Publications by authors named "Scheer V"

Background: Off-road running is a growing sport with little research investigating injury profiles of female participants. Bone stress injuries (BSIs) are a particularly detrimental injury with little known about their incidence and risk factors in female off-road runners.

Objective: Collate and review the available evidence reporting epidemiological data and risk factors associated with BSI in female off-road runners.

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Background: Several single race events (5 km, 10 km, half-marathon, marathon, ultra-marathon) in different countries and different years have been analyzed in multiple studies, representing the rising interest in endurance-based activity and thus physical health. With focus on participation numbers, performance or sex difference, many single study results were obtained. The running trends in a whole country covering a longer period of time and several race distances are missing so far.

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We aimed to analyze sex differences in time-limited ultramarathon participation, while also identifying trends in participation, age, and performance across different formats of events, from 1990 to 2020. This is an exploratory study, using data obtained from the official event web pages. We downloaded information regarding the year of the event, athletes' year of birth, sex, race event, ranking, and mean running speed (km/h).

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Background: Antarctic expeditions, although supported by scientific knowledge, face various challenges, with little research conducted to explore the physical demands that explorers experience.

Objective: To summarise physiological, psychological, body composition and nutritional changes faced during trek expeditions in the Antarctic's continental portion.

Design: Systematic review.

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Objective: Ultra-marathon running races are held as distance-limited or time-limited events, ranging from 6 h to 10 days. Only a few runners compete in 10-day events, and so far, we have little knowledge about the athletes' origins, performance, and event characteristics. The aim of the present study was to investigate the origin and performance of these runners and the fastest race locations.

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Depression is an important public health issue. In the general adult population, about 6.7% are affected.

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Article Synopsis
  • Ultramarathon running, especially 24-hour races, is becoming increasingly popular, yet there's limited knowledge about the origins of top runners and their fastest race locations.
  • A study utilizing a machine learning model analyzed over 171,000 race records and found that the majority of athletes come from the USA and Europe, with Tunisians showing the fastest average speeds.
  • The study revealed a strong connection between an athlete's country of origin and the race location, with the fastest races occurring in Israel, Romania, and other European and Asian countries; men generally ran faster than women, particularly in age groups 35-49.
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Background: The modern wound dressing is produced to absorb fluid and protect against external contamination. The choice of which wound dressing to apply after surgery is usually based on local tradition. There are various impervious dressings on the market.

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Extensive research has delved into the impact of environmental circumstances on the pacing and performance of professional marathon runners. However, the effects of environmental conditions on the pacing strategies employed by marathon participants in general remain relatively unexplored. This study aimed to examine the potential associations between various environmental factors, encompassing temperature, barometric pressure, humidity, precipitation, sunshine, cloud cover, wind speed, and dew point, and the pacing behavior of men and women.

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Objective: The large body of literature examining the association between parenthood and mortality in the general population contrasts with a lack of studies among older adults with schizophrenia. Identifying potential protective factors of premature death in this population is important to help guide prevention measures. Here, we examined whether all-cause and cause-specific mortality rates significantly differ between older adults with schizophrenia with and without children, during a 5-year follow-up.

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Borderline personality disorder (BPD) and posttraumatic stress disorder (PTSD) share common risk factors, including exposure to traumatic events. We aim to estimate networks of BPD and PTSD to describe the interactions between the symptoms of these 2 disorders and identify bridging symptoms between the 2 diagnoses that may play critical roles in their co-occurrence. We performed a network analysis of data from the second wave of the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC 2004-2005), a nationally representative sample of the US adult population.

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Article Synopsis
  • Antarctic expeditions pose significant physiological challenges, especially regarding sleep, which is vital for athletic performance and recovery; disturbances in sleep can negatively affect health and performance.
  • A study examined the sleep and fatigue patterns of a woman who completed a solo ski journey of 1484.53 km across Antarctica in 70 days, using various questionnaires to assess her sleep quality, fatigue, and recovery throughout the adventure.
  • Results showed she averaged around 4 to 5 hours of sleep daily, with increasing fatigue and muscle soreness as the expedition progressed; despite these challenges, she maintained high performance levels and demonstrated remarkable recovery post-expedition, highlighting the adaptability of female athletes in extreme conditions.*
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The present study intended to determine the nationality of the fastest 100-mile ultra-marathoners and the country/events where the fastest 100-mile races are held. A machine learning model based on the XG Boost algorithm was built to predict the running speed from the athlete's age (Age group), gender (Gender), country of origin (Athlete country) and where the race occurred (Event country). Model explainability tools were then used to investigate how each independent variable influenced the predicted running speed.

