The purpose of this study was to examine weight concerns, dieting, body dissatisfaction as well as eating behavior of German high school athletes and to compare disordered eating behavior of these athletes with regular high school students. Five hundred and seventy-six young athletes of Elite Sports Schools in the German state of Thuringia and a reference group consisting of 291 non-athletes from regular high schools completed a questionnaire regarding eating behavior and attitudes, dietary history, body image and demographics. The Eating Attitude Test was used to measure disordered eating. Athletes did not show a higher frequency of disordered eating than non-athletes. A binary logistic regression analysis revealed that gender and dietary experience, but not group (athletes vs non-athletes), were significant predictors of disordered eating. It can be concluded that dietary experience and female gender proved to be important risk factors of disordered eating. Participation in sports seems to be protective for developing serious eating problems, especially in girls. Potentially, regular monitoring of athletic performance by coaches might be a reason for this finding.

Multipath TCP (MPTCP) extends traditional TCP to enable simultaneous use of multiple connection endpoints at the source and destination. MPTCP has been under active development since its standardization in 2013, and more recently in February 2020, MPTCP was upstreamed to the Linux kernel.In this paper, we provide the first broad analysis of MPTCPv0 in the Internet. We probe the entire IPv4 address space and an IPv6 hitlist to detect MPTCP-enabled systems operational on port 80 and 443. Our scans reveal a steady increase in MPTCPcapable IPs, reaching 9k+ on IPv4 and a few dozen on IPv6. We also discover a significant share of seemingly MPTCP-capable hosts, an artifact of middleboxes mirroring TCP options. We conduct targeted HTTP(S) measurements towards select hosts and find that middleboxes can aggressively impact the perceived quality of applications utilizing MPTCP. Finally, we analyze two complementary traffic traces from CAIDA and MAWI to shed light on the real-world usage of MPTCP. We find that while MPTCP usage has increased by a factor of 20 over the past few years, its traffic share is still quite low.

To develop suitable preventive programs for eating disorders, it is important to examine the prevalence and severity of disturbed eating behaviour in the corresponding risk population as well as to investigate the conditions that might explain their origin and further progression. Based upon this background 736 female and male high school and university students from Eastern and Western parts of Germany were examined. Height and weight were measured objectively. In accordance with the study of Buddeberg-Fischer three groups were defined depending on the total score in the Eating Attitudes Test. 28.5 % of the women and 12.6 % of the men revealed impaired eating behaviour with female high school students being specifically affected (35.3 %). With an increasing impairment, women more often used methods to regulate their weight like diets, restrained eating, or drugs. Participants with disordered eating behaviour were also more likely to show higher scores on the subscales of the Eating Disorders Inventory and a distorted body perception. The feeling of being overweight showed a correlation with the severity of the disturbed eating. With increasing eating problems the correspondence between the real existing BMI and the subjective estimation of the weight decreased significantly. The results of this study clearly demonstrate the high prevalence of disturbed eating behaviour and concerns about weight among female adolescents and young adults. Female high school students should be a special target group for the application of preventive programs. The reported use of drugs in order to lose weight should be discussed more explicitly.