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- Lundström, Petra, et al.
(författare)
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A Three Year Case Study with a Multidisciplinary Treatment of Relative Energy Deficiency and Anorexia in a Female Tennis Player
- 2020
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Ingår i: Annals of Sports Medicine and Research. - 2379-0571. ; 7:4
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Tennis is an all-year racket sport requiring qualities such as speed, agility, flexibility, and endurance, as competitions may last up to five hours.Elite players have an estimated daily need of carbohydrate (CHO) between 6-10 g/kg to sustain high amounts of training and frequent competitions. Low energy availability (LEA), over time, may impair both health and performance. LEA may cause metabolic suppression and altered hormone levels via hypothalamic–pituitary– gonadal axis (HPG). Female athletes with LEA have an increased risk of developing menstrual dysfunction, low bone mineral density (BMD), disordered eating behavior (DE) and an eating disorder (ED). This article provides a case-study of an internationally ranked female tennis player, with a recent performance-driven weight loss of 11 kg. She was diagnosed with functional hypothalamic primary amenorrhea (FHA) and anorexia nervosa (AN). The predetermined goal was to return to play and the treatment was based on the guidelines for relative Energy Deficiency in Sport (REDS-CAT). After three years of multidisciplinary interventions, the athlete safely returned to play. Her weight and body composition improved, her menstrual cycle was normalized and the diagnostically scores of AN indicated non-clinical significance. The multidisciplinary treatment enabled the athlete to return to play despite several years of LEA and AN.
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| 2. |
- Ohlsson, Anna, et al.
(författare)
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Heart Rate Distribution during Training and a Domestic League Game in Swedish Elite Female Soccer Players
- 2015
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Ingår i: Annals of Sports Medicine and Research. - : JSciMed Central. - 2379-0571. ; 2:4
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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