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Introduction: Antarctic expeditions present exceptional physiological and mental challenges. Research data are lacking on psychological aspects of such endeavours. The aim of our study is to provide data on changes in mood, well-being, personality traits and personal experiences during an Antarctica crossing.

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Article Synopsis
  • Antarctic expeditions present significant health challenges, including nutritional deficiencies, cold injuries, and severe fatigue.
  • A case study of a 33-year-old female adventurer highlights her experience during a 1484.53 km solo ski expedition in extreme cold (-12 to -50°C) and high winds, where she developed a neck injury and a serious cold injury on her calf.
  • Post-expedition, she faced a 26.7% reduction in body mass, alongside muscle soreness and sleep issues, underscoring the need for further research on medical conditions related to polar exploration.
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Participation in marathons has dramatically increased over the last few years. Marathon running has many proven beneficial effects, especially on cardiovascular health and fitness. Most research has focused on physiologic and pathophysiologic adaptations in connection with endurance exercise.

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The 50-km ultra-marathon is a popular race distance, slightly longer than the classic marathon distance. However, little is known about the country of affiliation and age of the fastest 50-km ultra-marathon runners and where the fastest races are typically held. Therefore, this study aimed to investigate a large dataset of race records for the 50-km distance race to identify the country of affiliation and the age of the fastest runners as well as the locations of the fastest races.

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This study aimed to investigate the trends of finishers in the São Silvestre race in Brazil, taking into account sex, age, and performance levels. A total of 31 ​775 runners (women,  ​= ​13 ​847; men,  ​= ​17 ​928), aged (45.2 ​± ​16.

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Excess mortality observed in people with schizophrenia may persist in later life. The specific causes of increased mortality observed in older adults with schizophrenia and the potential influence of psychotropic medications remain partly unknown. We compared 5-year mortality and its causes of older adults with schizophrenia to bipolar disorder (BD) or major depressive disorder (MDD).

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Background: Ultramarathon running is the most popular ultraendurance competition in terms of the number of races and runners competing annually worldwide; however, no study has compared pacing and performance over a long period.

Objective: This study analyzes the pacing of successful finishers and nonfinishers in multistage ultramarathons worldwide.

Methods: A total of 4079 athletes (men=3288; women=791) competing in 99 multistage ultramarathon events from 1983 to 2021 were analyzed, including the number of participants, age, gender, rank, and running speed of successful finishers.

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Background: Among ultra-endurance runners (UER), the mental, behavioral, and physical demands of training/competition can result in maladaptive outcomes. Mental health issues are common in athletes and can impact psychology, physical health, and performance.

Objective: To synthesize information regarding the incidence/prevalence and factors associated with mental health issues among UER.

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Recent studies showed that female runners reduced the performance gap to male runners in endurance running with increasing age and race distance. However, the investigated samples were generally small. To investigate this further, the present study examined sex differences by age across various race distances (5, 10 km, half-marathon, marathon, and ultra-marathon) using a large dataset of over 1,100,000 race records from Switzerland over two decades (1999-2019).

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Sports performance is the result of a complex interaction between individual and environmental factors. The purpose of this paper is to explain the methods used in the InTrack Project, a cross-sectional and cross-cultural project developed to investigate the variance in the performance of runners from different countries and to understand whether the differences in the performance can be explained by micro-level (athletes characteristics and proximal environment), meso-level (the distal environment that plays a relevant role on the relationships established at micro-level), and the macro-level (environmental features that shape countries characteristics). The sample will be comprised of runners, of both sexes, from four countries.

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Background: Running participation/performance is a complex system. Understanding the variables associated with these behaviors may help to increase population physical activity and improve performance. This study aimed to investigate social and training variables important for running performance using a network approach.

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