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  • 1.
    Alricsson, Marie
    et al.
    Mittuniversitetet, Institutionen för hälsovetenskap.
    Harms-Ringdahl, Karin
    Eriksson, K
    Werner, Suzanne
    The effect of dance training on joint mobility, muscle flexibility, speed and agility in young cross-country skiers,: a prospective controlled intervention study.2003Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 13, nr 4, s. 237-243Artikkel i tidsskrift (Fagfellevurdert)
  • 2.
    Alricsson, Marie
    et al.
    Mittuniversitetet, Institutionen för hälsovetenskap.
    Harms-Ringdahl, Karin
    Werner, Suzanne
    Reliability of sports related functional tests with emphasis on speed and agility in young athletes.2001Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 11, nr 4, s. 229-232Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of the present investigation was to test the reliability of two sports related functional tests, a speed test (slalom-test) and an agility test (hurdle-test). Eleven athletes aged 11 years (8 boys, 3 girls) participated voluntarily in the study. All subjects completed four different test sessions for both the slalom-test and the hurdle-test using six standard track hurdles placed at 2-m intervals along a 12-m length of track. There were no significant differences between testing sessions for either the slalom-test (P=0.99) or the hurdle-test (P=0.96), showing no systematic variation between test times. The intraclass correlation coefficients were 0.96 and 0.90 respectively, indicating a good reliability. We conclude that the slalom-test and the hurdle-test are reliable sports related functional tests for measuring speed and agility in groups of young athletic individuals.

  • 3.
    Fahrenholtz, I. L.
    et al.
    Univ Copenhagen, Denmark.
    Sjödin, A.
    Univ Copenhagen, Denmark.
    Benardot, D.
    Georgia State Univ, USA.
    Tornberg, A. B.
    Lund University, Sweden.
    Skouby, S.
    Univ Copenhagen, Denmark;Herlev Hosp, Denmark.
    Faber, J.
    Univ Copenhagen, Denmark;Herlev Hosp, Denmark.
    Sundgot-Borgen, J. K.
    Norwegian Sch Sport Sci, Norway.
    Melin, Anna K.
    Univ Copenhagen, Denmark.
    Within-day energy deficiency and reproductive function in female endurance athletes2018Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 28, nr 3, s. 1139-1146Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We aimed to estimate and compare within-day energy balance (WDEB) in athletes with eumenorrhea and menstrual dysfunction (MD) with similar 24-hour energy availability/energy balance (EA/EB). Furthermore, to investigate whether within-day energy deficiency is associated with resting metabolic rate (RMR), body composition, S-cortisol, estradiol, T-3, and fasting blood glucose. We reanalyzed 7-day dietary intake and energy expenditure data in 25 elite endurance athletes with eumenorrhea (n=10) and MD (n=15) from a group of 45 subjects where those with disordered eating behaviors (n=11), MD not related to low EA (n=5), and low dietary record validity (n=4) had been excluded. Besides gynecological examination and disordered eating evaluation, the protocol included RMR measurement; assessment of body composition by dual-energy X-ray absorptiometry, blood plasma analysis, and calculation of WDEB in 1-hour intervals. Subjects with MD spent more hours in a catabolic state compared to eumenorrheic athletes; WDEB<0kcal: 23.0hour (20.8-23.4) vs 21.1hour (4.7-22.3), P=.048; WDEB<-300kcal: 21.8hour (17.8-22.4) vs 17.6hour (3.9-20.9), P=.043, although similar 24-hour EA: 35.6 (11.6) vs 41.3 (12.7) kcal/kg FFM/d, (P=.269), and EB: -659 (551) vs -313 (596) kcal/d, (P=.160). Hours with WDEB <0kcal and <-300kcal were inversely associated with RMRratio (r=-.487, P=.013, r=-.472, P=.018), and estradiol (r=-.433, P=.034, r=-.516, P=.009), and positively associated with cortisol (r=.442, P=.027, r=.463, P=.019). In conclusion, although similar 24-hour EA/EB, the reanalysis revealed that MD athletes spent more time in a catabolic state compared to eumenorrheic athletes. Within-day energy deficiency was associated with clinical markers of metabolic disturbances.

