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  • Author: Jens Kleinert x
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Svenja A. Wolf, Mark A. Eys, Pamela Sadler and Jens Kleinert

Athletes’ precompetitive appraisal is important because it determines emotions, which may impact performance. When part of a team, athletes perform their appraisal within a social context, and in this study we examined whether perceived team cohesion, as a characteristic of this context, related to appraisal. We asked 386 male and female intercollegiate team-sport athletes to respond to measures of cohesion and precompetitive appraisal before an in-season game. For males and females, across all teams, (a) an appraisal of increased competition importance was predicted by perceptions of higher task cohesion (individual level), better previous team performance, and a weaker opponent (team level) and (b) an appraisal of more positive prospects for coping with competitive demands was predicted by higher individual attractions to the group (individual level). Consequently, athletes who perceive their team as more cohesive likely appraise the pending competition as a challenge, which would benefit both emotions and performance.

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Johanna Belz, Jens Kleinert, Jeannine Ohlert, Thea Rau and Marc Allroggen

Adolescence is a vulnerable period for the development of depression. Research on depression in athletes including adolescent athletes, however, is scarce. The purpose of the present study was to assess the risk for depression depending on the athletes’ age, gender, and performance level. Data were collected from 1,799 German national and state team athletes. The PHQ-2 and the WHO-5 were administered to assess the athletes’ risk for depression and current state of psychological well-being. Overall, 13% of the athletes were screened positive for depression and 10% for impaired well-being. Adolescents, females and athletes of junior national teams showed a higher risk for depression and/or lower well-being than other subgroups. The finding that adolescent athletes are more vulnerable to suffer from depressive symptoms than adult athletes mirrors finding in the general population. Screening tools for depression should be followed up by clinical expert interviews to provide an external criterion for the obtained results.

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Hans Braun, Karsten Koehler, Hans Geyer, Jens Kleinert, Joachim Mester and Wilhelm Schänzer

Little is known about the prevalence and motives of supplement use among elite young athletes who compete on national and international levels. Therefore, the current survey was performed to assess information regarding the past and present use of dietary supplements among 164 elite young athletes (16.6 ± 3.0 years of age). A 5-page questionnaire was designed to assess their past and present (last 4 weeks) use of vitamins, minerals, carbohydrate, protein, and fat supplements; sport drinks; and other ergogenic aids. Furthermore, information about motives, sources of advice, supplement sources, and supplement contamination was assessed. Eighty percent of all athletes reported using at least 1 supplement, and the prevalence of use was significantly higher in older athletes (p < .05). Among supplement users, minerals, vitamins, sport drinks, energy drinks, and carbohydrates were most frequently consumed. Only a minority of the athletes declared that they used protein/amino acids, creatine, or other ergogenic aids. Major motives for supplement use were health related, whereas performance enhancement and recommendations by others were less frequently reported. Supplements were mainly obtained from parents or by athletes themselves and were mostly purchased in pharmacies, supermarkets, and health-food stores. Among all athletes, only 36% were aware of the problem of supplement contamination. The survey shows that supplement use is common and widespread among German elite young athletes. This stands in strong contrast to recommendations by leading sport organizations against supplement use by underage athletes.