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Söderman, Kerstin
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Publications (10 of 14) Show all publications
Ohlsson, A., Berg, L., Ljungberg, H., Söderman, K. & Stålnacke, B.-M. (2015). Heart Rate Distribution during Training and a Domestic League Game in Swedish Elite Female Soccer Players. Annals of Sports Medicine and Research, 2(4), Article ID 1025.
Open this publication in new window or tab >>Heart Rate Distribution during Training and a Domestic League Game in Swedish Elite Female Soccer Players
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2015 (English)In: Annals of Sports Medicine and Research, ISSN 2379-0571, Vol. 2, no 4, article id 1025Article in journal (Refereed) Published
Abstract [en]

Background: Soccer is a complex sport with high cardiovascular demands. Preparation for the demands of competition often involves game-simulation practice. This is supposed to improve the physiological adaptions. The main purpose of this study was to compare heart rate (HR) distribution among elite female soccer players during in-season training sessions and a game. Methods: Fifteen players were observed during three regular training sessions, and at a domestic league game using Polar Team2 HR monitors. HR was categorized into HR zones to compare intensities of each activity observed. Results: HR values were significantly higher during the game (HRmean: 168±9 beats per minute (bpm), HRpeak: 189±8 bpm) than during training (HRmean: 134±11 bpm, HRpeak: 183±9 bpm, p<0.001). Players spent 55% of the game and 11% of the total training time at high intensity (HR above 90% of HRpeak, p<0.001).HRmean and HRpeak were significantly higher in the first half compared with the second half of the game (p<0.05). Conclusion: The present study demonstrates higher HR values and longer duration at high intensity during game play in comparison with training, which indicates higher demands on the players' internal load during the game. Thus, the results suggest the need to include high intensity exercise sessions during training.

Place, publisher, year, edition, pages
JSciMed Central, 2015
National Category
Sport and Fitness Sciences
Identifiers
urn:nbn:se:umu:diva-105675 (URN)
Available from: 2015-06-27 Created: 2015-06-27 Last updated: 2018-06-07Bibliographically approved
Renström, B., Söderman, K., Domellöf, E. & Emanuelson, I. (2012). Self-reported health and influence on  life  situation 5–8 years after paediatric traumatic brain injury. Brain Injury, 26(12), 1405-1414
Open this publication in new window or tab >>Self-reported health and influence on  life  situation 5–8 years after paediatric traumatic brain injury
2012 (English)In: Brain Injury, ISSN 0269-9052, E-ISSN 1362-301X, Vol. 26, no 12, p. 1405-1414Article in journal (Refereed) Published
Abstract [en]

Primary objective : During childhood, the central nervous system is in a state of rapid development which can be interrupted by a traumatic brain injury (TBI). This study aimed to describe if and how TBI during childhood influences health and life situation, 5–8 years later.

Research design : A case-control retrospective design was employed for the assessment of 61 adolescents and young adults with a mild, moderate or severe TBI and 229 matched controls from a normative group (16–24 years).

Methods and procedures : SF-36 (Short Form 36 health survey) and a self-reported questionnaire measuring life situation were distributed to youths suffering TBI 5–8 years ago. Forty-five youths (74%) completed the questionnaires.

Main outcomes and results : Participants with a TBI stated lower self-estimated health compared with the normative group.

Remaining self-reported symptoms were physical and cognitive. Negative effects of TBI influencing school results, leisure activities and thoughts about future life situation were also described.

Conclusion : Young individuals experience sustained negative effects of childhood TBI on health and life situation. More research is necessary to detect, understand and properly support these youths.