  • 4.
    Josefsson, T.
    et al.
    Halmstad Univ / Univ Gothenburg.
    Lindwall, M.
    Univ Gothenburg.
    Archer, Trevor
    Linnéuniversitetet, Fakulteten för samhällsvetenskap (FSV), Institutionen för idrottsvetenskap (ID). Univ Gothenburg.
    Physical exercise intervention in depressive disorders: Meta- analysis and systematic review2014Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 24, nr 2, s. 259-272Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Previous meta-analyses investigating the effect of exercise on depression have included trials where the control condition has been categorized as placebo despite the fact that this particular placebo intervention (e.g., meditation, relaxation) has been recognized as having an antidepressant effect. Because meditation and mindfulness-based interventions are associated with depression reduction, it is impossible to separate the effect of the physical exercise from the meditation-related parts. The present study determined the efficacy of exercise in reducing symptoms of depression compared with no treatment, placebo conditions or usual care among clinically defined depressed adults. Of 89 retrieved studies, 15 passed the inclusion criteria of which 13 studies presented sufficient information for calculating effect sizes. The main result showed a significant large overall effect favoring exercise intervention. The effect size was even larger when only trials that had used no treatment or placebo conditions were analyzed. Nevertheless, effect size was reduced to a moderate level when only studies with high methodological quality were included in the analysis. Exercise may be recommended for people with mild and moderate depression who are willing, motivated, and physically healthy enough to engage in such a program.

  • 5.
    Melin, Anna K.
    et al.
    Univ Copenhagen, Denmark;Lund University, Sweden.
    Tornberg, A. B.
    Lund University, Sweden;Skåne University Hospital, Sweden.
    Skouby, S.
    Univ Copenhagen, Denmark.
    Moller, S. S.
    Univ Copenhagen, Denmark.
    Faber, J.
    Univ Copenhagen, Denmark.
    Sundgot-Borgen, J.
    Norwegian Sch Sport Sci, Norway.
    Sjödin, A.
    Univ Copenhagen, Denmark.
    Low-energy density and high fiber intake are dietary concerns in female endurance athletes2016Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 26, nr 9, s. 1060-1071Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Low or reduced energy availability (LEA) is linked to functional hypothalamic oligomenorrhea/amenorrhea (FHA), which is frequently reported in weight-sensitive sports. This makes LEA a major nutritional concern for female athletes. The aim of this study was to describe dietary characteristics of athletes with LEA and/or FHA. Endurance athletes (n=45) were recruited from national teams and competitive clubs. Protocols included gynecological examination, body composition, eating disorder evaluation, and 7-day dietary intake and EA assessment. Athletes with disordered eating behavior/eating disorders (n=11), menstrual dysfunction other than FHA (n=5), and low dietary record validity (n=4) were excluded. Remaining subjects (n=25) were characterized by EA [optimal:45kcal (188kJ)/kg fat-free mass (FFM)/day (n=11), LEA:<45kcal (188kJ)/kg FFM/day (n=14)] and reproductive function [eumenorrhea (EUM; n=10), FHA (n=15)]. There was no difference in EA between FHA and EUM subjects. However, FHA and LEA subjects shared the same dietary characteristics of lower energy density (ED) [(P=0.012; P=0.020), respectively], and fat content [(P=0.047; P=0.027), respectively]. Furthermore, FHA subjects had a lower intake of carbohydrate-rich foods (P=0.019), higher fiber content (P<0.001), and drive for thinness score (P=0.003). Conclusively, low ED together with high fiber content may constitute targets for dietary intervention in order to prevent and treat LEA and FHA in female athletes.

