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Zur Vermittlung und intergenerationale "Vererbung" von Sportengagements in der Herkunftsfamilie
(2005)
Treue zum Stil
(2005)
Objectives: To examine the development of volition in young athletes attending an elite sport school. Because volition is important for realising long and intense training loads during the course of an athletic career the question is if the context of a school for young elite athletes promotes its development. Design: Two studies are described, one with a cross-sectional (study 1) and another with a longitudinal design (study 2). Methods: In the cross-sectional study the volitional skills of 327 students attending a school for young elite athletes were analysed according to age and living situation (at home/in the boarding school). In the longitudinal study the development of volition of 63 young elite athletes was compared to that of 122 non-athletic students attending a regular school. In both studies volition is measured with the Volitional Components Questionnaire (VCQ II). On the basis of a factor analysis conducted in study 1, two factors could be identified, namely self-optimisation, which includes skills needed to achieve goals, and self- impediment, which includes skills addressed in stress situations. Results: Study 1 suggests that self-impediment shows a development and that volitional skills develop more favourably in athletes living in the boarding school. These results are confirmed by the longitudinal study. The second study additionally shows that volitional skills concerning self- optimisation develop more favourably in the young elite athletes when compared to regular students. Conclusion: Only advantages concerning the development of volition in students attending a school for young elite athletes were found. (c) 2004 Elsevier Ltd. All rights reserved
Sportkarrieren Jugendlicher
(2005)
Problems: Boxer that take part on contests regularly are characterized by high strains on the locomotor system. Especially the area of shoulder girdle and neck can be overused by the fighting posture and standard techniques, that are often associated with non-physiological patterns. Methods: Of 11 young boxers (age 14.6 +/- 0.6 years; 7.3 +/- 0.6 training units per week) and a control group (CG) of 52 male pupils (age 15.4 +/- 0.4 years) the static of head, shoulder girdle, and pelvis was detected by somatoscopy. Additionally, cyclical rotations of the cervical spine were measured using the 3-d-motion recording system CMS70 (Zebris, Germany) and the active range of motion was analysed. Results: In comparison to the CG, head and shoulder of the boxers were ventralised more often (p<0.01). Furthermore, highly significant group differences in the bilateral position of the shoulder heights and the iliac crests were detected in the frontal plane. On average, the active maximal rotation of the boxers was decreased by 17.8 degrees (p = 0.006; d = 0.800). Discussion: Our study was able to detect significant differences in the analysed functional parameters of the locomotor system that may be explained by boxing specific strains and which are prerequisites of optimal performance. As long-term pathologic effects can not be excluded, adequate compensational exercises should be integrated in the training