physical Culture and Sport. Studies and Research. - Biala Podlaska : Akademia Wychowania Fizycznego Jozefa Pilsudskiego w Warszawie. - 2081-2221 .- 1899-4849. ; 70:1, s. 69-78
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Tidskriftsartikel (refereegranskat)abstract
- The Objectives: The European Commission has highlighted the use of sports as an important venue for engaging citizens in health-enhancing activities, physical activity, volunteerism and active citizenship. Coaching is a central component of sports for children and youth, but there is little research on the promotion of sports coaches’ health. In the light of this gap, the aim of this paper was to elucidate youth soccer coaches’ visions and thoughts regarding leadership support from clubs and soccer associations.Design and method: The study was based on an online questionnaire conducted with Swedish soccer coaches who coached children and young people between 6 and 18 years of age. In total, 1514 coaches received the online questionnaire via email and 764 coaches (50.5% of the sample) answered. Three hundred and seventy-five coaches answered the open question: ‘How would you describe the support you, as a coach, would like to receive from clubs and associations?’ Responses were analysed using method.Results: Four main themes emerged from the analysis: financial and other resources support, recognition of contribution, sense of belonging to a value-based association and positive coach development.Conclusion: We discuss the factors that support soccer coaches and how these can serve as health-promoting supports for coaches working with children and youth.
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| 10. |
- Bortolan, Lorenzo, et al.
(författare)
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Ski Mountaineering : Perspectives on a Novel Sport to Be Introduced at the 2026 Winter Olympic Games
- 2021
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Ingår i: Frontiers in Physiology. - : Frontiers Media S.A.. - 1664-042X. ; 12
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Tidskriftsartikel (refereegranskat)abstract
- Ski mountaineering is a rapidly growing winter sport that involves alternately climbing and descending slopes and various racing formats that differ in length and total vertical gain, as well as their distribution of downhill and uphill sections. In recent years, both participation in and media coverage of this sport have increased dramatically, contributing, at least in part, to its inclusion in the 2026 Winter Olympics in Milano-Cortina. Here, our aim has been to briefly describe the major characteristics of ski mountaineering, its physiological and biomechanical demands, equipment, and training/testing, as well as to provide some future perspectives. Despite its popularity, research on this discipline is scarce, but some general characteristics are already emerging. Pronounced aerobic capacity is an important requirement for success, as demonstrated by positive correlations between racing time and maximal oxygen uptake and oxygen uptake at the second ventilatory threshold. Moreover, due to the considerable mechanical work against gravity on demanding uphill terrain, the combined weight of the athlete and equipment is inversely correlated with performance, prompting the development of both lighter and better equipment in recent decades. In ski mountaineering, velocity uphill is achieved primarily by more frequent (rather than longer) strides due primarily to high resistive forces. The use of wearable technologies, designed specifically for analysis in the field (including at elevated altitudes and cold temperatures) and more extensive collaboration between researchers, industrial actors, and coaches/athletes, could further improve the development of this sport.
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