  • 6.
    Melin, Anna K.
    et al.
    Univ Copenhagen, Denmark.
    Tornberg, A. B.
    Lund University, Sweden.
    Skouby, S.
    Univ Copenhagen, Denmark.
    Moller, S. S.
    Univ Copenhagen, Denmark.
    Sundgot-Borgen, J.
    Norwegian Sch Sports, Norway.
    Faber, J.
    Univ Copenhagen, Denmark.
    Sidelmann, J. J.
    Univ Southern Denmark, Denmark.
    Aziz, M.
    Univ Copenhagen, Denmark.
    Sjödin, A.
    Univ Copenhagen, Denmark.
    Energy availability and the female athlete triad in elite endurance athletes2015Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 25, nr 5, s. 610-622Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The female athlete triad (Triad), links low energy availability (EA), with menstrual dysfunction (MD), and impaired bone health. The aims of this study were to examine associations between EA/MD and energy metabolism and the prevalence of Triad-associated conditions in endurance athletes. Forty women [26.2 +/- 5.5 years, body mass index (BMI) 20.6 +/- 2.0 kg/m(2), body fat 20.0 +/- 3.0%], exercising 11.4 +/- 4.5 h/week, were recruited from national teams and competitive clubs. Protocol included gynecological examination; assessment of bone health; indirect respiratory calorimetry; diet and exercise measured 7 days to assess EA; eating disorder (ED) examination; blood analysis. Subjects with low/reduced EA (< 45 kcal/kg FFM/day), had lower resting metabolic rate (RMR) compared with those with optimal EA [28.4 +/- 2.0 kcal/kg fat-free mass (FFM)/day vs 30.5 +/- 2.2 kcal/kg FFM/day, P < 0.01], as did subjects with MD compared with eumenorrheic subjects (28.6 +/- 2.4 kcal/kg FFM/day vs 30.2 +/- 1.8 kcal/kg FFM/day, P < 0.05). 63% had low/reduced EA, 25% ED, 60% MD, 45% impaired bone health, and 23% had all three Triad conditions. 53% had low RMR, 25% hypercholesterolemia, and 38% hypoglycemia. Conclusively, athletes with low/reduced EA and/or MD had lowered RMR. Triad-associated conditions were common in this group of athletes, despite a normal BMI range. The high prevalence of ED, MD, and impaired bone health emphasizes the importance of prevention, early detection, and treatment of energy deficiency.

  • 7.
    Östenberg, Anna
    et al.
    Lunds universitet.
    Roos, E
    Lunds universitet.
    Ekdahl, C
    Lunds universitet.
    Roos, H
    Lunds universitet.
    Isokinetic knee extensor strength and functional performance in healthy female soccer players1998Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 8, nr 5, s. 257-264Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aims of this study were to determine the relationship between isokinetic knee extensor muscle strength at 60 degrees/s and 180 degrees/s and five functional performance tests (one-leg-hop, triple-jump, vertical-jump, one-leg-rising and square-hop), to determine the relationship between the five different functional performance tests and to present normative data and limb symmetry index concerning healthy female soccer players. In total 101 female soccer players (X = 20.3 years) were tested. A limb symmetry index, using weak/strong leg, varied from 83.9 to 96.3 in the tests. Between the functional performance tests there were in general correlations of r = 0.4-0.8 (P < 0.001). A correlation of r = 0.77 (P < 0.001) was obtained between one-leg-hop and triple-jump. No differences were found between the right and the left leg or the dominant and the non-dominant leg. Using linear regression models corrected for body weight, height and age, there were low correlations between the isokinetic strength measurements and the functional tests. It is not recommended using functional performance testing and isokinetic testing interchangeably.

  • 8.
    Östenberg, Anna
    et al.
    Lunds universitet.
    Roos, H
    Lunds universitet.
    Injury risk factors in female European football: a prospective study of 123 players during one season2000Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 10, nr 5, s. 279-285Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The purpose of this study was to register prospectively the injuries in female soccer and to study their correlation to potential risk factors. A total of 123 senior players from eight teams of different levels were followed during one season. Isokinetic knee muscle strength at 60 and 180 degrees/s, one-leg-hop, vertical jump, square-hop, and continuous multistage fitness test (MFT) were tested at the end of the pre-season. In addition, Body Mass Index (BMI) and general joint laxity were measured. During the season, April-October, all injuries resulting in absence from one practice/game or more were registered. Forty-seven of the 123 players sustained altogether 65 injuries. The total injury rate was 14.3 per 1000 game hours and 3.7 per 1000 practice hours. The knee (26%) was the most commonly injured region followed by the foot (12%), ankle (11%), thigh (11%) and back (11%). The risk of sustaining moderate and major injuries increased in the later part of the game or practice. Significant risk factors for injuries were an increased general joint laxity (odds ratio (OR)=5.3, P<0.001), a high performance in the functional test square-hop (OR=4.3, P=0.002), and an age over 25 years (OR=3.7, P=0.01). The injury rate was not different compared to male soccer, but knee injuries were more common, which is in accordance with previous studies. None of the risk factors identified in this study is easily applicable for future intervention studies in the attempts to reduce the injury rate in female soccer.

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