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Ultra marathon-induced increase in serum levels of vitamin D metabolites

Ultra-Marathon-Induced Increase in Serum Levels of Vitamin D Metabolites: A Double-Blind Randomized Controlled Trial. While an increasing number of studies occupies the importance of vitamin D for sporting performance, the impact of any kind of movement on the vitamin D metabolism is poorly characterized. We wanted to identify the reactions of some vitamin D metabolites on ultra-marathon runs.A design with repeated measurements has been implemented, in which 27 amateur runners have been divided into two groups: those who received a single dose of vitamin D3 (150'000 IE) for 24 hours before the start of the marathon (150,000 IE) and those (n = 14) which received a placebo. Blood samples were taken for 24 hours immediately after and 24 hours after the barrel.In both groups of runners, the serum levels 25 (OH) D3, 24.25 (OH) 2D3 and 3-EPI-25 (OH) D3 after the ultra-marathon increased significantly by 83%, 63% and 182% respectively. The increase was most pronounced in the vitamin D group.Body mass and fat mass decreased significantly after the barrel in both groups.

Participation and performance at the oldest ultramarathon of the world - the Comrades Marathon

Participation and Performance in the Oldest Ultramarathon-Comrades Marathon 1921-2019 Participation and performance trends were analyzed for limited periods for different ultramarathons. This study examined trends in terms of participation and performance at the oldest ultramarathon in the world, the Comrades Marathon (South Africa), during a century (1921-2019). Data from www.ultra-marathon.org to 100'000 finishers were analyzed using various general linear models.Women made 4.2% of the total sample (n = 4'152), and the first women ran this race in 1978. Before 1965, the number of participants was between 5 and 35 athletes and began to grow exponentially by the mid-90s. In the 1970s, an increase in finishers was observed mainly due to an increase in male athletes in age groups 30-39, 40-49 and 50-59 years. There was a stable running speed for women and men as a whole, but a performance improvement for the annual top 5 women and men.Male runners were faster than female runners in all ages.

Mood changes and cognitive performance before and after a 100 km nocturnal ultramarathon

Changes of Mood and Cognitive Performance before and after a 100 km Nighttime Ultramarathon Run Ultramarathons become an increasingly popular endurance sport.Year after year, the requirements for the skills and the endurance of the athletes rise. Ultramarathons especially burden the psychological functioning of athletes. In this study, relations between participation in a nocturnal ultramarathone and changes in mood and cognitive functions were examined. The study included 20 experienced runners aged 26 to 57 years with experience.There were 18 men and 2 women. The mood states were measured twice, just before the start of the run and shortly after crossing the finish line, using the Polish version of the UMACL UWist Mood Adjective Checklist of Mathews, Chamberlain and Jones. To assess the cognitive functions, the Stroop Color and Word Test and the Subtest “Prevralation Span” of the Changer Adult Intelligence Scale were used.

What variables influence the mileage?

Predictive Performance Models in Long-Distance Runners: A Narrative Review Physiological variables such as maximum oxygen uptake (VO2max), the speed at maximum oxygen uptake (VVO2max), the running economy and changes in the lactate level are considered as main factors for the performance for long-distance races. The aim of this review was to introduce the mathematical models available in the literature to estimate performance at the competitions 5'000 m, 10,000 m, half marathon and marathon. Eighty-eight articles have been identified, selections based on the inclusion criteria and the full text of the articles received. The articles were reviewed and categorized according to demographic, anthropometric, exercise physiology and field test variables. From 1983 to this day, a total of 58 studies were included, which were divided into the following categories: 12 to 5'000 m, 13 to 10'000 m, 12 on half marathon and 21 on Marathon. A total of 136 independent variables in connection with the performance in long-distance races were taken into account, of which 43.4% of variables derived from the evaluation of the aerobic metabolism, 26.5% variables associated with the training load, and 20.6% anthropometric variables, body composition and somatotypic components. The narrowest-associated variables in the predictive models for semi- and full marathon specialties were the variables obtained from the laboratory tests (Vo2max, VVO2max), training variables (training pace, training load) and anthropometric variables (fatty mass, skin folds). In predicting the time for long-distance races on the basis of field tests, there is a big gap.Physiological performance assessments are almost exclusively for shorter specialties (5'000 m and 10,000 m). The predictor variables of the half-marathon are mainly anthropometric, but with moderate determination coefficients.

Talight endurance charges without a lot of sleep

Extreme sports performance for more than a week with severely fractured sleep Highly interrupted sleep is usually presented negative, but examinations in extreme sports show that people can maintain their performance with a minimum of sleep. Two cases of long-lasting extreme sports are shown that strongly interrupted sleep does not necessarily lead to a deterioration in physical and cognitive performance. During a world record experiment in long-term skiing, a continuous polysomnography was carried out on a 34-year skier for 11 days and nights, and a 32-year cyclist was examined for sleeping and activity protocols during the Race Across America for 8.5 days. The skier slept in 15-16 nap with a daily average of 6 hours, consisting of 77% in sleep 1 and 2, 11% at Stage 3 and 13% in Stadium Rem.The cyclist slept a total of 7 hours and 52 minutes in 8.5 days, divided into 11 short naps and 6 sleeping phases. The average duration of the nicker was 8.8 minutes and sleep 64.2 minutes.

