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Biochemical brain tissue markers and heart rate distribution in elite female soccer players
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation.
2016 (English)Licentiate thesis, comprehensive summary (Other academic)Alternative title
Studier av hjärnvävnadsskademarkörer och hjärtfrekvens hos kvinnliga elitfotbollsspelare (Swedish)
Place, publisher, year, edition, pages
Umeå: Umeå university , 2016. , 36 p.
Keyword [en]
female soccer, brain injury markers, heart rate, internal load
Keyword [sv]
damfotboll, hjärnvävnadsskademarkörer, hjärtfrekvens, individuell arbetsbelastning
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:umu:diva-130322ISBN: 978-91-7601-601-5 (print)OAI: oai:DiVA.org:umu-130322DiVA: diva2:1066052
Presentation
2016-11-23, 09:00
Supervisors
Available from: 2017-01-17 Created: 2017-01-17 Last updated: 2017-01-17Bibliographically approved
List of papers
1. Serum concentrations of two biochemical markers of brain tissue damage S-100B and neurone specific enolase are increased in elite female soccer players after a competitive game
Open this publication in new window or tab >>Serum concentrations of two biochemical markers of brain tissue damage S-100B and neurone specific enolase are increased in elite female soccer players after a competitive game
2006 (English)In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, Vol. 40, no 4, 313-316 p.Article in journal (Refereed) Published
Abstract [en]

Background: It is a matter of debate whether or not ordinary heading of the ball in soccer causes injury to brain tissue. Objective: To analyse concentrations of the biochemical markers of brain tissue damage S-100B and neurone specific enolase (NSE) in serum of female elite soccer players in association with a competitive game. Methods: Venous blood samples were obtained from 44 female soccer players before and after a competitive game for analysis. The number of headers and trauma events (falls, collisions, etc) was assessed from videotape recordings for each player. Results: Concentrations of both brain damage markers were increased after the game (S-100B, 0.18 (0.11) v 0.11 (0.05) mg/l (p = 0.000); NSE, 10.14 (1.74) v 9.05 (1.59) mg/l (p = 0.001)). There was a significant correlation between changes in S-100B concentrations and both the number of headers (r = 0.430, p = 0.004) and the number of other trauma events (r = 0.517, p < 0.001). Conclusion: The concentrations of both S-100B and NSE were increased by game associated activities and events. The increases in S-100B concentration were significantly related to the number of headers and other trauma events, which indicates that both these factors may have contributed to these increases.

National Category
Sport and Fitness Sciences
Identifiers
urn:nbn:se:umu:diva-67905 (URN)10.1136/bjsm.2005.021584 (DOI)000236224000007 ()16556784 (PubMedID)
Available from: 2013-04-07 Created: 2013-04-07 Last updated: 2017-01-17Bibliographically approved
2. Heart Rate Distribution during Training and a Domestic League Game in Swedish Elite Female Soccer Players
Open this publication in new window or tab >>Heart Rate Distribution during Training and a Domestic League Game in Swedish Elite Female Soccer Players
Show others...
2015 (English)In: Annals of Sports Medicine and Research, ISSN 2379-0571, Vol. 2, no 4, 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: 2017-01-17Bibliographically approved

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