Liquid and food intake in an ultramarathon

Real-Time Observations of Food and Fluid Timing During a 120 km Ultramarathon In this case study, it was about using real-time observations to investigate the timing of ultramarathon runners in food intake and fluid intake per 15 km and per hour and the entire body weight loss due to dehydration. The study included five male ultramarathon runners who were observed during a 120 km long race. The members of the research team followed on a bicycle and continuously watched their food intake with cameras. The hourly carbohydrate intake was between 22.1 and 62.6 g / h and the fluid intake varied between 260 and 603 ml / h. These numbers remained relatively stable during the ultra-endurance marathon. The runners took an average of 3-6 times a 15 km of food and liquid. The runners reached a higher total carbohydrate consumption in the second half of the race, but no higher fluid intake. Energy desire contributed most to the entire average carbohydrate recording. The weight after the race was 3.6 ± 2.3% lower than the weight before the race, resulting in a non-significant but practical relevant difference.

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Knee pain in cyclists

Potential factors associated with knee pain in cyclists: a systematic review The possible factors associated with overload damage and pain in cyclists supported by scientific evidence are still unclear. The present study aimed to determine the most important factors in connection with the overuse of knee pain and / or injury to cyclists on the basis of a systematic search for the latest findings. In the search, a possible mechanism in connection with knee pain or injuries was investigated, which could be used in clinical practice. Databases were searched and studies were included if presented results from original studies. They should preferably include, but not limited to, leisure and / or competitive athletes with or without knee pain. The quality of the item was evaluated.Eleven articles were considered for a full text test. The studies generally included the evaluation of biomechanical results in connection with knee pain in cyclists. Overall, the studies showed that cyclists with knee pain have greater knee adcreation and larger dorsalflexion of the ankle and differences in activation for Hamstring and QuadricePs muscles. Unclear results were observed for kneemoments, and no differences were observed for knee fluid angles, tibiofemoral and patellofemoral forces. It is important to mention that various types of knee pain were mixed in most studies, focusing on two studies on anterior-associated pain. Cyclists with excessive pain or injuries on the knees showed increased media projection of their knees and a changed activation of Vastus Medialis and Vastus Lateralis.

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When do the runners specialize in the marathon track?

Marathon Specialization in Elites: A Head Start for Africans This study pursued the evaluation of the differences in event-specific specialization between African and non-frican male marathon runners based on age, performance and career length. For this purpose, the top 90 of the African marathon runners from 2001 to 2015 with the top 90 of non-African marathon runners from the same period over various markers in terms of age, performance and career length compared. It turned out that African marathon runners specialize in excellence and retreat from competitive sports as non-African marathon runners. In addition, African marathon runners were faster in these career periods and in half marathon performance faster. There was no significant difference in the number of marathons between the groups, but African marathon runners ran more frequently than non-African marathon runners. The half marathon performance correlated positively with the marathon performance. Marathon runners specializing in young years showed significantly higher suggestions rates than those specializing in older age groups.

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Age and pacing in cross-country skiing

The effect of aging on pacing strategies of cross-country skiers and the role of performance level The participation of Masterathlets in training and competition has increased in recent decades. However, there is still little known whether these athletes differ in performance aspects such as the pacing of their younger colleagues. We have studied the combined effect of age and performance (competition time) to the pace on the vassalauf. We analyzed all around 80,000 finishers from 2012 to 2017 after their competition time in 10 groups.

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All details about Ultramarathon

Physiology and pathophysiology in ultra-marathon running We have reviewed the scientific literature on Ultramarathon and creates a great review article. We summarize the findings of the literature with regard to the physiology and pathophysiology of the ultramarathon. The number of ultramarathons and the number of official finishers has risen particularly strong in recent decades, due to the increased number of women and age group runners. A typical ultra raker is male, married, well trained and about 45 years old.Female Ultralaufen today make around 20% of the total number of finishers. Ultralaufen are older than marathon runners and have a bigger weekly training volume, but they run slower as a marathon runner in training. Previous experience (number of placements in ultramarathons and fast personal best marathon period) is the most important factor influencing a successful ultramarathon followed by specific anthropometric peculiarities (low body mass, deep BMI and low body fat) and training (high running speed during exercise). Women are slower than men, but the gender difference in performance in recent years dropped to about 10-20% depending on the length of the ultramarathon. The fastest times in the ultramarathon are usually reached at the age of 35-45 years or older for women and men. It seems that the age of peak performance increases with increasing RenDistanz or duration of the race. An ultramarathon leads to an energy deficit that leads to a reduction of body fat and skeletal muscle. An ultramarathone can lead, in combination with other risk factors such as extreme weather conditions (heat or cold) or the country in which the race takes place, to a stress-associated hyponatremia. An ultramarathon can also lead to changes in biomarkers who show a pathological process for specific organs or organ systems, such as skeletal muscles, heart, liver, kidney, immune system and endocrine system. These changes are usually temporary, depending on intensity and duration of performance, usually normalize after the race within a few days. In longer ultramarathons, up to 50-60% of the participants complain about muscular skeletal problems. The most common injuries in ultra skirters relate to the lower extremity such as ankle and knees. An ultramarathon leads to an increase in creatine kinase at values of 100,000-200,000 U / L depending on the fitness level of the athlete and length of the race. In addition, an ultramarathon can lead to changes in the heart, such as changes in heart biomarkers, ECG and echocardiography. Ultralauf often suffer from digestive problems and gastrointestinal bleeding after an ultramarathon are not unusual. The liver enzymes can increase significantly during an ultramarathon.An ultramarathon often leads to a temporary restriction of renal function.

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Stress of the heart at long cycling

2706 km cycling in two weeks: effects on cardiac function in six elderly male athletes Sport has a non-underestimated influence on the heart.A Danish group has studied six older athletes who have completed around 2700 radikilometers for 14 days. It turned out that the left ventricle increased to size.In addition, there was a temporary increase in cardiac biomarkers (troponin T, creatine kinase-myocardial gang and N-terminal pro-brain-natriuretic peptide). The plasma concentrations of cholesterol and lipoprotein cholesterol were significantly lower after workout. The systolic blood pressure was unchanged, but the diastolic pressure was significantly lower after workout than at the beginning of the study. Important are the favorable reduction of the blood fats and the reduction of diastolic blood pressure. The study can be found under https://pubmed.ncbi.nlm.nih.gov/29770745/

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The central nervous system as a regulator

Exercise, Obesity and CNS Control of Metabolic Homeostasis: A Review The American John Kelly Smith has thought about the way in which the central nervous system regulates metabolic homeostasis in normal weight and obese rodents and humans. His work is a very complex overview of the homeostatic contributions of neurons in the hypothalamus, the midbrain and the limbic structures, the PONS and the Area PostRema, the Nucleus Tractus Solitarius and the Vagus Core, as well as details of how these brain regions react to circulating orexigen hormonesGhrelin, and anorexigene hormones such as glucagon-like peptide 1 and leptin. The work gives an insight on how high-intensive training can improve homeostatic control in overweight and obese patients.

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Performance trends at the Boston Marathon

Boston Marathon is April 16. Why are Americans slower than 42 years ago? The Boston Marathon is the oldest marathon in the world. In an interesting article philosophies the author why the Americans were not faster on this run. He goes through the milestones of history and mentions the East African runners.

We can answer His questions soon, we have worked up the historical numbers of this run, the work is written and should be published soon. But first, the article by Bob Prichard is under https://www.linkedin.com/puls/boston-marathon-april-16-why-americans-Slower-than-42-bob-prichard/?p

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