Place, publisher, year, edition, pages
Informa Healthcare, 2012
Keywords
SF-36, children, adolescents, paediatric, traumatic brain injury, outcome, rehabilitation, leisure activities, school
National Category
Psychology Physiotherapy Neurosciences
Research subject
Psychology
Identifiers
urn:nbn:se:umu:diva-60586 (URN)10.3109/02699052.2012.694559 (DOI)
Available from: 2012-10-18 Created: 2012-10-18 Last updated: 2018-06-08Bibliographically approved
Ng, N., Söderman, K., Norberg, M. & Öhman, A. (2011). Increasing physical activity, but persisting social gaps among middle-aged people: trends in Northern Sweden from 1990 to 2007. Global Health Action, 4, 6347
Open this publication in new window or tab >>Increasing physical activity, but persisting social gaps among middle-aged people: trends in Northern Sweden from 1990 to 2007
2011 (English)In: Global Health Action, ISSN 1654-9716, E-ISSN 1654-9880, Vol. 4, p. 6347-Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Physical activity is identified as one important protective factor for chronic diseases. Physical activity surveillance is important in assessing healthy population behaviour over time. Many countries lack population trends on physical activity.

OBJECTIVE: To present trends in physical activity levels in Västerbotten County, Sweden and to evaluate physical activity among women and men with various educational levels.

METHODS: opulation-based cross-sectional and panel data from the Västerbotten Intervention Programme (VIP) during 1990-2007 were used. All individuals in Västerbotten County who turned 40, 50, or 60 years old were invited to their local primary health care for a health screening. Physical activity during commuting, recreational activities, physical exercise, and socio-demographic data were collected using a self-administered questionnaire. Respondents were categorised as sedentary, moderate physically active, or physically active.

RESULTS: The prevalences of physically active behaviours increased from 16 to 24.2% among men and from 12.6 to 30.4% among women. Increases are observed in all educational groups, but gaps between educational groups widened recently. The level of sedentary behaviour was stable over the time period studied. The 10-year follow-up data show that the prevalences of physically active behaviours increased from 15.8 to 21.4% among men and 12.7 to 23.3% among women. However, 10.2% of men and 3.8% of women remained sedentary.

CONCLUSION: Despite the promising evidence of increasing physical activity levels among the population in Västerbotten County, challenges remain for how to reduce the stable levels of sedentary behaviours in some subgroups. Persisting social gaps in physical activity levels should be addressed further. An exploration of people's views on engaging in physical activity and barriers to doing so will allow better formulation of targeted interventions within this population.

National Category
Physiotherapy
Identifiers
urn:nbn:se:umu:diva-46746 (URN)10.3402/gha.v4i0.6347 (DOI)21799669 (PubMedID)
Available from: 2011-09-13 Created: 2011-09-13 Last updated: 2018-06-08Bibliographically approved
Olofsson, L., Fjellman-Wiklund, A. & Sö derman, K. (2010). From loss towards restoration: Experiences from anterior cruciate ligament injury. Advances in Physiotherapy, 12(1), 50-57
Open this publication in new window or tab >>From loss towards restoration: Experiences from anterior cruciate ligament injury
2010 (English)In: Advances in Physiotherapy, ISSN 1403-8196, E-ISSN 1651-1948, Vol. 12, no 1, p. 50-57Article in journal (Refereed) Published
Abstract [en]

The objective of this study was to illuminate anterior cruciate ligament (ACL)-reconstructed athletes’ experience of their injury, rehabilitation and recovery. Seven persons, aged 19–57 years, were interviewed on one occasion in autumn 2004, between 10 and 31 months after the ACL reconstruction. They were selected to reach a maximum variation sample according to gender, age, activity level, time between injury and ACL reconstruction and time between surgery and the interview. The analyses were carried out using the Grounded Theory method of constant comparison. One core category “From loss towards restored belief in one's ability” and three categories emerged. The core category represents the process starting when the informants were injured. The process contained phases that interacted with each other but more importantly were drawn out over a long period, especially the mental recovery. The informants used different procedures to manage situations that arose and strived towards restored belief in their ability. This study illuminates the complexity of the recovery process. The patients’ belief in their own ability took a long time to restore. It is important for physiotherapists to understand what patients with ACL injuries need while waiting for surgery. The process of rehabilitation can further equip people with the means to manage problems that can arise and help to strengthen their belief in their ability, as well as helping them with physical training.

