The problem of nausea during an ultramarathon

Nausea is associated with endotoxemia during a 161-km ultramarathon. During an ultramarathon, many runners suffer from digestive problems such as nausea. An American group examined possible relationships between digestive problems and various laboratory parameters. Amazingly, it was found that parameters of endotoxemia (= poisoning caused by the decay of bacteria are associated with digestive problems with digestion problems with the release of endotoxins. This new aspect can be found under https://pubmed.ncbi.nlm.nih.gov/26707127/

Running and immune system

Salivary Immuno Factors, Cortisol and Testosterone Responses in Athletes of a Competitive 5,000 m Race. During a physical stress, there is a passable immunosuppression, there is an interaction between endocrine and immunological systems. Chinese researchers have examined in male and female 5'000 m runners what happens with specific laboratory parameters of the endocrine and immunological system. Iga in saliva was in the women as during the run higher than in men.The testosterone took off in men after the barrel, while women do not.

Kidney function in Ultralauf

Does Acute Kidney Injury From an Ultramarathon Increase the Risk for Greater Subsequent Injury? An American group has studied 627 runners in a 100-mile runway whether damage to renal function increases by an ultra-rose risk for further kidney problems.

It showed that a slight kidney damage in ultra skiers is customary but this is not a problem for further runs. The very important result can be found under https://pubmed.ncbi.nlm.nih.gov/26657822/

Sodium household during a marathon

Sweat sodium loss influences serum sodium concentration in a marathon A Spanish group examined, which has the loss of sodium with the welding for an influence on the sodium concentration in the blood. 51 runners were divided into different groups based on their welding.It was a connection between sodium loss in the welding and sodium in the blood.

However, the runners with the largest sodium loss in the sweat did not develop hyponatemia. All numbers can be found under https://pubmed.ncbi.nlm.nih.gov/26661748/

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Sex differences in ultra skills

Sex Differences in Participation, Performance and the Age of Ultramarathon Runners An American group has studied how the difference between men and women in ultra-based developed in terms of ranking and participation.They examined 20 races from 45 to 160 km. The men were faster than the women.The difference was the deepest over 100 km and the greatest over 45-50 km.The fastest men were younger than the fastest women. The difference between the sexes rose with ranking, was the deepest in the winners and higher at the runners in the 10th place.

What happens for 24 hours cross-country skiing?

Clinical and Laboratory Responses of Cross-Country Skiing for a 24-H World Record: Case Report A Finnish group has studied what happens in a ski runner who is traveling for 24 hours at temperatures from -24 ° C to -5 ° C. The athlete reached 406 km and after the burden there was a significant increase in myoglobin, CK, probnp but no increase in troponin T or Tropinin I. After the load, the size of the left ventricle decreased by around 5%.It also came to an increase of parameters of liver and renal function as well as CRP and leukocytes.

What happens during an Ultraman?

Fluid retention, muscle damage, and altered body composition at the Ultraman triathlon An American group has studied what happens in triathlets at the ‘Ultraman Florida’ with regard to body composition. For 18 athletes, parameters of the body construction, liquid balance and laboratory values were charged.The race led to a decrease in body weight, body fat, an increase in body water while the fat-free mass remained unchanged.

It came to an increase in the CK, the CRP, the aldosterone and cortisol as well as a decrease in the testosterone. The results of this study can be found under https://pubmed.ncbi.nlm.nih.gov/26560107/

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24-hour world record in cycling

Pacing in a self-paced world record attempt in 24-h road cycling The extruder of Christoph Strasser has set up this spring with 896.173 km a new world record over 24 hours cycling.

He has recorded his lap times as well as watts continuously and we have now evaluated these numbers. During the 24 hours he drove at an average speed of 37.34 km / h and a mean wattage of 250.2 W. Speed and watts took linearly during the 24 hours.Ambient temperature and wind speed showed an influence on the speed. The whole evaluation of the record can be found under https://springerplus.springeropen.com/articles/10.1186/s40064-015-1445-1

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Swelling of lower extremity and muscle contraction

The increase in hydric volume is associated to contractile impairment in the calf after the world’s most extreme mountain ultra‑marathon In ultra-curls, it is known that it comes to an inflammatory reaction, muscle damage, reduced performance and swelling of lower extremity. A recent study on an ultramarathon examined a possible relationship between swelling of lower extremity and power loss.

It showed an increase in extracellular water, an increase in the scope of the calf and a connection between the swelling of the calf with a reduced contractility of the calf muscles. The very insightful work can be found under https://extremephysiolmed.biomedcentral.com/articles/10.1186/s13728-015-0037-6

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