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Mortality of seemingly healthy farmed Atlantic salmon is a large problem in Norwegian aquaculture, and has been linked to infectious and noninfectious cardiovascular diseases. In this study, an event of sudden mortality of seemingly healthy farmed salmon during the winter period in northern Norway is reported. The experimental fish reared in net-pens were fed two dietary treatments; control and test experimental diets in duplicates. An increased mortality of 6% and 10% was only observed within the two net-pens receiving the test diets. The moribund fish had significantly higher lipid content in the liver, altered liver fatty acid composition, and increased levels of alanine aminotransferase and alkaline phosphatase in the blood plasma compared to non-dying fish. Instant and significant reduction in mortality was observed when the fish fed the test diet were starved. The observed mortality was associated with dietary and environmental changes. Possible mechanism for the increased mortality is discussed.

Following the report by the Wuhan Municipal Health Commission about a pneumonia case of unknown cause observed in a patient on 12 December 2019, initial news foreboding a clinical crisis surfaced (...

Compared to traditional athletes and PE students, self-organized lifestyle sport practitioners usually have no podiums to reach or grades to earn. They have no authorized instructor available, but ...

Jan H Rosenvinge,1 Jorunn Sundgot-Borgen,2 Gunn Pettersen,3 Marianne Martinsen,4 Annett Victoria Stornæs,2 Anne Marte Pensgaard5 1Department of Psychology, Faculty of Health Sciences, UiT – The Arctic University of Norway, Tromsø, Norway; 2Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway; 3Department of Health and Caring Sciences, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway; 4Department of Mathematics, Natural Sciences, and Physical Education, Inland Norway University of Applied Sciences, Hamar, Norway; 5Department of Coaching and Psychology, Norwegian School of Sports Science, Oslo, Norway Introduction: Psychological distress is increasing among adolescents and clusters with other mental health problems such as eating problems. The aim of this study was to investigate the prevalence of psychological distress among young elite athletes and age-matched controls and whether prevalence figures may be attributed to perfectionism and eating problems. Methods: First-year athletes from all Norwegian elite sport high schools (n=711) and 500 ­students from randomly selected ordinary high schools were eligible for this cross-sectional study. In total, 611 athletes and 355 student controls provided self-report data about psychological distress, perfectionism, and eating problems (ie, body dissatisfaction and a drive for thinness), as well as their physical training/activity. Results: A significantly higher proportion of controls scored above the cutoff point for marked psychological distress. Physical activity above the recommended levels for this age group predicted psychological distress among the controls, while the opposite was found in the student elite athlete sample. In both samples, perfectionistic concerns, ie, concern over mistakes, predicted overall psychological distress. However, among elite athletes, perfectionistic concerns were particularly associated with clinically significant psychological distress. Moreover, the impact of eating problems was negligible. Conclusion: Results from this study highlight the need to target the maladaptive perfectionistic concerns to prevent psychological distress among young athletes as well as among their age-matched nonathlete counterparts. Keywords: psychological distress, competitive athletes, perfectionism

This study aimed to evaluate whether an individualised sprint-training program was more effective in improving sprint performance in elite team-sport players compared to a generalised sprint-training program. Seventeen elite female handball players (23 ± 3 y, 177 ± 7 cm, 73 ± 6 kg) performed two weekly sprint training sessions over eight weeks in addition to their regular handball practice. An individualised training group (ITG, n = 9) performed a targeted sprint-training program based on their horizontal force-velocity profile from the pre-training test. Within ITG, players displaying the lowest, highest and mid-level force-velocity slope values relative to body mass were assigned to a resisted, an assisted or a mixed sprint-training program (resisted sprinting in the first half and assisted sprinting in the second half of the intervention period), respectively. A control group (CG, n = 8) performed a generalised sprint-training program. Both groups improved 30-m sprint performance by ~1% (small effect) and maximal velocity sprinting by ~2% (moderate effect). Trivial or small effect magnitudes were observed for mechanical outputs related to horizontal force- or power production. All between-group differences were trivial. In conclusion, individualised sprint-training was no more effective in improving sprint performance than a generalised sprint-training program.

Recently parental involvement in youth sport has intensified, challenging the understanding of youth sports as an arena where adolescents can develop their identity and autonomy. On this background, our study explores how adolescents understand and negotiate their parents’ involvement in sport and how they define ideal and undesirable forms of parental involvement. Our empirical setting is Norway, and we draw on data from 16 focus group interviews among 13–14-year-olds (n = 92) recruited from two lower secondary schools. The analysis shows that young people distinguish between different aspects of the sport activity when defining ideal and undesirable forms of parental involvement. When discussing sport as a healthy activity necessary for physical and social development, the young people interviewed approve of parents’ role in regulating and encouraging participation. When considering the athletic aspects and peer sociability, however, they see parental involvement as mostly undesirable. The analysis also shows that the adolescents generally describe their parents as attentive to the boundaries their children draw for them about levels and types of involvement. Therefore, young people should be seen not only as subjected to parental involvement but also as active co-constructors of valid parental roles in and beyond the sporting arena.

The purpose of this study was to examine links between public status and performance in a real-world, high-pressure sport task. It was believed that high public status could negatively affect performance through added performance pressure. Video analyses were conducted of all penalty shootouts ever held in three major soccer tournaments (n = 366 kicks) and public status was derived from prestigious international awards (e.g., “FIFA World Player of the year”). The results showed that players with high current status performed worse and seemed to engage more in certain escapist self-regulatory behaviors than players with future status. Some of these performance drops may be accounted for by misdirected self-regulation (particularly low response time), but only small multivariate effects were found.

In this article, we explain and reflect critically upon the athlete whereabouts reporting system in top-level sports initiated by the World Anti-Doping Agency (WADA). This system makes it compulsor...

Some sociologists have argued that sport is a male-dominated institution and sexist culture in which female athletes experience various forms of discrimination, including sexual harassment from coaches and male athletes. Some research does indicate that female athletes suffer higher rates of sexual victimization from authority figures in sport than their nonathletic counterparts in education and the workplace. In contrast, researchers have also speculated that athletic participation can protect female athletes from sexual victimization through a variety of social-psychological mechanisms such as team membership, physical strength, and self-confidence. This paper reports on the first descriptive analysis to test the “sport protection hypothesis” among both female and male athletes, using cross-tabulation secondary analyses of data from the National College Health Risk Behavior Survey, conducted in 1995 by the U.S. Centers for Disease Control and Prevention (N=4814). USA college students of traditional undergraduate age (aged 18-24) were included in the sample (N=2903). Some limited support for the protection hypothesis was found, and student athletes were significantly less likely to report sexual victimization during their late high school and early college years than their nonathletic counterparts. A gender gap in the pattern of sexual victimization also appeared between males and females across all student age groups, with females experiencing more sexual victimization than males. However, no significant gender gap was found among athletes. The results are discussed in relation to previous studies of campus athletes and to college prevention policy.