Keywords
Coping, physiotherapy, qualitative research, rehabilitation process, sports injury
National Category
Physiotherapy
Identifiers
urn:nbn:se:umu:diva-26752 (URN)10.1080/14038190903165120 (DOI)
Available from: 2009-10-26 Created: 2009-10-26 Last updated: 2018-06-08Bibliographically approved
Söderman, K. & Lindström, B. (2010). The relevance of using isokinetic measures to evaluate strength. Advances in Physiotherapy, 12(4), 194-200
Open this publication in new window or tab >>The relevance of using isokinetic measures to evaluate strength
2010 (English)In: Advances in Physiotherapy, ISSN 1403-8196, E-ISSN 1651-1948, Vol. 12, no 4, p. 194-200Article in journal (Refereed) Published
Abstract [en]

Isokinetic testing is often used to evaluate the effect of different types of interventions and also to interpret whether an individual is ready to return to physical activity. However, limited research exists concerning the suitability of evaluating the effect of isotonic training using isokinetic testing. The aim with this study was to assess the relation between the development of force during isokinetic and isotonic concentric maximal contractions. Fifty subjects (24 women and 26 men) performed maximal concentric isokinetic and isotonic elbow flexion. The isokinetic tests were performed in an isokinetic dynamometer and the isotonic tests in a pulley apparatus. The relationship between the isokinetic values (peak value and mean force value) and the isotonic values (1RM) was modeled by linear regression analysis. There was a significant linear correlation between both the isokinetic values and the isotonic value that explained 89% (peak) and 88% (mean) of the variation. From the linear regression analysis, two different formulas were derived to estimate the prediction of the isokinetic values. The significant relation between isokinetic and isotonic measures means that it may be possible to evaluate the effects of isotonic training by using an isokinetic dynamometer. However, there was a large variation around the predicted isokinetic values that has to be considered. It is important to point out that the results of this study are applicable only on healthy young men and women with similar strength as our subjects.