Too much workout can be unhealthy

Training for Longevity: The Reverse J-Curve for Exercise A wealth of scientific literature occupies the unique therapeutic benefits of quality of life, cardiovascular health and longevity. Consequently, many have assumed that more movement is always better.However, chronic excessive endurance training can adversely affect cardiovascular health. Ultra races can cause acute myocardial damage, which is evidenced by increasing the troponin and the natriuretic peptide in the brain.In addition, a sudden cardiac arrest at marathons and triathlons occurs more frequently than shorter races. Experienced endurance athletes often show an abnormal heart rate with an increased risk of myocardial fibrosis and coronary conciliations.Chronic excessive training has consistently associated with increased risk for atrial fibrillation and a certain attenuation of the longevity advantages. The optimal training dose remains unknown and is probably different between the individual persons.

Inter-individual different reactions to continuous and interval

Inter-Individual Different Responses to Continuous and Interval Training in Recreational Middle-Aged Women Runners A crucial topic in sports is the determination of interindividual differences in response to the training that would enable to create individual timetables before workout and improve the runner’s performance. We wanted to analyze the heterogeneity of individual reactions to two half marathon training programs that differ mid-ages in running volume and intensity. 20 women performed either a 12-week continuous training with moderate intensity or interval training with high intensity.They were tested before and after training with maximum stress tests in the laboratory (Vo2max) and in the field (time to exhaustion and endurance run). All women participated in the same half marathon and their conclusion times were compared to their previous times.Although the improvements of mean final times were not significant, a continuous intensity of average intensity resulted in greater reduction in the final times, with more women (70%) improved compared to their previous times than at an interval of high intensity. The laboratory tests showed more differences in the highly intensive interval group, while both groups showed homogeneous significant increases of time to exhaustion.Both in the short interval series as well as in endurance run, the interval with high intensity resulted in better individual improvements with a higher percentage of responsters compared to continuous intervals of medium intensity (100% compared to 50% in the short series and 78% compared to 38% in endurance run). In summary, a variability of the interindividual reactions was observed both after a continuous interval middle and after a high-intensity interval, with some participants showed improvements (responders), while others showed no (non-responders) in the different performance parameters, which the idea of individualizationconfirmed.To optimize performance, a training concept is required. The whole study can be found under https://www.frontiersin.org/articles/10.3389/fhys.2020.579835/full

The optimal system for runners: comparison between hand-held water bottles

The Optimal Weight Carriage System for Runners: Comparison Between Handheld Water Bottles, Waist Belts, and Backpacks In endurance sports, where liquid and nutrition is not always available, transportation of water and food under stress is essential. In order to compare the running economy and the physiological requirements of different systems, 12 recreational runners completed after a first test four running tests with a duration of 60 minutes each for individual running speeds (mean running speed 9.5 ± 1.1 km / h) on a treadmill. In a hand-held water bottle, a hip belt or a backpack, either no weight (control) or weight of 1.0 kg was transported. The running economy was evaluated on the basis of energy consumption, oxygen consumption, heart rate, and perceived load.Energy consumption, oxygen consumption, heart rate and perceived stress increased over time, but no significant differences between the systems were detected. Wearing a hand-held water bottle, a hip belt or a backpack with a weight of 1.0 kg during a 60-minute run showed similar physiological changes.

Regular running speed leads to faster end times at the UTMB - an analysis

Even Pacing Is Associated with Faster Finishing Times in Ultramarathon Distance Trail Running—The “Ultra-Trail du Mont Blanc” 2008–2019 In recent years, more and more investigations have been carried out to analyze the effects of gender, performance level and age on pacing in different course disciplines.However, little is known about the impact of these factors on pacing in the trail running in the ultramarathon area. This study examined the impact of age, gender and performance level on the pacing at UTMB (Ultra-Trail du Mont Blanc) and aimed to review earlier results obtained in research on other running disciplines and other ultramarathon races. The data of the UTMB from 2008 to 2019 for 13,829 racing results (12,681 men and 1,148 women) were analyzed. The study showed that a regular running speed (even pacing) correlated positively with the running speed.A uniform pacing throughout the UTMB correlated with faster end times. The average running speed depended significantly from the gender and the age group.In the analysis of the five best athletes in every age group, gender and age group had significant impact on pacing. The fastest women were older than the fastest men, and the fastest men were faster than the fastest women.Women had a higher variation of running speed than men.In male participants, a younger age can be beneficial for a successful completion of the UTMB.