Read More: http://informahealthcare.com/doi/abs/10.3109/14038196.2010.507783

Keywords
Isotonic, muscle testing, one repetition maximum, regression analysis
National Category
Physiotherapy
Research subject
Physiotherapy
Identifiers
urn:nbn:se:umu:diva-41329 (URN)10.3109/14038196.2010.507783 (DOI)
Available from: 2011-03-23 Created: 2011-03-23 Last updated: 2018-06-08Bibliographically approved
Fahlström, M. & Söderman, K. (2007). Decreased shoulder function and pain common in recreational badminton players.. Scand J Med Sci Sports, 17(3), 246-51
Open this publication in new window or tab >>Decreased shoulder function and pain common in recreational badminton players.
2007 (English)In: Scand J Med Sci Sports, ISSN 0905-7188, Vol. 17, no 3, p. 246-51Article in journal (Refereed) Published
Keywords
Adult, Female, Humans, Male, Middle Aged, Pain/*epidemiology, Questionnaires, Racquet Sports, Shoulder Joint/*physiopathology, Sweden/epidemiology
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:umu:diva-68077 (URN)
Available from: 2013-04-12 Created: 2013-04-12 Last updated: 2018-06-08
Söderman, K. (2007). Idrottsrelaterade skador - riskfaktorer och prevention. In: Idrottsskador - frontlinjen inom behandling och rehabilitering. : Centrum för idrottsforskning, Stockholm
Open this publication in new window or tab >>Idrottsrelaterade skador - riskfaktorer och prevention
2007 (Swedish)In: Idrottsskador - frontlinjen inom behandling och rehabilitering, Centrum för idrottsforskning, Stockholm , 2007Chapter in book (Other (popular science, discussion, etc.))
Place, publisher, year, edition, pages
Centrum för idrottsforskning, Stockholm, 2007
Identifiers
urn:nbn:se:umu:diva-8744 (URN)91-87154-17-x (ISBN)
Available from: 2008-02-08 Created: 2008-02-08 Last updated: 2018-06-09Bibliographically approved
Fahlström, M., Yeap, J. S., Alfredson, H. & Söderman, K. (2006). Shoulder pain -- a common problem in world-class badminton players.. Scandinavian journal of medicine & science in sports, 16(3), 168-73
Open this publication in new window or tab >>Shoulder pain -- a common problem in world-class badminton players.
2006 (English)In: Scandinavian journal of medicine & science in sports, ISSN 0905-7188, Vol. 16, no 3, p. 168-73Article in journal (Refereed) Published
Keywords
Activities of Daily Living, Adult, Arthritis/etiology, Female, Humans, Joint Instability/complications, Male, Physical Therapy Modalities, Psychomotor Performance/physiology, Racquet Sports/classification/*injuries, Rotator Cuff/injuries, Shoulder Impingement Syndrome/etiology, Shoulder Pain/*etiology/therapy, Sleep Disorders/etiology, Tendinopathy/etiology, Time Factors
Identifiers
urn:nbn:se:umu:diva-16993 (URN)16643194 (PubMedID)
Available from: 2008-01-03 Created: 2008-01-03 Last updated: 2018-06-09Bibliographically approved
Gisslèn, K., Gyulai, C., Söderman, K. & Alfredson, H. (2005). High prevalence of jumper's knee and sonographic changes in Swedish elite junior volleyball players compared to matched controls.. British Journal of Sports Medicine, 39(5), 298-301
Open this publication in new window or tab >>High prevalence of jumper's knee and sonographic changes in Swedish elite junior volleyball players compared to matched controls.
2005 (English)In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, ISSN 1473-0480, Vol. 39, no 5, p. 298-301Article in journal (Refereed) Published
Keywords
Adolescent, Adult, Athletic Injuries/etiology/*ultrasonography, Female, Humans, Knee Injuries/etiology/*ultrasonography, Male, Patella/injuries, Sports, Sweden, Tendon Injuries/etiology/*ultrasonography
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:umu:diva-16958 (URN)10.1136/bjsm.2004.014290 (DOI)15849296 (PubMedID)
Available from: 2008-01-02 Created: 2008-01-02 Last updated: 2018-06-09Bibliographically approved
Söderman, K., Pietilä, T., Alfredson, H. & Werner, S. (2002). Anterior cruciate ligament injuries in young females playing soccer at senior levels.. Scandinavian Journal of Medicine and Science in Sports, 12(2), 65-68
Open this publication in new window or tab >>Anterior cruciate ligament injuries in young females playing soccer at senior levels.
2002 (English)In: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 12, no 2, p. 65-68Article in journal (Refereed) Published
Abstract [en]

The aim of this investigation was to study the consequences of anterior cruciate ligament injuries in female soccer players. Special interest was focused on young female soccer players (< 16 years) sustaining anterior cruciate ligament injuries when playing at a senior level, which means playing together with players 19 years or older. In Sweden, all players belonging to an organized soccer club are insured by the same insurance company, the Folksam Insurance Company. Data of all soccer-related knee injuries in females reported to the Folksam Insurance Company between 1994 and 1998 were collected. A questionnaire was sent to 978 females who were registered to have sustained a knee injury before the age of 20 years. The response rate was 79%. Three hundred and ninety-eight female soccer players who had sustained an anterior cruciate ligament injury before the age of 19 years were analysed. Most of their anterior cruciate ligament injuries had been diagnosed using arthroscopy or magnetic resonance imaging (84%). Thirty-eight percent of the players had been injured before the age of 16 years. Of these, 39% were injured when playing in senior teams. When playing in senior teams 59% of the players below the age of 16 years and 44% of the players 16 years or older sustained their ACL injuries during contact situations. At the time of this investigation (2-7 years after the anterior cruciate ligament injury), altogether 78% (n = 311) reported that they had stopped playing soccer. The most common reason (80%) was symptoms from their anterior cruciate ligament-injured knee. It appears that many young female soccer players injure their anterior cruciate ligament when playing at a senior level. Therefore, we suggest that female soccer players under the age of 16 years should be allowed to participate only in practice sessions but not games at a senior level.

Keywords
anterior cruciate ligament injury, young females, soccer
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:umu:diva-32823 (URN)10.1034/j.1600-0838.2002.120201.x (DOI)12121422 (PubMedID)
Available from: 2010-03-29 Created: 2010-03-29 Last updated: 2018-06-08Bibliographically approved
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